/* ═══ NERVELIN — WHITE + PURPLE — PROPER LAYOUT ═══ */
:root{
  --pri:#6B46C1;--pri-d:#553C9A;--pri-l:#805AD5;--pri-xl:#B794F4;
  --acc:#9F7AEA;--acc-l:#D6BCFA;--acc-xl:#E9D8FD;
  --lav:#F3EFFF;--lav-l:#FAF5FF;--snow:#F9FAFB;
  --dk:#1A1A2E;--dk-2:#16213E;
  --txt:#2D3748;--txt-2:#4A5568;--txt-3:#A0AEC0;
  --white:#FFFFFF;
  --r:8px;--r-lg:16px;--r-xl:24px;
  --sh:0 2px 12px rgba(107,70,193,.06);
  --sh-md:0 8px 28px rgba(107,70,193,.09);
  --sh-lg:0 16px 44px rgba(107,70,193,.13);
  --font-h:'Sora',system-ui,sans-serif;
  --font-b:'Nunito','Segoe UI',system-ui,sans-serif;
  --ease:cubic-bezier(.25,.46,.45,.94);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{font-family:var(--font-b);color:var(--txt);background:var(--white);margin:0;line-height:1.78;font-size:1rem;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--pri);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--pri-l)}
h1,h2,h3,h4{font-family:var(--font-h);color:var(--dk);line-height:1.25;margin:0 0 .5em}
h1{font-size:clamp(1.9rem,4.5vw,2.85rem);font-weight:800}
h2{font-size:clamp(1.5rem,3.2vw,2.15rem);font-weight:700}
h3{font-size:clamp(1.05rem,2.2vw,1.35rem);font-weight:700}
p{margin:0 0 1em}

.nv-wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.nv-narrow{max-width:720px;margin:0 auto}
.nv-sec{padding:72px 0}
.nv-sec.wash{background:var(--lav-l)}
.nv-sec.sand{background:var(--lav)}
.nv-skip{position:absolute;left:-999px;top:auto;z-index:9999;background:var(--pri);color:#fff;padding:8px 16px;border-radius:0 0 var(--r) 0;font-weight:700}
.nv-skip:focus{left:0;top:0}

/* topbar */
.nv-topbar{background:var(--dk);color:var(--acc-xl);text-align:center;padding:8px 16px;font-size:.8rem;letter-spacing:.3px}
.nv-topbar a{color:var(--pri-xl);font-weight:700;text-decoration:underline}
.nv-topbar-dot{display:inline-block;width:6px;height:6px;background:var(--pri-l);border-radius:50%;margin-right:6px;animation:nv-blink 1.8s infinite}
@keyframes nv-blink{0%,100%{opacity:1}50%{opacity:.25}}

/* header */
.nv-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(107,70,193,.06);transition:box-shadow .3s}
.nv-header.scrolled{box-shadow:0 2px 16px rgba(107,70,193,.1)}
.nv-hdr-in{display:flex;align-items:center;justify-content:space-between;height:62px}
.nv-logo{font-family:var(--font-h);font-size:1.3rem;font-weight:800;color:var(--dk)}
.nv-logo em{font-style:normal;color:var(--pri)}
.nv-nav{display:flex;gap:22px}
.nv-nav a{color:var(--txt-2);font-size:.85rem;font-weight:600;position:relative;transition:color .25s}
.nv-nav a:hover{color:var(--pri)}
.nv-nav a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--pri);border-radius:2px;transition:width .25s}
.nv-nav a:hover::after{width:100%}
.nv-hdr-cta{display:flex;align-items:center;gap:10px}

/* buttons */
.nv-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:12px 28px;border-radius:var(--r);font-weight:700;font-size:.92rem;border:none;cursor:pointer;text-decoration:none;letter-spacing:.2px;transition:all .3s var(--ease);font-family:var(--font-h)}
.nv-btn-p{background:var(--pri);color:var(--white)}
.nv-btn-p:hover{background:var(--pri-d);color:var(--white);transform:translateY(-2px);box-shadow:0 8px 24px rgba(107,70,193,.28)}
.nv-btn-o{border:2px solid var(--pri);color:var(--pri);background:transparent}
.nv-btn-o:hover{background:var(--pri);color:var(--white)}
.nv-btn-s{padding:9px 18px;font-size:.83rem}
.nv-btn-l{padding:15px 36px;font-size:1rem}

