:root{
  --bg:#ffffff;
  --surface:#ffffff;
  --surface-soft:#f7fbff;
  --surface-blue:#edf6ff;
  --surface-blue-2:#e6f2ff;
  --ink:#10223a;
  --heading:#0b1f36;
  --muted:#61748c;
  --line:#dbe7f3;
  --blue:#0f73d9;
  --blue-2:#2a8cf0;
  --blue-dark:#0a56aa;
  --cyan:#22a8e8;
  --green:#1f9d6a;
  --amber:#d99216;
  --red:#d84c5f;
  --shadow:0 16px 45px rgba(31,77,121,.10);
  --shadow-lg:0 28px 70px rgba(31,77,121,.14);
  --radius:20px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:#fff}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#fff;color:var(--ink);line-height:1.72;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.wrap{width:min(var(--max),calc(100% - 36px));margin:auto}
.progress{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--cyan));z-index:250;width:0;box-shadow:0 0 14px rgba(15,115,217,.28)}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid #e5eef7;box-shadow:0 4px 18px rgba(45,86,128,.045)}
.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:11px;font-weight:900;letter-spacing:-.03em;color:var(--heading)}
.brand-mark{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:#fff;border:1px solid #dfe9f3;box-shadow:0 8px 22px rgba(31,77,121,.10);overflow:hidden;flex:0 0 40px}
.brand-mark img{width:100%;height:100%;object-fit:cover;border-radius:11px;display:block}
.brand small{display:block;color:#6e8198;font-weight:700;font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;margin-top:1px}
.navlinks{display:flex;align-items:center;gap:16px;color:#3f5570;font-size:12.5px;white-space:nowrap;font-weight:700}
.navlinks a{position:relative;padding:29px 0 26px}
.navlinks a:after{content:"";position:absolute;left:0;right:100%;bottom:19px;height:2px;background:var(--blue);transition:.22s}
.navlinks a:hover{color:var(--blue)}
.navlinks a:hover:after{right:0}
.header-actions{display:flex;gap:10px;align-items:center}
.icon-btn{border:1px solid #d7e4f0;background:#fff;color:#24415e;border-radius:11px;padding:10px 12px;cursor:pointer;box-shadow:0 4px 14px rgba(31,77,121,.05)}
.icon-btn:hover{border-color:#a9cbea;color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:11px;padding:13px 18px;font-weight:850;border:1px solid transparent;transition:.22s transform,.22s box-shadow,.22s background,.22s border-color;line-height:1.15}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,#0f73d9,#2698ef);color:#fff;box-shadow:0 10px 24px rgba(15,115,217,.22)}
.btn-primary:hover{box-shadow:0 14px 30px rgba(15,115,217,.28)}
.btn-ghost{border-color:#cfdfea;background:#fff;color:#22445f}
.mobile-menu{display:none}

/* Page hero */
.page-hero{padding:62px 0 40px;border-bottom:1px solid #dfeaf5;position:relative;overflow:hidden;background:linear-gradient(180deg,#f7fbff 0%,#ffffff 100%)}
.page-hero:before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-240px;top:-330px;background:radial-gradient(circle,#cfe8ff 0%,rgba(207,232,255,.18) 44%,transparent 68%);pointer-events:none}
.page-hero:after{content:"";position:absolute;width:230px;height:230px;border-radius:50%;left:-120px;bottom:-150px;background:radial-gradient(circle,#e6f4ff,transparent 70%);pointer-events:none}
.breadcrumbs{position:relative;z-index:1;font-size:13px;color:#7588a0;display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.breadcrumbs a{color:#466987;font-weight:700}
.breadcrumbs a:hover{color:var(--blue)}
.hero-meta{position:relative;z-index:1;display:flex;gap:9px;flex-wrap:wrap;margin-bottom:16px}
.pill{display:inline-flex;padding:7px 11px;border:1px solid #cfe0f0;border-radius:999px;color:#47657f;background:#fff;font-size:12px;font-weight:700;box-shadow:0 4px 14px rgba(31,77,121,.04)}
.page-hero h1{position:relative;z-index:1;font-size:clamp(38px,5.6vw,66px);line-height:1.04;letter-spacing:-.052em;margin:0;max-width:980px;color:var(--heading)}
.page-hero .lede{position:relative;z-index:1;font-size:18px;color:#60748c;max-width:840px;margin:20px 0 0;line-height:1.65}
.disclosure-strip{border-bottom:1px solid #e1ebf5;background:#fbfdff}
.disclosure-strip .wrap{padding:10px 0;color:#6c7f94;font-size:12px;display:flex;align-items:center;gap:10px}

