/* ==========================================================================
   TiFinity Oral Care
   ========================================================================== */
@font-face{font-family:"Inter";src:url(../assets/fonts/inter.woff2) format("woff2");font-weight:300 700;font-display:swap}
@font-face{font-family:"Sora";src:url(../assets/fonts/sora.woff2) format("woff2");font-weight:300 800;font-display:swap}

:root{
  --ink:#070c18;--ink-2:#0d1527;--ink-3:#15203a;
  --text:#0b1220;--muted:#5a6578;--muted-light:#9aa6b8;
  --paper:#f4f6fa;--paper-2:#e9edf3;--white:#fff;
  --ti-1:#f3f6f9;--ti-2:#c5cfdb;--ti-3:#8d99aa;
  --mint:#2ee6c5;--mint-d:#0c9f86;--aqua:#38bdf8;--gum:#ff5d7a;--gum-d:#e23a5c;
  --line-d:rgba(255,255,255,.09);--line-l:rgba(11,18,32,.09);
  --radius:22px;--radius-s:14px;
  --shadow:0 20px 50px -20px rgba(7,12,24,.35);
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --display:"Sora","Inter",system-ui,sans-serif;
  --wrap:1200px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:80px}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--paper);line-height:1.6;font-size:clamp(16px,1.05vw,17.5px);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{font-family:var(--display);line-height:1.1;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.5rem,6vw,4.8rem);font-weight:700}
h2{font-size:clamp(2rem,4.2vw,3.3rem);font-weight:700}
h3{font-size:clamp(1.15rem,1.6vw,1.35rem);font-weight:600}
p{margin:0 0 1em}
.wrap{width:min(100% - 2.5rem,var(--wrap));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:1rem;top:-3rem;background:var(--mint);color:var(--ink);padding:.6rem 1rem;border-radius:8px;z-index:100;font-weight:600}
.skip:focus{top:1rem}
:focus-visible{outline:3px solid var(--mint);outline-offset:3px;border-radius:6px}

/* ---------- Utilities ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:.6rem;font-size:.78rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--mint-d);margin-bottom:1.1rem}
.eyebrow::before{content:"";width:28px;height:2px;background:currentColor;border-radius:2px}
.dark .eyebrow{color:var(--mint)}
.lead{font-size:clamp(1.08rem,1.4vw,1.25rem);color:var(--muted);max-width:60ch}
.dark .lead{color:var(--muted-light)}
.metal{background:linear-gradient(100deg,#fff 0%,#c9d3df 22%,#fff 40%,#8d99aa 62%,#eef2f6 80%,#b7c2cf 100%);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 9s linear infinite}
.mint{color:var(--mint)}
@keyframes shimmer{to{background-position:-220% 0}}
.center{text-align:center}
.center .lead{margin-inline:auto}
.section{padding:clamp(5rem,10vw,8.5rem) 0;position:relative}
.dark{background:var(--ink);color:#e9eef6}
.section-head{max-width:760px;margin-bottom:clamp(2.5rem,5vw,4rem)}
.section-head.center{margin-inline:auto}

/* ---------- Buttons ---------- */
.btn{--bg:var(--mint);--fg:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:.55rem;padding:.95rem 1.5rem;border-radius:999px;border:0;background:var(--bg);color:var(--fg);font-weight:600;text-decoration:none;font-size:1rem;line-height:1;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,color .25s;box-shadow:0 10px 30px -10px rgba(46,230,197,.6);white-space:nowrap}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 36px -12px rgba(46,230,197,.75)}
.btn svg{width:18px;height:18px;transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn.ghost{--bg:transparent;--fg:currentColor;box-shadow:inset 0 0 0 1.5px currentColor}
.btn.ghost:hover{box-shadow:inset 0 0 0 1.5px var(--mint);color:var(--mint)}
.btn.dark-btn{--bg:var(--ink);--fg:#fff;box-shadow:0 10px 30px -12px rgba(7,12,24,.6)}
.btn.small{padding:.7rem 1.15rem;font-size:.92rem}

/* ---------- Header ---------- */
.site-header{position:fixed;inset:0 0 auto;z-index:50;transition:background .35s,box-shadow .35s,color .35s;color:#fff}