/* burger + drawer */
.nv-burger{display:none;background:none;border:none;cursor:pointer;padding:6px;flex-direction:column;gap:5px}
.nv-burger span{width:22px;height:2px;background:var(--pri);border-radius:2px;transition:.3s}
.nv-overlay{position:fixed;inset:0;background:rgba(26,26,46,.5);z-index:200;opacity:0;pointer-events:none;transition:opacity .3s}
.nv-overlay.open{opacity:1;pointer-events:auto}
.nv-drawer{position:fixed;top:0;right:-300px;width:280px;height:100%;background:var(--white);z-index:201;padding:68px 22px 30px;transition:right .3s;overflow-y:auto;box-shadow:-4px 0 20px rgba(0,0,0,.08)}
.nv-drawer.open{right:0}
.nv-drawer nav{display:flex;flex-direction:column;gap:4px}
.nv-drawer nav a{color:var(--txt);font-size:1rem;font-weight:600;padding:10px 14px;border-radius:var(--r)}
.nv-drawer nav a:hover{background:var(--lav);color:var(--pri)}
.nv-drawer-x{position:absolute;top:14px;right:14px;background:none;border:none;color:var(--pri);font-size:1.8rem;cursor:pointer}

/* ═══ HERO — SPLIT GRID + ANIMATED PULSE ═══ */
.nv-hero{background:linear-gradient(160deg,var(--lav-l) 0%,var(--white) 60%,var(--lav) 100%);padding:60px 0 68px;overflow:hidden;position:relative}
.nv-hero::before{content:'';position:absolute;top:-100px;right:-100px;width:500px;height:500px;background:radial-gradient(circle,rgba(107,70,193,.06) 0%,transparent 70%);border-radius:50%;animation:nv-glow 6s ease-in-out infinite alternate}
.nv-hero::after{content:'';position:absolute;bottom:-80px;left:-80px;width:400px;height:400px;background:radial-gradient(circle,rgba(159,122,234,.05) 0%,transparent 70%);border-radius:50%;animation:nv-glow 8s ease-in-out 2s infinite alternate}
@keyframes nv-glow{0%{transform:scale(1)}100%{transform:scale(1.15)}}
.nv-hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;position:relative;z-index:2}
.nv-hero h1 span{color:var(--pri)}
.nv-hero-lead{font-size:1.04rem;color:var(--txt-2);line-height:1.8;margin-bottom:16px}
.nv-hero-chips{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.nv-chip{background:var(--lav);color:var(--pri);padding:5px 14px;border-radius:var(--r);font-size:.78rem;font-weight:600}
.nv-hero-acts{display:flex;gap:12px;margin-top:18px;flex-wrap:wrap}
.nv-hero-stats{display:flex;gap:24px;margin-top:20px}
.nv-hstat{text-align:center}
.nv-hstat-n{display:block;font-family:var(--font-h);font-size:1.4rem;font-weight:800;color:var(--pri)}
.nv-hstat-l{font-size:.7rem;color:var(--txt-3);text-transform:uppercase;letter-spacing:.5px}
.nv-hero-media{position:relative;display:flex;justify-content:center;align-items:center}
.nv-hero-media img{max-height:440px;width:auto;filter:drop-shadow(0 16px 40px rgba(107,70,193,.15));animation:nv-float 5s ease-in-out infinite}
@keyframes nv-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.nv-hero-tag{position:absolute;background:var(--white);border:1px solid rgba(107,70,193,.1);padding:8px 14px;border-radius:var(--r);font-size:.8rem;box-shadow:var(--sh-md);font-family:var(--font-h)}
.nv-hero-tag b{color:var(--pri);font-size:1rem}
.nv-hero-tag span{display:block;font-size:.68rem;color:var(--txt-3)}
.nv-hero-tag.t1{top:10%;right:0;animation:nv-pop 4s ease-in-out infinite}
.nv-hero-tag.t2{bottom:15%;left:0;animation:nv-pop 4s ease-in-out 2s infinite}
@keyframes nv-pop{0%,100%{transform:scale(1)}50%{transform:scale(1.04) translateY(-3px)}}

