/* ==========================================================================
   Healthy Nerve Guide — Shared Design System
   Nerve health / neuropathy affiliate blog
   ========================================================================== */

:root{
  --teal-900:#0f3d3a;
  --teal-800:#115e59;
  --teal-700:#0f766e;
  --teal-600:#0d9488;
  --teal-500:#14b8a6;
  --teal-50:#f0fdfa;
  --ink:#1a2b32;
  --ink-soft:#3f5560;
  --muted:#6b7f88;
  --line:#e2eaec;
  --bg:#ffffff;
  --bg-soft:#f5f9f9;
  --amber:#f59e0b;
  --amber-dark:#d97706;
  --cta:#f97316;
  --cta-dark:#ea580c;
  --green:#16a34a;
  --red:#dc2626;
  --star:#f5a623;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 1px 3px rgba(16,58,54,.08),0 1px 2px rgba(16,58,54,.06);
  --shadow:0 10px 30px rgba(16,58,54,.10);
  --shadow-lg:0 24px 60px rgba(16,58,54,.16);
  --maxw:1200px;
  --font:"Segoe UI",Roboto,-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif;
  --serif:Georgia,"Times New Roman",serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  font-size:18px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-700);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;color:var(--teal-900);font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4.5vw,3.3rem);margin:.2em 0 .4em}
h2{font-size:clamp(1.55rem,3vw,2.3rem);margin:1.8em 0 .6em}
h3{font-size:clamp(1.2rem,2vw,1.5rem);margin:1.4em 0 .5em}
p{margin:0 0 1.1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.narrow{max-width:820px;margin:0 auto;padding:0 22px}

/* ---------- Top notice bar ---------- */
.topbar{background:var(--teal-900);color:#d6f2ee;font-size:.82rem;text-align:center;padding:8px 16px;letter-spacing:.02em}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 22px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--teal-900);font-size:1.18rem}
.brand:hover{text-decoration:none}
.brand-mark{width:40px;height:40px;flex:0 0 40px;border-radius:11px;background:linear-gradient(135deg,var(--teal-600),var(--teal-800));display:grid;place-items:center;box-shadow:var(--shadow-sm)}
.brand-mark svg{width:24px;height:24px}
.brand small{display:block;font-size:.62rem;font-weight:600;letter-spacing:.14em;color:var(--teal-600);text-transform:uppercase}
.nav-links{display:flex;gap:26px;align-items:center;font-size:.95rem;font-weight:600}
.nav-links a{color:var(--ink-soft)}
.nav-links a:hover{color:var(--teal-700);text-decoration:none}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle svg{width:28px;height:28px;stroke:var(--teal-900)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:800;font-size:1.05rem;
  padding:16px 34px;border-radius:60px;cursor:pointer;border:0;text-align:center;transition:transform .15s ease,box-shadow .15s ease;line-height:1.15}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-cta{background:linear-gradient(135deg,var(--cta),var(--cta-dark));color:#fff;box-shadow:0 10px 24px rgba(234,88,12,.35)}
.btn-cta:hover{box-shadow:0 16px 34px rgba(234,88,12,.45);color:#fff}
.btn-cta.big{font-size:1.25rem;padding:20px 46px}
.btn-teal{background:linear-gradient(135deg,var(--teal-600),var(--teal-800));color:#fff;box-shadow:var(--shadow-sm)}
.btn-teal:hover{color:#fff}
.btn-ghost{background:#fff;color:var(--teal-800);border:2px solid var(--teal-600)}
.btn-ghost:hover{background:var(--teal-50);color:var(--teal-800)}
.btn-block{display:flex;width:100%}
.cta-sub{font-size:.85rem;color:var(--muted);margin-top:10px;text-align:center}
.pulse{animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 10px 24px rgba(234,88,12,.35)}50%{box-shadow:0 10px 24px rgba(234,88,12,.35),0 0 0 14px rgba(249,115,22,.0)}70%{box-shadow:0 10px 24px rgba(234,88,12,.35),0 0 0 14px rgba(249,115,22,0)}100%{box-shadow:0 10px 24px rgba(234,88,12,.35)}}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(1100px 480px at 15% -10%,#e6f7f4 0%,transparent 60%),linear-gradient(180deg,#f5f9f9,#ffffff)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:64px 0 56px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--teal-50);color:var(--teal-700);font-weight:700;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;padding:7px 15px;border-radius:60px;margin-bottom:18px;border:1px solid #cbeae4}
.hero p.lead{font-size:1.22rem;color:var(--ink-soft);max-width:40ch}
.hero-media{position:relative}
.hero-media img{border-radius:var(--radius);box-shadow:var(--shadow-lg);margin:0 auto}
.hero-cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.trust-row{display:flex;gap:22px;flex-wrap:wrap;margin-top:26px;color:var(--muted);font-size:.9rem;font-weight:600}
.trust-row span{display:inline-flex;align-items:center;gap:7px}
.trust-row svg{width:18px;height:18px;fill:var(--green)}