.site-header.scrolled{background:rgba(7,12,24,.92);backdrop-filter:saturate(160%) blur(16px);-webkit-backdrop-filter:saturate(160%) blur(16px);box-shadow:0 1px 0 var(--line-d)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px;gap:1rem}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;font-family:var(--display);font-weight:700;font-size:1.22rem;letter-spacing:-.01em;line-height:1}
.brand img{width:38px;height:38px}
.brand small{display:block;font-family:var(--font);font-weight:500;font-size:.6rem;letter-spacing:.22em;text-transform:uppercase;opacity:.6;margin-top:4px}
.nav-links{display:flex;align-items:center;gap:.3rem;list-style:none;margin:0;padding:0}
.nav-links a{display:block;padding:.55rem .85rem;border-radius:999px;text-decoration:none;font-size:.95rem;font-weight:500;opacity:.82;transition:opacity .2s,background .2s}
.nav-links a:hover,.nav-links a.active{opacity:1;background:rgba(255,255,255,.09)}
.nav-cta{display:flex;align-items:center;gap:.6rem}
.menu-btn{display:none;width:46px;height:46px;border-radius:50%;border:0;background:rgba(255,255,255,.08);color:inherit;place-items:center}
.menu-btn span{display:block;width:20px;height:2px;background:currentColor;border-radius:2px;position:relative;transition:.3s}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor;border-radius:2px;transition:.3s var(--ease)}
.menu-btn span::before{top:-6px}.menu-btn span::after{top:6px}
.menu-open .menu-btn span{background:transparent}
.menu-open .menu-btn span::before{top:0;transform:rotate(45deg)}
.menu-open .menu-btn span::after{top:0;transform:rotate(-45deg)}
@media (max-width:960px){
  .menu-btn{display:grid}
  .nav-links{position:fixed;inset:76px 0 auto;flex-direction:column;align-items:stretch;gap:0;padding:1rem 1.25rem 2rem;background:rgba(7,12,24,.98);color:#fff;transform:translateY(-12px);opacity:0;pointer-events:none;visibility:hidden;transition:.3s var(--ease);height:calc(100dvh - 76px)}
  .nav-links a{font-size:1.4rem;font-family:var(--display);padding:1rem .5rem;border-bottom:1px solid var(--line-d);border-radius:0;opacity:1}
  .menu-open .nav-links{transform:none;opacity:1;pointer-events:auto;visibility:visible}
  .menu-open .site-header{background:rgba(7,12,24,.98)}
  .nav-cta .btn{display:none}
}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:110px 0 80px;overflow:hidden;background:radial-gradient(1200px 600px at 85% 15%,rgba(56,189,248,.16),transparent 60%),radial-gradient(900px 600px at 10% 90%,rgba(46,230,197,.14),transparent 60%),var(--ink)}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line-d) 1px,transparent 1px),linear-gradient(90deg,var(--line-d) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse at 70% 40%,#000 0%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at 70% 40%,#000 0%,transparent 70%);opacity:.5;pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:center;position:relative;z-index:2}
.hero h1{margin-bottom:1.4rem}
.hero .lead{margin-bottom:2rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;margin-bottom:2.6rem}
.badges{display:flex;flex-wrap:wrap;gap:.6rem;list-style:none;padding:0;margin:0}
.badges li{display:flex;align-items:center;gap:.5rem;padding:.45rem .9rem .45rem .5rem;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line-d);font-size:.85rem;color:#cfd8e5}
.badges svg{width:18px;height:18px;color:var(--mint);margin-left:.2rem}
.badges img{width:24px;height:24px;border-radius:50%;background:#fff;padding:1px}
.lab{position:relative;aspect-ratio:1/1;width:100%;max-width:600px;justify-self:end}
.lab canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:pan-y;cursor:grab;border-radius:28px}
.lab canvas:active{cursor:grabbing}
.lab-glass{position:absolute;inset:0;border-radius:28px;background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.01));border:1px solid var(--line-d);pointer-events:none}
.lab-hint{position:absolute;left:50%;top:1.3rem;transform:translateX(-50%);display:flex;align-items:center;gap:.55rem;padding:.5rem 1rem;border-radius:999px;background:rgba(7,12,24,.65);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border:1px solid var(--line-d);font-size:.82rem;color:#d6dee9;white-space:nowrap;pointer-events:none;transition:opacity .5s}
