:root{
  --ink:#0c1320; --ink-2:#111c2e; --panel:#16233a;
  --line:rgba(122,210,255,.14);
  --cyan:#46c8ff; --cyan-soft:rgba(70,200,255,.12);
  --amber:#f5a93b; --amber-deep:#d98417;
  --text:#e8eef7; --muted:#9fb0c6;
  --radius:18px;
  --display:'Sora',sans-serif; --body:'IBM Plex Sans',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:var(--ink);color:var(--text);line-height:1.65;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--display);line-height:1.15;letter-spacing:-.02em}
.wrap{width:min(1140px,92%);margin:0 auto}
section{padding:88px 0;position:relative}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);background:var(--cyan-soft);border:1px solid var(--line);padding:.45em 1.1em;border-radius:99px;margin-bottom:1.2rem}
.lead{color:var(--muted);font-size:1.08rem;max-width:62ch}
.h2{font-size:clamp(1.9rem,4vw,2.7rem);margin-bottom:1.1rem}
.center{text-align:center}
.center .lead{margin-inline:auto}

/* NAV */
nav{position:sticky;top:0;z-index:50;background:rgba(12,19,32,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{font-family:var(--display);font-weight:800;font-size:1.15rem;display:flex;align-items:center;gap:.55rem}
.logo .mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--cyan),#1f7fb8);display:grid;place-items:center;font-size:1rem}
.logo span b{color:var(--cyan)}
.links{display:flex;gap:1.7rem;font-size:.92rem;font-weight:500;color:var(--muted)}
.links a:hover,.links a.active{color:var(--cyan)}
.btn{display:inline-block;font-family:var(--display);font-weight:700;font-size:.95rem;padding:.85em 1.7em;border-radius:12px;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px)}
.btn-amber{background:linear-gradient(135deg,var(--amber),var(--amber-deep));color:#1a1206;box-shadow:0 8px 24px rgba(245,169,59,.25)}
.btn-ghost{border:1px solid var(--line);color:var(--text);background:rgba(255,255,255,.03)}
.btn-sm{padding:.6em 1.2em;font-size:.85rem}
.btn-lg{font-size:1.1rem;padding:1em 2.2em}
@media(max-width:840px){.links{display:none}}

/* PAGE HERO */
.page-hero{padding:96px 0 72px;background:
  radial-gradient(900px 480px at 85% -10%,rgba(70,200,255,.13),transparent 60%),
  radial-gradient(700px 420px at -10% 110%,rgba(245,169,59,.07),transparent 60%),var(--ink)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 56px;mask:radial-gradient(ellipse at 70% 0%,#000 0%,transparent 60%);pointer-events:none}
.page-hero .wrap{position:relative}
.page-hero h1{font-size:clamp(2.4rem,5.5vw,3.8rem);font-weight:800}
.page-hero h1 em{font-style:normal;color:var(--cyan)}
.hero{padding:110px 0 100px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:4rem;align-items:center;position:relative}
.hero h1{font-size:clamp(2.6rem,6vw,4.4rem);font-weight:800}
.hero h1 em{font-style:normal;color:var(--cyan)}
.tagline{font-family:var(--display);font-weight:600;color:var(--amber);margin:1.1rem 0 .9rem;font-size:1.15rem}
.hero-ctas{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2rem}
.molecule{aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 35% 30%,rgba(70,200,255,.35),rgba(70,200,255,.05) 55%,transparent 70%);border:1px solid var(--line);display:grid;place-items:center;position:relative;animation:float 7s ease-in-out infinite}
.molecule::after{content:"";position:absolute;inset:14%;border-radius:50%;border:1px dashed rgba(122,210,255,.3);animation:spin 30s linear infinite}
.molecule .dot{position:absolute;width:14px;height:14px;border-radius:50%;background:var(--cyan);box-shadow:0 0 18px var(--cyan)}
.molecule .d1{top:8%;left:48%}.molecule .d2{bottom:14%;left:16%}.molecule .d3{right:10%;top:42%}
.molecule h3{font-size:1rem;color:var(--muted);font-weight:600;text-align:center;padding:0 18%}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:840px){.hero-grid{grid-template-columns:1fr}.molecule{max-width:300px;margin:0 auto}}

/* STATS */
.stats{background:var(--ink-2);border-block:1px solid var(--line);padding:34px 0}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center}
.stats.three-up .wrap{grid-template-columns:repeat(3,1fr)}
.stat b{font-family:var(--display);font-size:1.7rem;color:var(--cyan);display:block}
.stat span{font-size:.85rem;color:var(--muted)}
@media(max-width:760px){.stats .wrap{grid-template-columns:repeat(2,1fr)}.stats.three-up .wrap{grid-template-columns:1fr}}

/* LAYOUT BLOCKS */
.split{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:start}
.checks{list-style:none;margin-top:1.4rem}
.checks li{padding:.45em 0 .45em 2em;position:relative}
.checks li::before{content:"✓";position:absolute;left:0;top:.45em;width:1.35em;height:1.35em;border-radius:7px;background:var(--cyan-soft);color:var(--cyan);display:grid;place-items:center;font-size:.85em;font-weight:700}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
.cards.three{grid-template-columns:repeat(3,1fr)}
.cards.four{grid-template-columns:repeat(4,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-5px);border-color:rgba(70,200,255,.45)}
.card .ico{font-size:1.5rem;margin-bottom:.7rem}
.card h3{font-size:1.05rem;margin-bottom:.45rem}
.card p{font-size:.9rem;color:var(--muted)}
.card .big{font-family:var(--display);font-size:1.9rem;color:var(--cyan);font-weight:800}
.card .label{font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);display:block;margin-bottom:.6rem}
.card .step-no{font-family:var(--display);font-size:2.2rem;font-weight:800;color:var(--cyan);opacity:.45}
@media(max-width:840px){.split{grid-template-columns:1fr}.cards.three,.cards.four{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.cards,.cards.three,.cards.four{grid-template-columns:1fr}}