/* Main article shell */
.main-grid{display:grid;grid-template-columns:minmax(0,1fr) 295px;gap:44px;padding:48px 0 88px}
.article{min-width:0}
.toc{position:sticky;top:98px;border:1px solid #dce8f3;background:#fff;border-radius:16px;padding:19px;box-shadow:var(--shadow)}
.toc strong{font-size:11px;text-transform:uppercase;letter-spacing:.13em;color:#71849b}
.toc a{display:block;padding:9px 0;color:#49627c;font-size:13.5px;border-bottom:1px solid #edf2f7;font-weight:650}
.toc a:hover{color:var(--blue)}
.toc a:last-child{border:0}
.content-section{padding:31px 0;border-bottom:1px solid #e7eef6}
.content-section:first-child{padding-top:0}
.section-kicker,.eyebrow{display:inline-block;font-size:10.5px;letter-spacing:.17em;text-transform:uppercase;font-weight:900;color:var(--blue);margin-bottom:10px}
.content-section h2{font-size:clamp(28px,4vw,41px);line-height:1.13;letter-spacing:-.035em;margin:0 0 17px;color:var(--heading)}
.content-section h3{line-height:1.28;color:#16324e}
.content-section p{color:#526981;margin-top:0}
.content-section a:not(.btn):not(.related-card){color:#0f69c0;text-decoration:underline;text-decoration-color:#b9d8f4;text-underline-offset:3px}
.content-section a:not(.btn):not(.related-card):hover{color:#084e96}

/* Homepage review lead */
.hero-review-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:30px;align-items:center}
.verdict-card{padding:27px;border:1px solid #cfe0ef;background:linear-gradient(145deg,#ffffff,#f5faff);border-radius:22px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.verdict-card:before{content:"";position:absolute;inset:0 auto auto 0;width:100%;height:4px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.verdict-score{display:flex;gap:12px;align-items:center;margin-bottom:18px}
.verdict-score span{font-size:11px;color:#71849a;text-transform:uppercase;letter-spacing:.12em;font-weight:800}
.verdict-score strong{padding:6px 10px;background:#edf9f4;color:#19855d;border:1px solid #c9ecdd;border-radius:999px;font-size:12px}
.product-stage{position:relative;text-align:center;min-height:445px;display:grid;place-items:center;background:radial-gradient(circle at 50% 46%,#e9f5ff 0%,#f9fcff 44%,transparent 68%);border-radius:24px}
.product-stage img{position:relative;z-index:2;max-height:430px;filter:drop-shadow(0 28px 34px rgba(31,77,121,.20))}
.glow-orb{position:absolute;width:335px;height:335px;background:radial-gradient(circle,#cde8ff,transparent 68%);opacity:.85;filter:blur(4px)}
.image-note{position:absolute;bottom:8px;font-size:10px;color:#8194a8}
.facts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0}
.fact-card{padding:16px;background:#f8fbfe;border:1px solid #dce7f2;border-radius:14px}
.fact-card span{display:block;color:#77899e;font-size:10.5px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}
.fact-card strong{display:block;margin-top:5px;font-size:14px;color:#203a56}

/* Info boxes */
.notice{border:1px solid #c9e0f6;border-left:4px solid var(--blue);background:#f2f8ff;padding:16px 18px;border-radius:13px;margin:22px 0;color:#3d5c77}
.notice.warning{border-color:#f0dba8;border-left-color:var(--amber);background:#fffaf0;color:#6f5a2e}
.table-wrap{overflow-x:auto;border:1px solid #dce7f1;border-radius:15px;margin:18px 0;box-shadow:0 8px 24px rgba(31,77,121,.045)}
table{width:100%;border-collapse:collapse;min-width:650px;background:#fff}
th,td{text-align:left;padding:15px 16px;border-bottom:1px solid #e7eef5;vertical-align:top}
th{font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:#60758d;background:#f5f9fd;font-weight:900}
td{color:#4b6279;font-size:14px}
tr:last-child td{border-bottom:0}
.check-list{list-style:none;padding:0;margin:18px 0}
.check-list li{position:relative;padding:10px 0 10px 31px;color:#4c657d}
.check-list li:before{content:"✓";position:absolute;left:0;top:9px;width:20px;height:20px;display:grid;place-items:center;border-radius:50%;background:#e9f8f1;color:var(--green);font-size:12px;font-weight:900}
.cta-panel{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px;margin:26px 0;border-radius:18px;border:1px solid #cbe1f5;background:linear-gradient(135deg,#eef7ff,#f9fcff);box-shadow:0 12px 32px rgba(31,77,121,.08)}
.cta-panel h3{margin:0 0 4px;color:var(--heading)}
.cta-panel p{margin:0;font-size:13px;max-width:620px;color:#5b7289}
.evidence-ladder{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.evidence-ladder>div{padding:20px;border-radius:16px;border:1px solid #dbe7f2;background:#fbfdff}
.evidence-ladder span{font-size:10.5px;color:var(--blue);letter-spacing:.1em;text-transform:uppercase;font-weight:900}
.evidence-ladder strong{display:block;margin:7px 0;color:#1b3854}
.split-cards,.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.soft-card,.pros-cons>div{border:1px solid #dce7f1;border-radius:17px;padding:20px;background:#fff;box-shadow:0 8px 22px rgba(31,77,121,.045)}