.lab-hint .dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 0 rgba(46,230,197,.7);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(46,230,197,0)}100%{box-shadow:0 0 0 0 rgba(46,230,197,0)}}
.lab-caption{position:absolute;left:1.4rem;bottom:1.3rem;right:1.4rem;display:flex;justify-content:space-between;align-items:end;gap:1rem;font-size:.8rem;color:var(--muted-light);pointer-events:none}
.lab-caption strong{display:block;font-family:var(--display);color:#fff;font-size:1rem;font-weight:600}
.lab-caption .r{text-align:right}
.scroll-cue{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:3;width:26px;height:42px;border-radius:14px;border:2px solid rgba(255,255,255,.3)}
.scroll-cue::after{content:"";position:absolute;left:50%;top:8px;width:4px;height:8px;margin-left:-2px;border-radius:2px;background:#fff;animation:cue 1.8s infinite}
@keyframes cue{0%{opacity:0;transform:translateY(0)}30%{opacity:1}100%{opacity:0;transform:translateY(14px)}}
@media (max-width:960px){
  .hero{min-height:auto;padding-top:116px}
  .hero-grid{grid-template-columns:1fr}
  .lab{justify-self:center;max-width:480px;aspect-ratio:1/1}
  .scroll-cue{display:none}
}

/* ---------- Stats strip ---------- */
.stats{background:var(--ink-2);border-block:1px solid var(--line-d);color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:2.4rem 1.5rem;border-left:1px solid var(--line-d)}
.stat:first-child{border-left:0}
.stat-num{font-family:var(--display);font-weight:700;font-size:clamp(2.2rem,4vw,3.2rem);line-height:1;letter-spacing:-.03em;margin-bottom:.6rem;font-variant-numeric:tabular-nums}
.stat-num .unit{font-size:.55em;color:var(--mint);margin-left:.08em}
.stat p{margin:0;color:var(--muted-light);font-size:.92rem;line-height:1.45}
@media (max-width:800px){.stats-grid{grid-template-columns:repeat(2,1fr)}.stat{padding:1.8rem 1.1rem}.stat:nth-child(3){border-left:0}.stat:nth-child(n+3){border-top:1px solid var(--line-d)}}

/* ---------- Depth gauge ---------- */
.depth-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(2rem,5vw,5rem);align-items:center}
.depth-viz{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(1rem,2.5vw,2rem);position:relative}
.depth-viz svg{width:100%;height:auto;display:block;overflow:visible}
.depth-legend{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-top:1rem;flex-wrap:wrap}
.depth-legend .readout{font-family:var(--display);font-weight:600;font-size:1rem;color:var(--muted)}
.depth-legend .readout b{color:var(--mint-d);font-size:1.3rem}
.depth-checks{list-style:none;padding:0;margin:1.8rem 0 2rem;display:grid;gap:.9rem}
.depth-checks li{display:flex;gap:.8rem;align-items:flex-start}
.depth-checks svg{flex:none;width:24px;height:24px;color:var(--mint-d);margin-top:1px}
.compare-bars{display:grid;gap:1rem;margin-top:.5rem}
.cbar{display:grid;grid-template-columns:150px 1fr 64px;gap:1rem;align-items:center;font-size:.92rem}
.cbar .track{height:12px;border-radius:12px;background:var(--paper-2);overflow:hidden}
.cbar .fill{height:100%;width:0;border-radius:12px;background:var(--ti-3);transition:width 1.6s var(--ease)}
.cbar.ti .fill{background:linear-gradient(90deg,var(--mint-d),var(--mint))}
.cbar b{font-family:var(--display);text-align:right}
.in .cbar .fill{width:var(--w)}
@media (max-width:900px){.depth-grid{grid-template-columns:1fr}}
@media (max-width:520px){.cbar{grid-template-columns:1fr 54px}.cbar .track{grid-column:1/-1;grid-row:2}}

/* ---------- Benefits bento ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:1.1rem}
.card{position:relative;background:var(--white);border-radius:var(--radius);padding:clamp(1.5rem,2.4vw,2.1rem);border:1px solid var(--line-l);overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s var(--ease)}
.card:hover{box-shadow:var(--shadow)}
