:root{
  --rn-red:#D72638;
  --rn-red-dark:#b81f2e;
  --rn-text:#111827;
  --rn-muted:#6B7280;
  --rn-border:#EEF2F7;
  --rn-bg:#FFFFFF;
  --rn-soft:#F9FAFB;
  --rn-green:#0F9F6E;
  --rn-yellow:#B7791F;
  --rn-danger:#C81E1E;
  --rn-blue:#2563EB;
  --rn-shadow:0 18px 45px rgba(17,24,39,.08);
  --rn-radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--rn-bg);color:var(--rn-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
a:hover{color:var(--rn-red)}
img{max-width:100%;height:auto}
.container{width:min(1160px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--rn-border)}
.navbar{height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:850;letter-spacing:-.03em;font-size:1.22rem}
.brand-mark{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:14px;background:var(--rn-red);color:#fff;font-weight:900;box-shadow:0 12px 30px rgba(215,38,56,.22)}
.nav-links{display:flex;align-items:center;gap:18px;font-weight:700;color:#374151;font-size:.95rem}
.nav-links a{padding:9px 3px;border-bottom:2px solid transparent}
.nav-links a.active{color:var(--rn-red);border-bottom-color:var(--rn-red)}
.nav-actions{display:flex;align-items:center;gap:10px}
.mobile-toggle{display:none;border:1px solid var(--rn-border);background:#fff;border-radius:12px;padding:9px 11px;font-weight:800}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:11px 18px;font-weight:800;cursor:pointer;transition:.18s ease;background:#fff;border:1px solid var(--rn-border);color:var(--rn-text)}
.btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(17,24,39,.08);color:var(--rn-text)}
.btn-primary{background:var(--rn-red);border-color:var(--rn-red);color:#fff}.btn-primary:hover{background:var(--rn-red-dark);color:#fff}
.btn-light{background:#fff}.btn-block{width:100%}.btn-small{padding:8px 12px;font-size:.88rem}.btn-danger{background:var(--rn-danger);color:#fff;border-color:var(--rn-danger)}
.hero{position:relative;overflow:hidden;padding:74px 0 58px;background:radial-gradient(circle at 20% 20%,rgba(215,38,56,.1),transparent 35%),linear-gradient(180deg,#fff 0%,#fff8f9 100%)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);gap:36px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(215,38,56,.17);background:#fff;border-radius:999px;color:var(--rn-red);font-weight:850;padding:7px 12px;font-size:.88rem}
h1,.h1{font-size:clamp(2.35rem,5vw,4.8rem);line-height:.98;letter-spacing:-.07em;margin:18px 0 18px}
h2{font-size:clamp(1.7rem,3vw,2.35rem);line-height:1.1;letter-spacing:-.04em;margin:0 0 12px} h3{margin:0 0 8px;font-size:1.1rem;letter-spacing:-.02em}
p{margin:0 0 16px}.lead{font-size:1.16rem;color:#374151;max-width:720px}.muted{color:var(--rn-muted)}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.hero-note{font-size:.92rem;color:var(--rn-muted);margin-top:14px}
.panel{background:#fff;border:1px solid var(--rn-border);border-radius:var(--rn-radius);box-shadow:var(--rn-shadow);padding:24px}.mock-card{display:grid;gap:14px}.mock-row{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid var(--rn-border);border-radius:16px;padding:14px;background:#fff}.mock-row strong{display:block}.pill{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;font-size:.82rem;font-weight:800}.pill.ok{background:#ECFDF5;color:#047857}.pill.warn{background:#FFFBEB;color:#92400E}.pill.bad{background:#FEF2F2;color:#B91C1C}.pill.gray{background:#F3F4F6;color:#4B5563}.pill.blue{background:#EFF6FF;color:#1D4ED8}
.section{padding:64px 0}.section-soft{background:var(--rn-soft)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section-head p{max-width:720px}
.grid{display:grid;gap:18px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:#fff;border:1px solid var(--rn-border);border-radius:var(--rn-radius);box-shadow:0 14px 36px rgba(17,24,39,.055);padding:22px}.card:hover{box-shadow:var(--rn-shadow)}
.card-icon{width:42px;height:42px;border-radius:15px;display:grid;place-items:center;background:#FFF1F2;color:var(--rn-red);font-weight:900;margin-bottom:14px}.list{padding-left:18px;margin:8px 0 0}.list li{margin:7px 0}.check-list{list-style:none;padding:0;margin:0}.check-list li{padding-left:28px;position:relative;margin:10px 0}.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--rn-green);font-weight:900}
.page-hero{padding:54px 0 34px;background:linear-gradient(180deg,#fff 0%,#fff7f8 100%);border-bottom:1px solid var(--rn-border)}.page-hero .lead{max-width:800px}
.form{display:grid;gap:14px}.field label{display:block;font-weight:800;margin-bottom:6px}.input,.textarea,.select{width:100%;border:1px solid #E5E7EB;border-radius:14px;padding:12px 13px;font:inherit;background:#fff}.textarea{min-height:130px;resize:vertical}.input:focus,.textarea:focus,.select:focus{outline:3px solid rgba(215,38,56,.16);border-color:var(--rn-red)}
