/* Gum Disease Care Guide — site styles */
:root{
  --bg:#fbfaf7; --surface:#ffffff; --ink:#0f1a1c; --ink-2:#324449; --muted:#5b6b70;
  --line:#e6e2d8; --line-2:#efece3;
  --brand:#0f766e; --brand-2:#134e4a; --brand-soft:#e6f4f2; --brand-ink:#0b3b38;
  --accent:#c46a2c; --accent-soft:#fbeadb;
  --warn:#a15c00; --warn-soft:#fff3e0;
  --danger:#a3341f; --danger-soft:#fbe5df;
  --ok:#2f7a3b; --ok-soft:#e6f2e5;
  --radius:14px; --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(20,40,45,.06);
  --shadow:0 8px 24px rgba(20,40,45,.08);
  --max:1140px;
  --serif:"Iowan Old Style","Palatino Linotype",Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-2);text-decoration:none;text-underline-offset:3px}
a:hover{text-decoration:underline}
.visually-hidden{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:-9999px;top:0;background:var(--brand);color:#fff;padding:.5rem .75rem;z-index:100}
.skip:focus{left:1rem;top:1rem;border-radius:8px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}

/* Header */
.site-header{background:#fffefb;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:.9rem 1.25rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{color:var(--brand);display:inline-flex;align-items:center;justify-content:center;background:var(--brand-soft);width:44px;height:44px;border-radius:12px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-family:var(--serif);font-size:1.05rem;letter-spacing:.2px}
.brand-text span{font-size:.72rem;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}
.primary-nav ul{list-style:none;display:flex;gap:1.2rem;margin:0;padding:0}
.primary-nav a{color:var(--ink-2);font-size:.94rem;padding:.4rem 0;border-bottom:2px solid transparent}
.primary-nav a:hover{color:var(--brand-2);text-decoration:none}
.primary-nav a[aria-current="page"]{color:var(--brand-2);border-bottom-color:var(--brand)}
.nav-toggle{display:none;background:transparent;border:1px solid var(--line);border-radius:10px;padding:.5rem;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0;border-radius:2px}

/* Breadcrumbs */
.crumbs{background:#f5f1e6;border-bottom:1px solid var(--line);font-size:.85rem;color:var(--muted)}
.crumbs .wrap{padding:.55rem 1.25rem}
.crumbs a{color:var(--ink-2)}
.crumbs span[aria-current]{color:var(--ink);font-weight:500}

/* Buttons */
.btn{display:inline-block;padding:.7rem 1.15rem;border-radius:10px;font-weight:600;font-size:.95rem;border:1px solid transparent;transition:transform .1s ease}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-2)}

/* Hero variants */
.hero{padding:4rem 0 3rem;position:relative}
.hero .eyebrow{color:var(--brand);font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;margin:0 0 .8rem}
.hero-title{font-family:var(--serif);font-weight:600;font-size:clamp(2rem,4.5vw,3.4rem);line-height:1.1;margin:0 0 1rem;color:var(--ink)}
.hero-sub{font-size:1.12rem;max-width:640px;color:var(--ink-2);margin:0 0 1.6rem}
.hero-ctas{display:flex;gap:.7rem;flex-wrap:wrap}
.hero-default{background:linear-gradient(180deg,#fffefb 0%,var(--bg) 100%)}
.hero-brand{background:radial-gradient(1200px 400px at 20% 0%,#d6ede9 0%,transparent 60%),#f4efe2}
.hero-quiet{background:#fffefb;border-bottom:1px solid var(--line)}
.hero-legal{background:#f2ede1;padding:3rem 0 2rem;border-bottom:1px solid var(--line)}
.hero-legal .hero-title{font-size:clamp(1.7rem,3vw,2.3rem)}