.card .icon{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(140deg,#e2faf5,#dcefff);color:var(--ink);margin-bottom:1.4rem}
.card .icon svg{width:26px;height:26px}
.card h3{margin-bottom:.55rem}
.card p{color:var(--muted);margin:0;font-size:.97rem}
.card .kpi{font-family:var(--display);font-weight:700;font-size:clamp(2rem,3.4vw,2.8rem);letter-spacing:-.03em;line-height:1;margin:1.4rem 0 .3rem;color:var(--text)}
.card .kpi small{display:block;font-size:.36em;color:var(--muted);font-weight:500;letter-spacing:0;margin-top:.5rem}
.card .tag{display:inline-block;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;font-weight:600;color:var(--mint-d);margin-bottom:.6rem}
.card .more{display:inline-flex;align-items:center;gap:.4rem;margin-top:1.1rem;font-weight:600;text-decoration:none;color:var(--text);font-size:.95rem}
.card .more svg{width:16px;height:16px;transition:transform .2s}
.card .more:hover svg{transform:translateX(3px)}
.card.span-2{grid-column:span 2}.card.span-3{grid-column:span 3}.card.span-4{grid-column:span 4}
.card.feature{background:var(--ink);color:#fff;border-color:transparent}
.card.feature p{color:var(--muted-light)}
.card.feature .icon{background:rgba(46,230,197,.12);color:var(--mint)}
.card.feature .kpi{color:#fff}
.card.feature .kpi small{color:var(--muted-light)}
.card.feature .tag{color:var(--mint)}
.card.feature .more{color:#fff}
.card.feature::after{content:"";position:absolute;right:-80px;bottom:-80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(46,230,197,.22),transparent 70%);pointer-events:none}
.card.green{background:linear-gradient(150deg,#e6faf2,#f7fffc)}
.card.green .icon{background:#c8f2e0}
.card.gumcard{background:linear-gradient(150deg,#fff0f3,#fff)}
.card.gumcard .icon{background:#ffd9e1}
.mini-bars{display:grid;gap:.6rem;margin-top:1.4rem}
.mini-bars div{display:grid;grid-template-columns:90px 1fr 64px;align-items:center;gap:.7rem;font-size:.8rem;color:var(--muted-light)}
.mini-bars i{display:block;height:8px;border-radius:8px;background:rgba(255,255,255,.22);transform-origin:left;transform:scaleX(0);transition:transform 1.4s var(--ease) .2s}
.mini-bars .ti i{background:linear-gradient(90deg,var(--mint-d),var(--mint))}
.mini-bars b{color:#fff;font-family:var(--display);font-weight:600;text-align:right;white-space:nowrap}
.in .mini-bars i{transform:scaleX(var(--w))}
@media (max-width:1000px){.bento{grid-template-columns:repeat(2,1fr)}.card.span-2,.card.span-3,.card.span-4{grid-column:span 1}.card.wide-m{grid-column:span 2}}
@media (max-width:640px){.bento{grid-template-columns:1fr}.card.wide-m{grid-column:span 1}}

/* ---------- Splay test ---------- */
.splay{background:linear-gradient(180deg,var(--ink) 0%,var(--ink-2) 100%)}
.splay-panels{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.panel{position:relative;border-radius:var(--radius);background:rgba(255,255,255,.03);border:1px solid var(--line-d);overflow:hidden}
.panel canvas{width:100%;aspect-ratio:4/3;display:block;touch-action:pan-y;cursor:grab}
.panel-head{position:absolute;inset:1.1rem 1.2rem auto;display:flex;justify-content:space-between;align-items:center;gap:.5rem;pointer-events:none}
.panel-head h3{margin:0;font-size:1.05rem}
.pill{font-size:.75rem;font-weight:600;padding:.35rem .7rem;border-radius:999px;background:rgba(255,255,255,.08);color:#cfd8e5;transition:background .4s,color .4s}
.pill.good{background:rgba(46,230,197,.15);color:var(--mint)}
.pill.bad{background:rgba(255,93,122,.16);color:#ff8ea3}
.panel-foot{position:absolute;inset:auto 1.2rem 1rem;display:flex;justify-content:space-between;align-items:end;font-size:.8rem;color:var(--muted-light);pointer-events:none}
.efficacy{height:6px;border-radius:6px;background:rgba(255,255,255,.1);overflow:hidden;margin-top:.45rem;width:140px}
.efficacy i{display:block;height:100%;width:100%;background:var(--mint);transition:background .4s}