/* ---------- Generic section ---------- */
section{padding:8px 0}
.section-pad{padding:52px 0}
.bg-soft{background:var(--bg-soft)}
.bg-teal{background:linear-gradient(160deg,var(--teal-800),var(--teal-900));color:#eafaf7}
.bg-teal h2,.bg-teal h3{color:#fff}
.section-head{text-align:center;max-width:720px;margin:0 auto 38px}
.section-head p{color:var(--ink-soft);font-size:1.1rem}
.kicker{color:var(--teal-600);font-weight:800;text-transform:uppercase;letter-spacing:.12em;font-size:.82rem;margin-bottom:8px}

/* ---------- Cards ---------- */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);transition:transform .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .ico{width:52px;height:52px;border-radius:13px;background:var(--teal-50);display:grid;place-items:center;margin-bottom:16px}
.card .ico svg{width:28px;height:28px;stroke:var(--teal-700);fill:none;stroke-width:2}
.card h3{margin-top:0}
.card p:last-child{margin-bottom:0}

/* ---------- Post cards (home hub) ---------- */
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s}
.post-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.post-thumb{aspect-ratio:16/10;position:relative;display:grid;place-items:center;overflow:hidden}
.post-thumb.tofu{background:linear-gradient(135deg,#cfeee8,#a7ddd3)}
.post-thumb.mofu{background:linear-gradient(135deg,#d8ead0,#b6d8a8)}
.post-thumb.bofu{background:linear-gradient(135deg,#ffe6cc,#ffcfa3)}
.post-thumb svg{width:74px;height:74px;opacity:.85}
.post-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.post-thumb img.contain{object-fit:contain;padding:14px;filter:drop-shadow(0 12px 22px rgba(120,60,20,.22))}
.article-hero{margin:6px 0 30px}
.article-hero img{width:100%;border-radius:var(--radius);box-shadow:var(--shadow);display:block}
.article-hero figcaption{text-align:center;color:var(--muted);font-size:.86rem;margin-top:10px}
.post-stage{position:absolute;top:12px;left:12px;background:rgba(255,255,255,.92);color:var(--teal-800);font-weight:800;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;padding:5px 11px;border-radius:60px}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.post-body h3{margin:0 0 10px;font-size:1.22rem}
.post-body p{color:var(--ink-soft);font-size:.98rem}
.post-link{margin-top:auto;font-weight:800;color:var(--teal-700);display:inline-flex;align-items:center;gap:6px}
.post-link svg{width:16px;height:16px}

/* ---------- Article layout ---------- */
.article{padding:40px 0 20px}
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--teal-700)}
.article h1{margin-top:.1em}
.article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:.92rem;margin:6px 0 26px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#c3d2d5}
.article-body{font-size:1.09rem}
.article-body h2{scroll-margin-top:90px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.3em}
.article-body li{margin-bottom:.55em}
.article-body img{border-radius:var(--radius);box-shadow:var(--shadow-sm);margin:26px auto}
.figure{margin:28px 0}
.figure figcaption{text-align:center;color:var(--muted);font-size:.86rem;margin-top:10px}
.lead-para{font-size:1.22rem;color:var(--ink-soft)}

/* ---------- Answer block (AEO/GEO) ---------- */
.answer-block{background:var(--teal-50);border:1px solid #bfe6df;border-left:5px solid var(--teal-600);border-radius:var(--radius-sm);padding:22px 26px;margin:26px 0}
.answer-block .lbl{display:inline-flex;align-items:center;gap:8px;font-weight:800;color:var(--teal-700);text-transform:uppercase;letter-spacing:.08em;font-size:.76rem;margin-bottom:8px}
.answer-block .lbl svg{width:16px;height:16px}
.answer-block p{margin:0;font-size:1.06rem;color:var(--ink)}
.answer-block p+p{margin-top:.7em}