/* trust */
.nv-trust{background:var(--white);padding:14px 0;border-bottom:1px solid rgba(107,70,193,.05)}
.nv-trust-in{display:flex;justify-content:center;align-items:center;gap:32px;flex-wrap:wrap}
.nv-trust-in img{height:40px;width:auto;opacity:.55;transition:opacity .3s}
.nv-trust-in img:hover{opacity:1}

/* headings */
.nv-head{text-align:center;max-width:640px;margin:0 auto 40px}
.nv-tag{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:1.8px;text-transform:uppercase;color:var(--pri);margin-bottom:8px;font-family:var(--font-h)}
.nv-lead{font-size:1.04rem;color:var(--txt-2);line-height:1.8}

/* medical review */
.nv-medrev{display:flex;gap:8px;align-items:flex-start;background:rgba(107,70,193,.05);border-left:3px solid var(--pri);padding:10px 14px;border-radius:0 var(--r) var(--r) 0;margin:18px 0;font-size:.84rem}

/* AEO */
.nv-answer{background:var(--lav-l);border:1px solid rgba(107,70,193,.08);border-radius:var(--r-lg);padding:18px 22px;margin:20px 0}
.nv-answer h3{font-size:1rem;margin-bottom:5px}
.nv-answer p{margin:0;font-size:.92rem;color:var(--txt-2)}

/* grid/split */
.nv-split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.nv-card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}

/* card */
.nv-card{background:var(--white);border:1px solid rgba(107,70,193,.06);border-radius:var(--r-lg);padding:26px 22px;box-shadow:var(--sh);transition:transform .3s,box-shadow .3s}
.nv-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.nv-card-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--lav);border-radius:10px;font-size:1.2rem;margin-bottom:10px}

/* advantages */
.nv-adv-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.nv-adv{display:flex;gap:10px;align-items:flex-start;padding:14px;background:var(--white);border-radius:var(--r);border:1px solid rgba(107,70,193,.06);box-shadow:var(--sh)}
.nv-adv-check{width:22px;height:22px;min-width:22px;display:flex;align-items:center;justify-content:center;background:var(--pri);color:var(--white);border-radius:50%;font-size:.7rem;font-weight:700;margin-top:2px}

/* mechanism */
.nv-mech{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
.nv-mech-card{background:var(--white);border:1px solid rgba(107,70,193,.06);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh);position:relative}
.nv-mech-n{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;background:var(--pri);color:var(--white);border-radius:50%;font-weight:800;font-size:.82rem;font-family:var(--font-h);margin-bottom:10px}

/* science cards */
.nv-sci-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.nv-sci-card{padding:24px;border-radius:var(--r-lg);border:1px solid rgba(107,70,193,.1);background:var(--white);box-shadow:var(--sh);transition:border-color .3s}
.nv-sci-card:hover{border-color:var(--pri-l)}
.nv-sci-card h3{color:var(--pri);font-size:1.02rem}

/* ingredients */
.nv-ing{display:flex;gap:14px;padding:22px 0;border-bottom:1px solid rgba(107,70,193,.06)}
.nv-ing:last-child{border:none}
.nv-ing-n{width:36px;height:36px;min-width:36px;display:flex;align-items:center;justify-content:center;background:var(--pri);color:var(--white);border-radius:50%;font-weight:800;font-size:.82rem;font-family:var(--font-h);margin-top:2px}
.nv-ing-role{display:inline-block;background:rgba(107,70,193,.07);padding:2px 10px;border-radius:20px;font-size:.71rem;font-weight:600;color:var(--pri);margin-bottom:4px;font-family:var(--font-h)}

/* benefits panel */
.nv-benefits-panel{background:linear-gradient(145deg,var(--dk),var(--dk-2));border-radius:var(--r-xl);padding:48px 40px;color:var(--white);box-shadow:var(--sh-lg)}
.nv-benefits-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.nv-benefit{display:flex;gap:12px;margin-bottom:14px;align-items:flex-start}
.nv-benefit-icon{width:36px;height:36px;min-width:36px;display:flex;align-items:center;justify-content:center;background:rgba(107,70,193,.2);border-radius:50%;font-size:1rem}
.nv-benefit h4{margin:0 0 2px;color:var(--white);font-family:var(--font-b);font-size:.92rem;font-weight:700}
.nv-benefit p{margin:0;font-size:.85rem;color:rgba(255,255,255,.6)}