.splay-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:1rem 1.5rem;margin-top:2rem}
.day-counter{font-family:var(--display);font-size:1rem;color:#cfd8e5;min-width:9ch;text-align:center}
.day-counter b{color:#fff;font-size:1.6rem;font-variant-numeric:tabular-nums}
.splay-note{font-size:.85rem;color:var(--muted-light);text-align:center;margin:1.4rem auto 0;max-width:640px}
.splay .btn.ghost{color:#fff}
@media (max-width:700px){.splay-panels{grid-template-columns:1fr}}

/* ---------- Material / hotspots ---------- */
.material-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,6vw,6rem);align-items:center}
.hotspot-stage{position:relative;max-width:330px;margin-inline:auto;width:100%}
.hotspot-stage::before{content:"";position:absolute;inset:5% -15%;background:radial-gradient(closest-side,#d8f6f0,transparent);z-index:0}
.hotspot-stage img{position:relative;z-index:1;mix-blend-mode:multiply;width:100%}
.hotspot{position:absolute;z-index:2;width:34px;height:34px;margin:-17px 0 0 -17px;border-radius:50%;border:0;background:var(--mint);color:var(--ink);display:grid;place-items:center;font-weight:700;font-size:1.1rem;line-height:1;box-shadow:0 0 0 0 rgba(46,230,197,.7);animation:pulse 2s infinite;transition:background .2s,color .2s,transform .2s}
.hotspot:hover{transform:scale(1.1)}
.hotspot[aria-expanded="true"]{background:var(--ink);color:var(--mint);animation:none}
.hotspot-tip{position:absolute;z-index:3;width:min(260px,64vw);padding:1rem 1.1rem;border-radius:var(--radius-s);background:var(--ink);color:#d9e1ec;font-size:.88rem;line-height:1.5;box-shadow:var(--shadow);opacity:0;transform:translateY(6px);pointer-events:none;transition:.25s var(--ease)}
.hotspot-tip.show{opacity:1;transform:none;pointer-events:auto}
.hotspot-tip strong{display:block;color:#fff;font-family:var(--display);margin-bottom:.25rem;font-size:.95rem}
.props{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2rem}
.prop{padding:1.1rem 1.2rem;border-radius:var(--radius-s);background:var(--white);border:1px solid var(--line-l)}
.prop b{display:block;font-family:var(--display);margin-bottom:.2rem}
.prop span{font-size:.9rem;color:var(--muted)}
@media (max-width:900px){.material-grid{grid-template-columns:1fr}.hotspot-stage{max-width:250px}}
@media (max-width:460px){.props{grid-template-columns:1fr}}

/* ---------- Gum teaser ---------- */
.gum-teaser{background:radial-gradient(800px 400px at 90% 10%,rgba(255,93,122,.22),transparent 60%),var(--ink);color:#fff;overflow:hidden}
.gum-grid{display:grid;grid-template-columns:auto 1fr;gap:clamp(2rem,6vw,6rem);align-items:center}
.people{display:grid;grid-template-columns:repeat(5,1fr);gap:.7rem;width:min(340px,78vw)}
.people svg{width:100%;height:auto;color:rgba(255,255,255,.16);transition:color .6s var(--ease),transform .6s var(--ease)}
.people svg.hit{color:var(--gum);transform:translateY(-5px)}
.people-cap{margin-top:1.1rem;font-size:.85rem;color:var(--muted-light);text-align:center}
.big-quote{font-family:var(--display);font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.2;font-weight:600;margin-bottom:1.2rem}
.big-quote em{font-style:normal;color:var(--gum)}
.gum-teaser .lead{color:var(--muted-light)}
.gum-teaser .btn{--bg:var(--gum);--fg:#fff;box-shadow:0 10px 30px -10px rgba(255,93,122,.6)}
@media (max-width:860px){.gum-grid{grid-template-columns:1fr}.people{margin-inline:auto}}

/* ---------- Video ---------- */
.video{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:radial-gradient(600px 300px at 70% 30%,rgba(56,189,248,.35),transparent 60%),radial-gradient(500px 300px at 20% 80%,rgba(46,230,197,.3),transparent 60%),var(--ink-3);box-shadow:var(--shadow);max-width:980px;margin-inline:auto}
.video button{position:absolute;inset:0;width:100%;border:0;background:transparent;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;z-index:2;padding:1rem}