/* Prose */
.prose{max-width:760px;margin:2.5rem auto;padding:0 1.25rem;font-size:1.05rem}
.prose.wide{max-width:960px}
.prose h2{font-family:var(--serif);font-size:1.7rem;margin:2.4rem 0 .8rem;color:var(--ink);line-height:1.2}
.prose h3{font-family:var(--serif);font-size:1.25rem;margin:1.8rem 0 .6rem;color:var(--ink)}
.prose h4{font-size:1rem;margin:1.3rem 0 .4rem;color:var(--ink)}
.prose p{margin:0 0 1rem;color:var(--ink-2)}
.prose ul,.prose ol{padding-left:1.3rem;margin:.5rem 0 1.2rem;color:var(--ink-2)}
.prose li{margin-bottom:.4rem}
.prose blockquote{border-left:3px solid var(--brand);margin:1.5rem 0;padding:.4rem 0 .4rem 1.1rem;color:var(--ink);font-style:italic}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.2rem 0}
.prose table{width:100%;border-collapse:collapse;margin:1rem 0 1.5rem;font-size:.95rem}
.prose th,.prose td{border:1px solid var(--line);padding:.55rem .75rem;text-align:left;vertical-align:top}
.prose th{background:#f5f1e6}

/* Callouts */
.callout{border-radius:var(--radius);padding:1rem 1.1rem;margin:1.4rem 0;border:1px solid var(--line);background:#fff}
.callout h4{margin:0 0 .3rem;font-size:.95rem;letter-spacing:.02em}
.callout-tip{border-color:var(--brand);background:var(--brand-soft)}
.callout-tip h4{color:var(--brand-ink)}
.callout-warn{border-color:#e0b476;background:var(--warn-soft)}
.callout-warn h4{color:var(--warn)}
.callout-clinical{border-color:#c8b090;background:#faf4e7}
.callout-clinical h4{color:#7a5a1a}
.callout-danger{border-color:#e3a99b;background:var(--danger-soft)}
.callout-danger h4{color:var(--danger)}

.dyk{margin:1.5rem 0;background:#0f2a2b;color:#e9f4f2;border-radius:var(--radius-lg);padding:1.1rem 1.2rem;display:flex;gap:1rem;align-items:flex-start}
.dyk-tag{background:var(--accent);color:#fff;font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;padding:.25rem .55rem;border-radius:6px;font-weight:700;flex-shrink:0;margin-top:.2rem}
.dyk p{margin:0;font-size:.98rem}

/* TOC */
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem;margin:1.5rem 0;font-size:.94rem}
.toc h4{margin:0 0 .5rem;font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.toc ol{margin:0;padding-left:1.1rem;color:var(--ink-2)}
.toc a{color:var(--ink-2)}
.toc a:hover{color:var(--brand-2)}

/* FAQ accordion */
.faq-accordion details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:.9rem 1rem;margin-bottom:.6rem}
.faq-accordion summary{cursor:pointer;font-weight:600;color:var(--ink);list-style:none;position:relative;padding-right:1.5rem}
.faq-accordion summary::-webkit-details-marker{display:none}
.faq-accordion summary::after{content:"+";position:absolute;right:0;top:0;color:var(--brand);font-weight:600;font-size:1.2rem;line-height:1}
.faq-accordion details[open] summary::after{content:"–"}
.faq-accordion details>div{margin-top:.6rem;color:var(--ink-2)}

/* Card grid (features, resources) */
.card-grid{display:grid;gap:1rem;margin:1.5rem 0}
.card-grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card-grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card-grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.rcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;display:flex;flex-direction:column;gap:.4rem;color:var(--ink);transition:border-color .15s ease,transform .1s ease}
.rcard:hover{border-color:var(--brand);text-decoration:none;transform:translateY(-2px)}
.rcard h3{margin:0;font-size:1.05rem;font-family:var(--serif)}
.rcard p{margin:0;color:var(--muted);font-size:.92rem}
.rcard-icon{display:inline-flex;width:38px;height:38px;border-radius:10px;background:var(--brand-soft);color:var(--brand);align-items:center;justify-content:center;font-size:1.1rem}
.rcard-more{color:var(--brand);font-size:.85rem;font-weight:600;margin-top:auto}