/* compare table */
.nv-compare{width:100%;border-collapse:collapse;border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
.nv-compare th,.nv-compare td{padding:12px 16px;text-align:center;font-size:.86rem}
.nv-compare thead th{background:var(--dk);color:var(--white);font-weight:700;font-family:var(--font-h)}
.nv-compare thead th:first-child{text-align:left}
.nv-compare tbody td{border-bottom:1px solid rgba(107,70,193,.05);background:var(--white)}
.nv-compare tbody td:first-child{text-align:left;font-weight:600;color:var(--dk)}
.nv-compare .yes{color:var(--pri);font-weight:700}
.nv-compare .no{color:#E53E3E}
.nv-compare .nv-col{background:rgba(107,70,193,.04)}

/* reviews */
.nv-reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.nv-review{background:var(--white);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh);border:1px solid rgba(107,70,193,.06)}
.nv-review-stars{color:#F6AD55;font-size:1.05rem;margin-bottom:10px;letter-spacing:2px}
.nv-review blockquote{margin:0 0 14px;font-size:.91rem;line-height:1.75;color:var(--txt);font-style:italic}
.nv-review-author{display:flex;align-items:center;gap:10px}
.nv-review-author img{width:42px;height:42px;border-radius:50%;object-fit:cover;border:2px solid var(--lav)}
.nv-review-author strong{display:block;font-size:.86rem}
.nv-review-author span{font-size:.74rem;color:var(--txt-3)}

/* pricing */
.nv-pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.nv-prcard{background:var(--white);border:2px solid rgba(107,70,193,.08);border-radius:var(--r-lg);padding:28px 20px;text-align:center;box-shadow:var(--sh);transition:transform .3s;position:relative}
.nv-prcard:hover{transform:translateY(-3px)}
.nv-prcard.feat{border-color:var(--pri);box-shadow:0 0 0 1px var(--pri),var(--sh-lg)}
.nv-prcard-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--pri);color:var(--white);padding:4px 18px;border-radius:20px;font-size:.72rem;font-weight:700;white-space:nowrap;font-family:var(--font-h)}
.nv-prcard img{max-height:130px;margin:10px auto}
.nv-prcard-amt{font-family:var(--font-h);font-size:2rem;font-weight:800;color:var(--dk)}
.nv-prcard-amt small{font-size:.84rem;color:var(--txt-3);font-weight:400}
.nv-prcard-was{font-size:.82rem;color:var(--txt-3);text-decoration:line-through}
.nv-prcard-save{font-size:.84rem;color:var(--pri);font-weight:700}
.nv-prcard ul{list-style:none;padding:0;text-align:left;margin:12px 0}
.nv-prcard li{padding:5px 0;font-size:.84rem;color:var(--txt-2);border-bottom:1px solid rgba(107,70,193,.04)}
.nv-prcard li::before{content:'✓ ';color:var(--pri);font-weight:700}
.nv-pay-row{text-align:center;margin-top:12px}
.nv-pay-row img{display:inline-block;height:28px;width:auto}

/* how to take */
.nv-take-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.nv-take{padding:20px;background:var(--white);border-radius:var(--r);border-left:3px solid var(--pri);box-shadow:var(--sh)}
.nv-take-n{display:inline-flex;width:26px;height:26px;align-items:center;justify-content:center;background:var(--pri);color:var(--white);border-radius:50%;font-weight:700;font-size:.78rem;margin-bottom:6px;font-family:var(--font-h)}

/* guarantee */
.nv-guarantee{text-align:center;padding:40px;background:var(--lav-l);border-radius:var(--r-xl);border:2px solid rgba(107,70,193,.08)}
.nv-guarantee img{margin:0 auto 16px;height:90px;width:auto}

/* refs */
.nv-refs{list-style:none;padding:0}
.nv-refs li{padding:9px 0;border-bottom:1px solid rgba(107,70,193,.05);font-size:.86rem}
.nv-refs a{color:var(--pri)}