.video .play{width:clamp(64px,10vw,88px);height:clamp(64px,10vw,88px);border-radius:50%;background:var(--mint);display:grid;place-items:center;color:var(--ink);box-shadow:0 0 0 14px rgba(46,230,197,.18);transition:transform .3s var(--ease)}
.video button:hover .play{transform:scale(1.08)}
.video .play svg{width:30px;height:30px;margin-left:5px}
.video .vtitle{font-family:var(--display);font-size:clamp(1.1rem,2vw,1.5rem);font-weight:600;text-align:center}
.video .vnote{font-size:.78rem;opacity:.6;text-align:center}
.video .poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;transition:transform .8s var(--ease)}
.video:hover .poster{transform:scale(1.03)}
.video::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(7,12,24,.15),rgba(7,12,24,.75));pointer-events:none}
.video button{text-shadow:0 2px 12px rgba(0,0,0,.5)}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;z-index:3}

/* ---------- Story / timeline ---------- */
.story-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,6vw,6rem)}
.story-img{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-top:2rem}
.timeline{list-style:none;margin:0;padding:0;position:relative}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--mint),var(--aqua),var(--paper-2))}
.timeline li{position:relative;padding:0 0 2.1rem 3rem}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{content:"";position:absolute;left:4px;top:5px;width:16px;height:16px;border-radius:50%;background:var(--paper);border:3px solid var(--mint-d)}
.timeline li.now::before{background:var(--mint);box-shadow:0 0 0 6px rgba(46,230,197,.22)}
.timeline .when{font-size:.76rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--mint-d)}
.timeline h3{margin:.3rem 0 .35rem}
.timeline p{margin:0;color:var(--muted);font-size:.96rem}
.news-card{display:flex;gap:1.2rem;align-items:center;padding:1rem 1.2rem;border-radius:var(--radius-s);background:var(--white);border:1px solid var(--line-l);margin-top:1rem}
.news-card img{width:64px;height:64px;object-fit:contain;flex:none}
.news-card time{font-size:.78rem;color:var(--muted);font-weight:600;letter-spacing:.06em;text-transform:uppercase}
.news-card p{margin:.2rem 0 0;font-size:.95rem}
@media (max-width:900px){.story-grid{grid-template-columns:1fr}}

/* ---------- Join / forms ---------- */
.join{background:linear-gradient(180deg,var(--paper) 0%,#e4f5f1 100%)}
.join-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(2rem,5vw,5rem);align-items:start}
.perks{list-style:none;padding:0;margin:2rem 0 0;display:grid;gap:1.1rem}
.perks li{display:flex;gap:.9rem;align-items:flex-start}
.perks .n{flex:none;width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--mint);display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:.9rem}
.perks b{display:block;font-family:var(--display)}
.perks span{color:var(--muted);font-size:.95rem}
.form-card{background:var(--white);border-radius:calc(var(--radius) + 4px);padding:clamp(1.3rem,3vw,2.4rem);box-shadow:var(--shadow)}
.tabs{display:grid;grid-template-columns:1fr 1fr;background:var(--paper);border-radius:999px;padding:5px;margin-bottom:1.8rem;position:relative}
.tabs button{position:relative;z-index:1;border:0;background:transparent;padding:.8rem .6rem;border-radius:999px;font-weight:600;color:var(--muted);transition:color .3s;font-size:.95rem}
.tabs button[aria-selected="true"]{color:var(--ink)}
.tabs .slider{position:absolute;top:5px;bottom:5px;left:5px;width:calc(50% - 5px);background:var(--white);border-radius:999px;box-shadow:0 4px 14px -6px rgba(7,12,24,.25);transition:transform .35s var(--ease)}
.tabs[data-active="1"] .slider{transform:translateX(100%)}
.field{display:grid;gap:.4rem;margin-bottom:1rem}
.field label,.field .label{font-size:.85rem;font-weight:600}
.field .req{color:var(--gum-d)}
.field input,.field textarea{width:100%;font:inherit;font-size:1rem;padding:.85rem 1rem;border-radius:12px;border:1.5px solid var(--paper-2);background:var(--paper);color:var(--text);transition:border-color .2s,background .2s,box-shadow .2s;-webkit-appearance:none;appearance:none}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--mint-d);background:var(--white);box-shadow:0 0 0 4px rgba(46,230,197,.18)}