/* Related and cluster cards */
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}
.related-card{border:1px solid #dce7f2;border-radius:15px;padding:18px;background:#fff;transition:.22s;box-shadow:0 7px 20px rgba(31,77,121,.04)}
.related-card:hover{border-color:#a9cef0;transform:translateY(-3px);box-shadow:0 14px 30px rgba(31,77,121,.09)}
.related-card span{display:block;color:var(--blue);font-size:9.5px;text-transform:uppercase;letter-spacing:.13em;font-weight:900}
.related-card strong{display:block;margin:5px 0 12px;color:#173652;font-size:16px}
.related-card b{font-size:12px;color:#64809a}
#nervovive-cluster-v2{background:linear-gradient(180deg,#f8fbfe,#eef7ff);border-top:1px solid #dfeaf5;border-bottom:1px solid #dfeaf5;padding:58px 0}
#nervovive-cluster-v2>.wrap{width:min(var(--max),calc(100% - 36px))}
#nervovive-cluster-v2 h2{max-width:820px}
#nervovive-cluster-v2 .related-grid{grid-template-columns:repeat(3,1fr);gap:14px}

/* Author / source / contact */
.author-box{display:flex;gap:15px;border:1px solid #dce7f1;border-radius:16px;padding:18px;margin-top:20px;background:#fbfdff}
.author-avatar{width:48px;height:48px;flex:0 0 48px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font-weight:900}
.author-box p{margin:4px 0 0;font-size:13px;color:#5b7187}
.microcopy{font-size:12px!important;color:#7c8fa4!important}
.steps{list-style:none;padding:0;counter-reset:step}
.steps li{counter-increment:step;display:grid;grid-template-columns:42px 1fr;column-gap:12px;padding:16px 0;border-bottom:1px solid #e6edf4}
.steps li:before{content:counter(step);grid-row:1/3;width:36px;height:36px;display:grid;place-items:center;border-radius:11px;background:#eaf4ff;color:var(--blue);font-weight:900}
.steps li span{grid-column:2;color:#6c7f93;font-size:13px}
.address-card,.contact-card{padding:22px;border:1px solid #dce7f1;background:#fbfdff;border-radius:17px}
.source-list article{display:grid;grid-template-columns:50px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid #e6edf4}
.source-list article>span{font-size:13px;color:var(--blue);font-weight:900}
.source-list h3{margin:0;color:#1a3652}
.source-list p{margin:7px 0}
.source-list code{display:block;max-width:100%;overflow:auto;color:#72879d;font-size:11px;background:#f4f8fc;padding:7px;border-radius:8px}

/* FAQs / tools */
.faq-page-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.faq-page-grid article{padding:20px;border:1px solid #dce7f1;border-radius:16px;background:#fff;box-shadow:0 8px 22px rgba(31,77,121,.04)}
.faq-page-grid h2{font-size:20px}
.faq-block{margin-top:34px}
.faq-item{border-top:1px solid #e3ebf3;padding:16px 0}
.faq-q{width:100%;text-align:left;color:#17324c;background:none;border:0;font-size:16px;font-weight:850;display:flex;justify-content:space-between;cursor:pointer;padding:0}
.faq-q span{color:var(--blue)}
.faq-a{display:none;color:#60748a;padding-top:10px}
.faq-item.open .faq-a{display:block}
.tool-card{display:grid;gap:10px;border:1px solid #dce7f1;padding:22px;border-radius:18px;background:#fbfdff}
.tool-card label{padding:12px;border:1px solid #dce7f1;border-radius:11px;cursor:pointer;background:#fff;color:#455f78}
.tool-card input{margin-right:10px}
.tool-result{margin-top:10px;padding:18px;border-radius:14px;background:#eef7ff;border:1px solid #cbe1f5}
.tool-result span{font-size:11px;text-transform:uppercase;color:#6d8298}
.tool-result strong{display:block;font-size:32px;color:#16416b}
.notfound{text-align:center;padding:130px 20px}
.notfound>span{font-size:100px;font-weight:900;color:#d5e9fb}
.notfound h1{color:var(--heading)}
.notfound p{color:var(--muted)}