.quote{background:linear-gradient(135deg,rgba(70,200,255,.07),rgba(245,169,59,.05));border:1px solid var(--line);border-radius:24px;padding:3rem;max-width:880px;margin:0 auto;text-align:center}
.quote p{font-size:1.25rem;font-family:var(--display);font-weight:600;line-height:1.5}
.quote cite{display:block;margin-top:1.3rem;color:var(--amber);font-style:normal;font-weight:600}

.compare{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin-top:2.4rem}
.price-card{border-radius:var(--radius);padding:2.2rem;text-align:center;border:1px solid var(--line)}
.price-card.old{background:var(--panel)}
.price-card.new{background:linear-gradient(150deg,rgba(70,200,255,.16),rgba(70,200,255,.04));border-color:rgba(70,200,255,.5)}
.price-card small{text-transform:uppercase;letter-spacing:.14em;font-size:.72rem;color:var(--muted)}
.price-card b{display:block;font-family:var(--display);font-size:2.6rem;margin:.4rem 0}
.price-card.old b{color:var(--muted)}
.price-card.new b{color:var(--cyan)}
@media(max-width:680px){.compare{grid-template-columns:1fr}}

.dark-alt{background:var(--ink-2);border-block:1px solid var(--line)}
.rep-grid{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:center}
.rep-list{list-style:none;display:grid;gap:.6rem}
.rep-list li{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:.85em 1.2em;font-size:.93rem;display:flex;gap:.7em;align-items:center}
.rep-list li::before{content:"🛠";opacity:.8}
@media(max-width:840px){.rep-grid{grid-template-columns:1fr}}

/* numbered fail list (science) */
.fails{counter-reset:f;list-style:none;display:grid;gap:1rem;margin-top:1.6rem}
.fails li{counter-increment:f;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:1.3rem 1.4rem 1.3rem 4.2rem;position:relative}
.fails li::before{content:counter(f,decimal-leading-zero);position:absolute;left:1.2rem;top:1.15rem;font-family:var(--display);font-weight:800;color:var(--cyan);opacity:.6;font-size:1.3rem}
.fails b{font-family:var(--display);display:block;margin-bottom:.25rem}
.fails p{color:var(--muted);font-size:.93rem}

/* chemistry code block */
.chem{background:#0a111d;border:1px solid var(--line);border-radius:16px;padding:1.6rem;overflow-x:auto;font-family:'IBM Plex Mono',monospace;font-size:.82rem;line-height:1.9;color:#9fe3ff;margin-top:1.6rem;white-space:pre}
.chem-note{font-size:.88rem;color:var(--muted);margin-top:1rem}

/* FAQ */
details{background:var(--panel);border:1px solid var(--line);border-radius:14px;margin-bottom:.8rem;overflow:hidden}
summary{cursor:pointer;font-family:var(--display);font-weight:600;padding:1.1rem 1.4rem;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1rem}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--cyan);font-size:1.4rem;transition:transform .25s}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 1.4rem 1.2rem;color:var(--muted);font-size:.95rem}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.contact-card{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:2.4rem;display:grid;gap:1.1rem}
.c-row{display:flex;align-items:center;gap:1rem}
.c-row .ic{width:46px;height:46px;border-radius:12px;background:var(--cyan-soft);display:grid;place-items:center;font-size:1.2rem;flex-shrink:0}
.c-row b{display:block;font-family:var(--display);font-size:.95rem}
.c-row span{color:var(--muted);font-size:.9rem}
.c-row a:hover{color:var(--cyan)}
form{display:grid;gap:1rem}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
label{font-size:.82rem;font-weight:600;color:var(--muted);display:grid;gap:.4rem}
input,textarea{background:var(--ink-2);border:1px solid var(--line);border-radius:10px;padding:.85em 1em;color:var(--text);font-family:var(--body);font-size:.95rem;width:100%}
input:focus,textarea:focus{outline:none;border-color:var(--cyan)}
textarea{min-height:130px;resize:vertical}
button.btn{border:none;cursor:pointer}
@media(max-width:840px){.contact-grid{grid-template-columns:1fr}.f-row{grid-template-columns:1fr}}

/* CTA BAND */
.cta-band{text-align:center;background:radial-gradient(700px 360px at 50% 0%,rgba(245,169,59,.12),transparent 65%),var(--ink-2);border-block:1px solid var(--line)}
.cta-band h2{font-size:clamp(2rem,4.5vw,3rem)}
.cta-band p{margin:1rem auto 2rem}

/* FOOTER */
footer{padding:60px 0 40px;border-top:1px solid var(--line);background:var(--ink)}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2.5rem}
.foot h4{font-size:.95rem;margin-bottom:1rem;color:var(--cyan)}
.foot ul{list-style:none;display:grid;gap:.5rem;font-size:.9rem;color:var(--muted)}
.foot ul a:hover{color:var(--cyan)}
.foot .about{color:var(--muted);font-size:.92rem;max-width:34ch}
.copy{margin-top:3rem;padding-top:1.4rem;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem}
@media(max-width:760px){.foot{grid-template-columns:1fr}}

/* reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}