.field input:user-invalid{border-color:var(--gum)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;border:0;padding:0;margin:0 0 1rem}
.chips legend{font-size:.85rem;font-weight:600;margin-bottom:.5rem;padding:0}
.chips label{position:relative}
.chips input{position:absolute;opacity:0;inset:0;cursor:pointer;margin:0}
.chips span{display:inline-block;padding:.55rem .95rem;border-radius:999px;border:1.5px solid var(--paper-2);font-size:.88rem;font-weight:500;transition:.2s;background:var(--paper);cursor:pointer}
.chips input:checked+span{background:var(--ink);color:#fff;border-color:var(--ink)}
.chips input:focus-visible+span{outline:3px solid var(--mint);outline-offset:2px}
.check{display:flex;gap:.7rem;align-items:flex-start;font-size:.9rem;color:var(--muted);margin-bottom:.7rem;cursor:pointer}
.check input{flex:none;width:20px;height:20px;margin:1px 0 0;accent-color:var(--mint-d)}
.check a{color:var(--text)}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.form-status{margin-top:1rem;padding:.9rem 1rem;border-radius:12px;font-size:.93rem;display:none}
.form-status.ok{display:block;background:#e0f8f1;color:#05634f}
.form-status.err{display:block;background:#ffe9ed;color:#9b1c35}
.form-card .btn{width:100%;margin-top:.6rem}
.btn[disabled]{opacity:.6;pointer-events:none}
.tabpanel[hidden]{display:none}
.form-intro{color:var(--muted);font-size:.95rem;margin-bottom:1.3rem}
@media (max-width:900px){.join-grid{grid-template-columns:1fr}}
@media (max-width:520px){.row2{grid-template-columns:1fr;gap:0}}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin-inline:auto;display:grid;gap:.8rem}
.faq-list details{background:var(--white);border:1px solid var(--line-l);border-radius:var(--radius-s);overflow:hidden;transition:box-shadow .3s}
.faq-list details[open]{box-shadow:var(--shadow)}
.faq-list summary{list-style:none;cursor:pointer;padding:1.25rem 1.5rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;font-family:var(--display);font-weight:600;font-size:1.06rem}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary .pm{flex:none;width:32px;height:32px;border-radius:50%;background:var(--paper);position:relative;transition:background .3s,transform .4s var(--ease)}
.faq-list summary .pm::before,.faq-list summary .pm::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:2px;margin:-1px 0 0 -6px;background:var(--text);border-radius:2px;transition:transform .3s}
.faq-list summary .pm::after{transform:rotate(90deg)}
.faq-list details[open] .pm{background:var(--mint);transform:rotate(180deg)}
.faq-list details[open] .pm::after{transform:rotate(0)}
.faq-body{padding:0 1.5rem 1.4rem;color:var(--muted)}
.faq-body p:last-child{margin:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#c6cfdc;padding:4.5rem 0 2rem;font-size:.93rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2.5rem}
.foot-brand p{color:var(--muted-light);max-width:34ch;margin-top:1rem}
.site-footer h4{color:#fff;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;font-family:var(--font);margin-bottom:1rem}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:.55rem}
.site-footer a{text-decoration:none;opacity:.85}
.site-footer a:hover{opacity:1;color:var(--mint)}
.socials{display:flex;gap:.6rem;margin-top:1.2rem}
.socials a{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.07);opacity:1;transition:background .2s,transform .2s,color .2s}
.socials a:hover{background:var(--mint);color:var(--ink);transform:translateY(-2px)}
.socials svg{width:18px;height:18px}
.warning{margin-top:3rem;padding:1.1rem 1.3rem;border-radius:var(--radius-s);border:1px solid rgba(255,196,0,.25);background:rgba(255,196,0,.06);color:#e8dcb5;font-size:.85rem;display:flex;gap:.9rem;align-items:flex-start}
.warning svg{flex:none;width:22px;height:22px;color:#ffc400;margin-top:1px}