/* Checklists, myth/fact */
.checklist{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.5rem 0}
.checklist h3{margin:0 0 .5rem;font-family:var(--serif)}
.checklist ol{padding-left:1.2rem;margin:0}
.checklist ol li{margin-bottom:.35rem;color:var(--ink-2)}

.mf-grid{display:grid;gap:.9rem;margin:1.5rem 0}
.mf{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.mf .myth,.mf .fact{padding:.9rem 1rem}
.mf .myth{background:#fbe5df}
.mf .fact{background:var(--ok-soft)}
.mf span{display:inline-block;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700;margin-bottom:.3rem}
.mf .myth span{color:var(--danger)}
.mf .fact span{color:var(--ok)}
.mf p{margin:0;color:var(--ink-2);font-size:.94rem}

/* Stats */
.stats{background:var(--brand-2);color:#e9f4f2;padding:2rem 0;margin:2rem 0}
.stats .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.5rem;text-align:center}
.stat b{display:block;font-family:var(--serif);font-size:2rem;color:#fff}
.stat span{font-size:.88rem;color:#b7d4d0}

/* Related */
.related{background:#f5f1e6;border-radius:var(--radius-lg);padding:1.4rem;margin:2rem 0}
.related h3{margin:0 0 .8rem;font-family:var(--serif);font-size:1.15rem}
.related ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:.6rem}
.related li a{display:block;background:#fff;padding:.75rem .9rem;border-radius:10px;border:1px solid var(--line-2);color:var(--ink)}
.related li a:hover{border-color:var(--brand);text-decoration:none}
.related li a span{display:block;font-weight:600;color:var(--ink)}
.related li a small{color:var(--muted)}

/* Article meta */
.article-meta{display:flex;gap:1.3rem;color:var(--muted);font-size:.88rem;margin:.6rem 0 1.2rem;flex-wrap:wrap;align-items:center}
.article-meta .author{color:var(--ink-2);font-weight:500}
.article-meta .dot{color:var(--line)}
.article-header{background:#f6f1e5;padding:2.6rem 0 2rem;border-bottom:1px solid var(--line)}
.article-header .wrap{max-width:820px}
.article-header .eyebrow{color:var(--brand);font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;margin:0 0 .6rem}
.article-header h2{font-family:var(--serif);font-size:clamp(1.8rem,3.3vw,2.6rem);line-height:1.15;margin:0 0 .7rem;color:var(--ink)}
.article-header .subtitle{font-size:1.1rem;color:var(--ink-2);margin:0}

/* Newsletter */
.newsletter{background:var(--brand-soft);border-top:1px solid #cfe4e1;border-bottom:1px solid #cfe4e1;margin-top:3rem}
.nl-inner{padding:2rem 1.25rem;display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;align-items:center}
.newsletter h2{margin:0 0 .3rem;font-family:var(--serif);color:var(--brand-ink);font-size:1.4rem}
.newsletter p{margin:0;color:var(--brand-ink);opacity:.85}
.nl-form{display:flex;gap:.5rem;flex-wrap:wrap;position:relative}
.nl-form input{flex:1;min-width:200px;padding:.75rem .9rem;border:1px solid #b6d4cf;background:#fff;border-radius:10px;font:inherit}
.nl-form button{padding:.75rem 1.15rem;border:0;background:var(--brand);color:#fff;border-radius:10px;font-weight:600;cursor:pointer}
.nl-form button:hover{background:var(--brand-2)}
.nl-ok{flex-basis:100%;color:var(--ok);margin:.3rem 0 0;font-size:.9rem}