/* Product media */
.media-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:20px 0}
.media-card{margin:0;border:1px solid #dce7f1;border-radius:20px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.media-card img{display:block;width:100%;height:auto;object-fit:contain;background:#fff}
.media-card figcaption{padding:11px 14px;color:#75899f;font-size:11px;border-top:1px solid #e2ebf3;background:#fbfdff}
.media-wide{max-width:880px;margin:20px auto}
.light-media{background:#eef6ff}
.media-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:26px;align-items:center;margin:18px 0}
.media-split .media-card{box-shadow:0 18px 45px rgba(31,77,121,.10)}

/* Footer */
.site-footer{border-top:1px solid #dfe9f3;background:#f7fbff;padding:52px 0 96px;color:#3f5872}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:30px}
.site-footer h4{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:#6e8197;margin-bottom:13px}
.site-footer a{display:block;padding:4px 0;color:#4f6880;font-size:13px}
.site-footer a:hover{color:var(--blue)}
.site-footer p[style]{color:#71849a!important}
.footer-note{margin-top:28px;padding-top:22px;border-top:1px solid #dfe8f1;font-size:11px;color:#8091a3}

/* Search */
.search-modal{position:fixed;inset:0;z-index:300;background:rgba(10,30,50,.32);backdrop-filter:blur(10px);display:none}
.search-modal.open{display:block}
.search-box{width:min(760px,calc(100% - 30px));margin:90px auto;background:#fff;border:1px solid #dce7f1;border-radius:20px;box-shadow:0 28px 80px rgba(22,56,88,.22);overflow:hidden}
.search-top{display:flex;padding:14px;border-bottom:1px solid #e4ecf4}
.search-top input{flex:1;background:transparent;border:0;color:#18324d;font-size:18px;outline:0;padding:10px}
.search-results{max-height:65vh;overflow:auto;padding:12px}
.search-result{display:block;padding:13px;border-radius:11px}
.search-result:hover{background:#f3f8fd}
.search-result strong{display:block;color:#17344f}
.search-result span{font-size:12px;color:#71859a}
.mobile-bottom{display:none}
.reveal{opacity:0;transform:translateY(12px);transition:.5s}
.reveal.visible{opacity:1;transform:none}

@media(max-width:1080px){.navlinks{gap:12px;font-size:11.5px}.header-actions .btn{padding:12px 14px}}
@media(max-width:980px){
  .navlinks{display:none}.mobile-menu{display:block}.main-grid{grid-template-columns:1fr}.toc{position:relative;top:auto}.hero-review-grid{grid-template-columns:1fr}.product-stage{min-height:350px}.footer-grid{grid-template-columns:1fr 1fr}.facts-grid{grid-template-columns:repeat(2,1fr)}.cta-panel{align-items:flex-start;flex-direction:column}#nervovive-cluster-v2 .related-grid{grid-template-columns:repeat(2,1fr)}
  .mobile-bottom{position:fixed;display:flex;bottom:0;left:0;right:0;z-index:120;padding:10px 14px;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);border-top:1px solid #dce7f1;box-shadow:0 -8px 24px rgba(31,77,121,.08)}.mobile-bottom .btn{width:100%}
}
@media(max-width:760px){.media-grid,.media-split{grid-template-columns:1fr}.media-split>div{order:1}.media-split>figure{order:0}.media-card{border-radius:16px}}
@media(max-width:640px){
  .wrap{width:min(100% - 24px,var(--max))}.page-hero{padding-top:42px}.page-hero h1{font-size:39px}.facts-grid,.related-grid,.evidence-ladder,.split-cards,.pros-cons,.faq-page-grid,.footer-grid,#nervovive-cluster-v2 .related-grid{grid-template-columns:1fr}.header-actions .btn{display:none}.content-section{padding:25px 0}.table-wrap{border-radius:12px}.site-footer{padding-bottom:100px}.brand{font-size:14px}.brand small{font-size:8.5px}.product-stage{min-height:300px}.verdict-card{padding:21px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.reveal{opacity:1;transform:none}}