/* ---------- Callout / key takeaways ---------- */
.callout{background:#fff8ee;border:1px solid #f6e0b8;border-radius:var(--radius-sm);padding:22px 26px;margin:26px 0}
.callout h4{margin:0 0 10px;color:var(--amber-dark);display:flex;align-items:center;gap:9px}
.callout ul{margin:0;padding-left:1.2em}
.callout li{margin-bottom:.4em}

/* ---------- Tables ---------- */
.table-scroll{overflow-x:auto;margin:26px 0;border-radius:var(--radius-sm);box-shadow:var(--shadow-sm)}
table{border-collapse:collapse;width:100%;font-size:.98rem;background:#fff;min-width:520px}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--teal-800);color:#fff;font-weight:700}
tbody tr:nth-child(even){background:var(--bg-soft)}
td .yes{color:var(--green);font-weight:800}
td .no{color:var(--red);font-weight:800}

/* ---------- In-content CTA box ---------- */
.cta-box{background:linear-gradient(160deg,#fff4ea,#ffe9d6);border:1px solid #f7d5b3;border-radius:var(--radius);padding:30px;margin:34px 0;text-align:center}
.cta-box h3{margin-top:0;color:var(--cta-dark)}
.cta-box .btn{margin-top:8px}

/* ---------- Review specifics ---------- */
.review-hero{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:center;background:linear-gradient(180deg,#f5f9f9,#fff);border:1px solid var(--line);border-radius:var(--radius);padding:34px;margin:14px 0 34px;box-shadow:var(--shadow-sm)}
.review-hero img{border-radius:var(--radius-sm)}
.rating{display:flex;align-items:center;gap:12px;margin:14px 0}
.stars{color:var(--star);font-size:1.5rem;letter-spacing:2px}
.rating .score{font-weight:800;font-size:1.4rem;color:var(--teal-900)}
.rating .score small{font-weight:600;color:var(--muted);font-size:.9rem}
.score-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 26px;margin:18px 0}
.score-row{display:flex;flex-direction:column;gap:5px}
.score-row .top{display:flex;justify-content:space-between;font-size:.9rem;font-weight:700;color:var(--ink-soft)}
.bar{height:9px;border-radius:60px;background:var(--line);overflow:hidden}
.bar>span{display:block;height:100%;border-radius:60px;background:linear-gradient(90deg,var(--teal-500),var(--teal-700))}
.verdict{background:linear-gradient(160deg,var(--teal-800),var(--teal-900));color:#eafaf7;border-radius:var(--radius);padding:32px;margin:34px 0}
.verdict h3{color:#fff;margin-top:0}
.verdict .score-badge{display:inline-flex;flex-direction:column;align-items:center;background:rgba(255,255,255,.12);border-radius:14px;padding:14px 22px;margin-bottom:14px}
.verdict .score-badge b{font-size:2.2rem;line-height:1}
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:30px 0}
.pc{border-radius:var(--radius);padding:24px;border:1px solid var(--line)}
.pc.pros{background:#f0fdf4;border-color:#bbf7d0}
.pc.cons{background:#fef2f2;border-color:#fecaca}
.pc h4{margin:0 0 14px;display:flex;align-items:center;gap:9px;font-size:1.15rem}
.pc.pros h4{color:#15803d}
.pc.cons h4{color:#b91c1c}
.pc ul{list-style:none;margin:0;padding:0}
.pc li{position:relative;padding-left:30px;margin-bottom:11px}
.pc li::before{position:absolute;left:0;top:0;font-weight:800}
.pc.pros li::before{content:"✔";color:var(--green)}
.pc.cons li::before{content:"✕";color:var(--red)}

/* ---------- Ingredient grid ---------- */
.ing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ing-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:center;box-shadow:var(--shadow-sm)}
.ing-card img{width:96px;height:96px;border-radius:50%;margin:0 auto 14px;object-fit:cover;box-shadow:var(--shadow-sm)}
.ing-card h4{margin:.2em 0 .4em;font-size:1.12rem}
.ing-card p{font-size:.92rem;color:var(--ink-soft);margin:0}

/* ---------- Pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{position:relative;background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:28px 24px;text-align:center;box-shadow:var(--shadow-sm);display:flex;flex-direction:column}
.price-card.featured{border-color:var(--cta);box-shadow:var(--shadow)}
.price-tag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--cta);color:#fff;font-weight:800;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;padding:6px 16px;border-radius:60px;white-space:nowrap}
.price-card img{height:150px;width:auto;margin:8px auto 16px;object-fit:contain}
.price-card .pk{font-weight:800;color:var(--teal-900);font-size:1.15rem}
.price-card .per{font-size:2.6rem;font-weight:800;color:var(--teal-800);line-height:1;margin:10px 0 2px}
.price-card .per small{font-size:.9rem;color:var(--muted);font-weight:600}
.price-card .old{color:var(--muted);font-size:.95rem}
.price-card .btn{margin-top:auto}
.price-card ul{list-style:none;padding:0;margin:14px 0;font-size:.9rem;color:var(--ink-soft);text-align:left}
.price-card li{padding-left:24px;position:relative;margin-bottom:7px}
.price-card li::before{content:"✔";position:absolute;left:0;color:var(--green);font-weight:800}