/* Footer */
.site-footer{background:#0e1d1f;color:#c8d6d7;padding:3rem 0 1.5rem;margin-top:0}
.site-footer a{color:#e0eae9}
.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:1.6rem;padding-bottom:2rem;border-bottom:1px solid #1e3033}
.fcol h4{color:#fff;font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;margin:0 0 .7rem}
.fcol ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.35rem}
.fcol a{font-size:.9rem;color:#bccecf}
.brand-col address{font-style:normal;font-size:.92rem;line-height:1.6;color:#bccecf}
.fbrand{font-family:var(--serif);font-size:1.1rem;color:#fff;margin:0 0 .6rem}
.legal-row{display:flex;justify-content:space-between;align-items:center;padding:1.2rem 1.25rem;flex-wrap:wrap;gap:.7rem;font-size:.82rem;color:#8ea3a5}
.legal-links{list-style:none;padding:0;margin:0;display:flex;gap:1rem;flex-wrap:wrap}
.legal-links a{color:#8ea3a5}
.disclaimer{color:#7f9698;font-size:.78rem;padding:1rem 1.25rem 0;border-top:1px solid #1a2c2f}

/* Home-only */
.home-features{padding:3rem 0}
.home-features .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.hf{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem}
.hf .ico{color:var(--brand);font-weight:700;font-family:var(--serif);font-size:1.4rem}
.hf h3{margin:.4rem 0;font-family:var(--serif);font-size:1.15rem}
.hf p{color:var(--muted);margin:0;font-size:.94rem}

.split{display:grid;grid-template-columns:1.1fr .9fr;gap:2rem;align-items:center;padding:3rem 0}
.split .wrap{display:contents}
.split .col-a,.split .col-b{padding:0 1.25rem}
.split .col-a h2{font-family:var(--serif);font-size:1.9rem;margin:0 0 .8rem}
.split .col-b{background:#f4efe2;border-radius:var(--radius-lg);padding:1.8rem}
.split ul{padding-left:1.1rem;color:var(--ink-2)}

.trust-band{background:#fffefb;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:2rem 0}
.trust-band .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.4rem;text-align:center;color:var(--muted);font-size:.85rem}
.trust-band strong{display:block;color:var(--ink);font-family:var(--serif);font-size:1rem;margin-bottom:.15rem}

/* Article list (blog) */
.article-list{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin:2rem 0}
.article-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem;display:flex;flex-direction:column;gap:.5rem;color:var(--ink)}
.article-card:hover{border-color:var(--brand);text-decoration:none;transform:translateY(-2px);transition:all .15s}
.article-card .tag{display:inline-block;background:var(--brand-soft);color:var(--brand-ink);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;padding:.2rem .5rem;border-radius:6px;font-weight:600;align-self:flex-start}
.article-card h3{margin:.3rem 0 .1rem;font-family:var(--serif);font-size:1.15rem;line-height:1.25}
.article-card p{color:var(--muted);font-size:.92rem;margin:0}
.article-card .meta{color:var(--muted);font-size:.8rem;margin-top:auto;padding-top:.6rem;border-top:1px solid var(--line-2)}

/* Two-column article layout */
.article-wrap{max-width:1080px;margin:2.4rem auto 3rem;padding:0 1.25rem;display:grid;grid-template-columns:1fr 260px;gap:2.5rem;align-items:start}
.article-body{font-size:1.06rem}
.article-body h2{font-family:var(--serif);font-size:1.7rem;margin:2.3rem 0 .8rem}
.article-body h3{font-family:var(--serif);font-size:1.25rem;margin:1.8rem 0 .6rem}
.article-body p{color:var(--ink-2);margin:0 0 1rem}
.article-body figure{margin:1.4rem 0}
.article-side{position:sticky;top:80px}
.article-side .toc{margin-top:0}

/* Contact page */
.contact-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:2rem;margin:2rem 0}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem}
.contact-form label{display:block;margin-bottom:.9rem}
.contact-form label span{display:block;font-size:.85rem;color:var(--ink-2);margin-bottom:.3rem;font-weight:500}
.contact-form input,.contact-form select,.contact-form textarea{width:100%;padding:.65rem .8rem;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fffefb}
.contact-form textarea{min-height:130px;resize:vertical}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
.contact-form .err{color:var(--danger);font-size:.82rem;margin-top:.2rem;display:none}
.contact-form .err.on{display:block}
.contact-form button{background:var(--brand);color:#fff;border:0;padding:.75rem 1.3rem;border-radius:10px;font-weight:600;cursor:pointer}
.contact-form .ok{color:var(--ok);background:var(--ok-soft);padding:.9rem;border-radius:10px;margin-bottom:1rem}
.contact-info{background:#f5f1e6;border-radius:var(--radius);padding:1.4rem}
.contact-info h3{font-family:var(--serif);margin:0 0 .5rem;font-size:1.1rem}
.contact-info+.contact-info{margin-top:1rem}
.map-embed{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);margin:2rem 0}
.map-embed iframe{display:block;width:100%;height:360px;border:0}