.warning p{margin:0}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;margin-top:2.2rem;padding-top:1.6rem;border-top:1px solid var(--line-d);font-size:.84rem;color:var(--muted-light)}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}}
@media (max-width:700px){.site-footer{padding-bottom:6rem}}

/* ---------- Mobile sticky CTA ---------- */
.sticky-cta{position:fixed;left:1rem;right:1rem;bottom:1rem;z-index:40;display:none;transform:translateY(160%);transition:transform .4s var(--ease)}
.sticky-cta.show{transform:none}
.sticky-cta .btn{width:100%;box-shadow:0 14px 40px -10px rgba(7,12,24,.7)}
@media (max-width:700px){.sticky-cta{display:block}}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:var(--d,0s)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- Sub pages ---------- */
.page-hero{padding:150px 0 80px;background:radial-gradient(900px 500px at 80% 0%,rgba(56,189,248,.15),transparent 60%),var(--ink);color:#fff}
.page-hero.gum{background:radial-gradient(900px 500px at 85% 0%,rgba(255,93,122,.25),transparent 60%),radial-gradient(700px 400px at 0% 100%,rgba(46,230,197,.1),transparent 60%),var(--ink)}
.page-hero .eyebrow{color:var(--mint)}
.page-hero.gum .eyebrow{color:#ff8ea3}
.page-hero .lead{color:var(--muted-light)}
.prose{max-width:760px;margin-inline:auto}
.prose h2{font-size:clamp(1.35rem,2.4vw,1.75rem);margin-top:2.6rem}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:#3b4658}
.prose a{color:var(--mint-d)}
.prose dl{display:grid;grid-template-columns:max-content 1fr;gap:.4rem 1.5rem;color:#3b4658}
.prose dt{font-weight:600;color:var(--text)}
.prose dd{margin:0}
.stat-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.tile{background:var(--white);border:1px solid var(--line-l);border-radius:var(--radius);padding:1.6rem}
.tile .stat-num{color:var(--text)}
.tile .stat-num .unit{color:var(--gum-d)}
.tile p{margin:0;color:var(--muted);font-size:.93rem}
.tile.hl{background:var(--ink);color:#fff;border-color:transparent}
.tile.hl .stat-num{color:#fff}
.tile.hl .stat-num .unit{color:var(--gum)}
.tile.hl p{color:var(--muted-light)}
.stages{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.stage-view{position:relative;aspect-ratio:389/440;max-width:360px;margin-inline:auto;width:100%}
.stage-view img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:0;transition:opacity .6s var(--ease),transform .6s var(--ease);transform:scale(.97)}
.stage-view img.on{opacity:1;transform:none}
.stage-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:.4rem;margin-bottom:1.2rem}
.stage-tabs button{border:0;background:var(--paper-2);border-radius:10px;padding:.7rem .4rem;font-size:.8rem;font-weight:600;color:var(--muted);transition:background .25s,color .25s}
.stage-tabs button[aria-selected="true"]{background:var(--ink);color:#fff}
.stage-range{width:100%;accent-color:var(--gum-d);margin:0 0 1.6rem}
.stage-text h3{font-size:1.5rem}
.stage-text p{color:var(--muted)}
.stage-text .sev{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:.3rem .65rem;border-radius:999px;margin-bottom:.8rem}
.solution{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,5rem);align-items:center}
.solution .hotspot-stage img{max-width:300px;margin-inline:auto}
@media (max-width:860px){.stages,.solution{grid-template-columns:1fr}.stage-tabs{grid-template-columns:repeat(2,1fr)}}
.source{font-size:.78rem;color:var(--muted);margin-top:1rem}
.cta-band{background:var(--ink);color:#fff;border-radius:calc(var(--radius) + 6px);padding:clamp(2rem,5vw,3.5rem);display:flex;justify-content:space-between;align-items:center;gap:2rem;flex-wrap:wrap;background-image:radial-gradient(600px 300px at 100% 0%,rgba(46,230,197,.2),transparent 60%)}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);margin:0 0 .4rem}
.cta-band p{margin:0;color:var(--muted-light)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .js .reveal{opacity:1;transform:none}
}