/* FAQ */
.nv-faq{max-width:680px;margin:0 auto}
.nv-faq-item{border-bottom:1px solid rgba(107,70,193,.07)}
.nv-faq-q{display:flex;width:100%;justify-content:space-between;align-items:center;padding:15px 0;background:none;border:none;font-size:.95rem;font-weight:600;color:var(--dk);cursor:pointer;text-align:left;font-family:var(--font-b)}
.nv-faq-q::after{content:'+';font-size:1.2rem;color:var(--pri);transition:transform .3s}
.nv-faq-item.open .nv-faq-q::after{transform:rotate(45deg)}
.nv-faq-a{max-height:0;overflow:hidden;transition:max-height .4s}
.nv-faq-item.open .nv-faq-a{max-height:400px}
.nv-faq-a-in{padding:0 0 14px;font-size:.9rem;color:var(--txt-2);line-height:1.75}
.nv-faq-a-in a{color:var(--pri);font-weight:600}

/* blog links */
.nv-blog-links{columns:2;column-gap:20px}
.nv-blog-links a{display:block;padding:7px 0;font-size:.88rem;color:var(--pri);border-bottom:1px solid rgba(107,70,193,.05);break-inside:avoid}
.nv-blog-links a:hover{color:var(--pri-d)}

/* CTA bar */
.nv-cta-bar{background:linear-gradient(135deg,var(--dk),var(--dk-2));color:var(--white);text-align:center;padding:56px 20px}
.nv-cta-bar h2{color:var(--white)}
.nv-cta-bar .nv-lead{color:rgba(255,255,255,.6)}

/* breadcrumbs */
.nv-crumbs{background:var(--lav-l);padding:10px 0;font-size:.8rem;color:var(--txt-3)}
.nv-crumbs a{color:var(--pri)}
.nv-crumbs i{margin:0 5px;font-style:normal}

/* footer */
.nv-foot{background:var(--dk);color:rgba(255,255,255,.6);padding:40px 0 0;text-align:center}
.nv-foot-links{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 20px;margin-bottom:12px}
.nv-foot-links a{color:rgba(255,255,255,.6);font-size:.88rem}
.nv-foot-links a:hover{color:var(--pri-xl)}
.nv-foot-links2{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 16px;margin-bottom:22px}
.nv-foot-links2 a{color:rgba(255,255,255,.4);font-size:.82rem}
.nv-foot-disc{max-width:860px;margin:0 auto;padding:20px;font-size:.73rem;color:rgba(255,255,255,.35);line-height:1.7;border-top:1px solid rgba(107,70,193,.1)}
.nv-foot-disc strong{color:rgba(255,255,255,.5)}
.nv-foot-disc a{color:var(--pri-xl)}
.nv-foot-btm{padding:16px 0;font-size:.75rem;color:rgba(255,255,255,.25);border-top:1px solid rgba(107,70,193,.06)}
.nv-foot-tag{font-size:.72rem;color:rgba(255,255,255,.18);padding-bottom:12px}

/* reveal */
.nv-r{opacity:0;transform:translateY(16px);transition:opacity .55s,transform .55s}
.nv-r.vis{opacity:1;transform:none}

/* responsive */
@media(max-width:991px){
  .nv-nav{display:none}
  .nv-burger{display:flex}
  .nv-hero-grid,.nv-split,.nv-benefits-grid{grid-template-columns:1fr}
  .nv-hero-grid{text-align:center}
  .nv-hero-media{order:-1}
  .nv-hero-acts,.nv-hero-chips,.nv-hero-stats{justify-content:center}
  .nv-mech,.nv-sci-grid,.nv-pricing,.nv-reviews{grid-template-columns:1fr}
  .nv-adv-grid{grid-template-columns:1fr}
  .nv-benefits-panel{padding:28px 18px}
  .nv-hero-media img{max-height:300px}
  .nv-foot-links,.nv-foot-links2{flex-direction:column;align-items:center}
  .nv-blog-links{columns:1}
}
@media(max-width:575px){
  .nv-sec{padding:48px 0}
  .nv-hero{padding:40px 0 48px}
  .nv-hero-tag{display:none}
  .nv-trust-in{gap:14px}
  .nv-trust-in img{height:30px}
}