/* ---------- Guarantee ---------- */
.guarantee{display:grid;grid-template-columns:170px 1fr;gap:26px;align-items:center;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:var(--radius);padding:28px}
.guarantee img{width:100%}

/* ---------- FAQ ---------- */
.faq{max-width:840px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-sm)}
.faq summary{list-style:none;cursor:pointer;padding:20px 24px;font-weight:700;color:var(--teal-900);display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:1.05rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.7rem;color:var(--teal-600);font-weight:400;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .faq-a{padding:0 24px 22px;color:var(--ink-soft)}
.faq .faq-a p:last-child{margin-bottom:0}

/* ---------- Author / E-E-A-T box ---------- */
.author-box{display:flex;gap:20px;align-items:flex-start;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:40px 0}
.author-avatar{width:74px;height:74px;flex:0 0 74px;border-radius:50%;background:linear-gradient(135deg,var(--teal-500),var(--teal-800));display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.6rem}
.author-box h4{margin:0 0 4px}
.author-box .role{color:var(--teal-700);font-weight:700;font-size:.9rem;margin-bottom:8px}
.author-box p{font-size:.94rem;color:var(--ink-soft);margin:0}

/* ---------- Related / next step ---------- */
.next-step{background:var(--bg-soft);border-radius:var(--radius);padding:30px;margin:36px 0;border:1px solid var(--line)}
.next-step .kicker{margin-bottom:6px}
.next-links{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:16px}
.next-links a{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 18px;color:var(--ink);font-weight:700;box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .15s}
.next-links a:hover{text-decoration:none;transform:translateY(-3px);box-shadow:var(--shadow)}
.next-links .arw{margin-left:auto;color:var(--teal-600)}

/* ---------- TOC ---------- */
.toc{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;margin:26px 0}
.toc strong{display:block;color:var(--teal-900);margin-bottom:10px;font-size:.95rem;text-transform:uppercase;letter-spacing:.06em}
.toc ol{margin:0;padding-left:1.3em;columns:2;column-gap:32px}
.toc a{color:var(--ink-soft);font-weight:600}

/* ---------- Disclosure ---------- */
.disclosure{background:#fbfbf9;border:1px dashed #d9e0e2;border-radius:var(--radius-sm);padding:14px 18px;font-size:.82rem;color:var(--muted);margin:20px 0}

/* ---------- Footer ---------- */
.site-footer{background:var(--teal-900);color:#bfe0da;padding:52px 0 26px;margin-top:60px;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.site-footer h5{color:#fff;font-size:.95rem;letter-spacing:.05em;text-transform:uppercase;margin:0 0 14px}
.site-footer a{color:#bfe0da;display:block;margin-bottom:9px}
.site-footer a:hover{color:#fff}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-weight:800;font-size:1.15rem;margin-bottom:14px}
.footer-legal{border-top:1px solid rgba(255,255,255,.14);margin-top:34px;padding-top:22px;font-size:.8rem;color:#8fbdb5;line-height:1.6}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:34px;padding:44px 0 40px}
  .hero-media{order:-1;max-width:420px;margin:0 auto}
  .review-hero{grid-template-columns:1fr;text-align:center}
  .review-hero img{max-width:320px;margin:0 auto}
  .grid-3,.posts,.ing-grid,.price-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  body{font-size:17px}
  .nav-links{position:fixed;inset:64px 0 auto 0;background:#fff;flex-direction:column;gap:0;padding:8px 22px 22px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 0;width:100%;border-bottom:1px solid var(--line)}
  .nav-toggle{display:block}
  .grid-3,.grid-2,.posts,.ing-grid,.price-grid,.proscons,.score-grid,.next-links,.footer-grid{grid-template-columns:1fr}
  .guarantee{grid-template-columns:1fr;text-align:center}
  .guarantee img{max-width:150px;margin:0 auto}
  .toc ol{columns:1}
  .btn{width:100%}
  .hero-cta-row .btn{width:100%}
}