/* Search page */
.search-tools{display:flex;gap:.6rem;margin:1rem 0 2rem}
.search-tools input{flex:1;padding:.75rem 1rem;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
.search-tools button{background:var(--brand);color:#fff;border:0;padding:.75rem 1.3rem;border-radius:10px;font-weight:600;cursor:pointer}
#search-results{display:grid;gap:.8rem}
#search-results a{display:block;background:#fff;padding:1rem 1.2rem;border:1px solid var(--line);border-radius:10px;color:var(--ink)}
#search-results a:hover{border-color:var(--brand);text-decoration:none}
#search-results a b{color:var(--ink);font-family:var(--serif)}
#search-results a small{color:var(--muted);display:block;margin-top:.2rem;font-size:.85rem}
#search-empty{color:var(--muted);padding:1rem 0}

/* Sitemap page */
.sitemap-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1.5rem;margin:2rem 0}
.sitemap-grid section{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem}
.sitemap-grid h3{margin:0 0 .5rem;font-family:var(--serif);font-size:1rem;color:var(--brand-ink)}
.sitemap-grid ul{list-style:none;padding:0;margin:0}
.sitemap-grid li{margin-bottom:.35rem}
.sitemap-grid a{color:var(--ink-2);font-size:.94rem}

/* Pagination */
.pagination{display:flex;justify-content:center;gap:.4rem;margin:2rem 0}
.pagination a,.pagination span{padding:.5rem .85rem;border:1px solid var(--line);border-radius:8px;color:var(--ink-2);background:#fff;font-size:.9rem}
.pagination a:hover{border-color:var(--brand);text-decoration:none;color:var(--brand-2)}
.pagination .current{background:var(--brand);color:#fff;border-color:var(--brand)}

/* 404 */
.notfound{min-height:60vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:3rem 1.25rem}
.notfound h2{font-family:var(--serif);font-size:5rem;margin:0;color:var(--brand)}
.notfound p{color:var(--muted);max-width:400px;margin:.5rem auto 1.5rem}

/* Glossary */
.glossary dt{font-weight:700;color:var(--ink);font-family:var(--serif);margin-top:1rem}
.glossary dd{margin:.2rem 0 .8rem;color:var(--ink-2)}

/* Utility */
.section{padding:3rem 0}
.section-quiet{background:#fffefb}
.section-brand{background:var(--brand-2);color:#e9f4f2}
.section-brand h2,.section-brand h3{color:#fff}
.section-brand p{color:#b7d4d0}
.pill{display:inline-block;padding:.25rem .65rem;background:var(--brand-soft);color:var(--brand-ink);border-radius:999px;font-size:.75rem;font-weight:600;letter-spacing:.05em}
.tag-row{display:flex;flex-wrap:wrap;gap:.4rem;margin:.8rem 0}

/* Responsive */
@media (max-width:820px){
  .nav-toggle{display:block}
  .primary-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fffefb;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .primary-nav.open{display:block}
  .primary-nav ul{flex-direction:column;padding:.6rem 1.25rem 1rem;gap:.2rem}
  .primary-nav a{display:block;padding:.65rem 0;border-bottom:1px solid var(--line-2)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:1.5rem}
  .split .col-b{margin:0 1.25rem}
  .contact-grid{grid-template-columns:1fr}
  .article-wrap{grid-template-columns:1fr}
  .article-side{position:static}
  .nl-inner{grid-template-columns:1fr}
  .mf{grid-template-columns:1fr}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .hero{padding:2.6rem 0 2rem}
}