.alert{border-radius:16px;padding:14px 16px;border:1px solid var(--rn-border);background:#fff;margin:0 0 16px}.alert-success{border-color:#BBF7D0;background:#F0FDF4;color:#166534}.alert-danger{border-color:#FECACA;background:#FEF2F2;color:#991B1B}.alert-warning{border-color:#FDE68A;background:#FFFBEB;color:#92400E}.alert-info{border-color:#BFDBFE;background:#EFF6FF;color:#1E40AF}
.table-wrap{overflow-x:auto;border:1px solid var(--rn-border);border-radius:18px;background:#fff}table{width:100%;border-collapse:collapse;font-size:.94rem}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--rn-border);vertical-align:top}th{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:#4B5563;background:#F9FAFB}tr:last-child td{border-bottom:0}
.admin-shell{display:grid;grid-template-columns:240px minmax(0,1fr);gap:22px;align-items:start}.admin-side{position:sticky;top:92px;background:#fff;border:1px solid var(--rn-border);border-radius:20px;padding:14px;box-shadow:0 12px 30px rgba(17,24,39,.04)}.admin-side a{display:flex;padding:10px 12px;border-radius:12px;font-weight:800;color:#374151}.admin-side a.active,.admin-side a:hover{background:#FFF1F2;color:var(--rn-red)}
.status-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.status-item{border:1px solid var(--rn-border);border-radius:16px;padding:14px;display:flex;justify-content:space-between;gap:14px;align-items:flex-start}.status-item strong{display:block}.status-dot{width:12px;height:12px;border-radius:999px;margin-top:7px}.status-ok{background:var(--rn-green)}.status-warning{background:var(--rn-yellow)}.status-failed{background:var(--rn-danger)}.status-muted{background:#9CA3AF}
.footer{border-top:1px solid var(--rn-border);padding:38px 0;background:#fff}.footer-grid{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer-links{display:flex;gap:14px;flex-wrap:wrap;color:#4B5563;font-weight:700;font-size:.94rem}.tiny{font-size:.86rem}.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#F3F4F6;border-radius:8px;padding:2px 6px}
@media(max-width:900px){.hero-grid,.grid-2,.grid-3,.grid-4,.admin-shell,.status-grid{grid-template-columns:1fr}.nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--rn-border);padding:14px 24px;flex-direction:column;align-items:flex-start}.nav-links.open{display:flex}.mobile-toggle{display:inline-flex}.navbar{height:72px}.section-head{display:block}.hero{padding:48px 0}.admin-side{position:static}.nav-actions .btn-light{display:none}}
.h2{font-size:2rem;line-height:1.1;font-weight:900;letter-spacing:-.04em;margin:8px 0 0;color:var(--rn-text)}
input[type="checkbox"]{width:18px;height:18px;vertical-align:middle;margin-right:8px;accent-color:var(--rn-red)}
input[type="file"]{padding:14px;background:#FFF7F8;border-style:dashed}
.table-wrap table td{max-width:420px;word-break:break-word}
.ad-slot{border:1px dashed #F3A4AD;background:#FFF7F8;border-radius:20px;padding:18px;text-align:center;box-shadow:0 10px 28px rgba(215,38,56,.06)}
.ad-slot span{display:block;color:var(--rn-red);font-weight:900;text-transform:uppercase;font-size:.76rem;letter-spacing:.08em;margin-bottom:4px}
.ad-slot strong{display:block;font-size:1.05rem;color:var(--rn-text)}
pre.code{overflow:auto;max-height:420px}
.admin-side a{margin-bottom:3px}
input[disabled]{background:#F9FAFB;color:#6B7280}
/* Delivery 5 SEO + formula generator additions */
.pricing-comparison th,.pricing-comparison td{border:1px solid var(--rn-border)}
.pricing-comparison th{background:#FFF7F8;color:#991B1B}.pricing-comparison td:first-child{background:#FCFCFD;width:230px}
.guide-card h3{min-height:58px}.article-card h2{margin-top:22px}.article-card h2:first-child{margin-top:0}.article-card p{font-size:1.02rem;color:#374151}.sticky-card{position:sticky;top:94px}.soft-hr{border:0;border-top:1px solid var(--rn-border);margin:18px 0}.formula-box{background:#111827;color:#fff;border-radius:16px;padding:14px;overflow:auto;white-space:pre-wrap;line-height:1.5}.formula-box code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.formula-box.large{font-size:1.02rem;min-height:96px;display:flex;align-items:center}.legal-card{max-width:980px;margin:0 auto}.legal-section{border-bottom:1px solid var(--rn-border);padding:0 0 18px;margin:0 0 22px}.legal-section:last-of-type{border-bottom:0}.legal-section h2{font-size:1.42rem}.use-case-card h2{font-size:1.42rem}.mini-table{margin:14px 0}.mini-table th{width:150px}.formula-result-card{position:sticky;top:94px}.footer-links a[href="/refund-policy"]{display:inline-flex}
@media(max-width:900px){.sticky-card,.formula-result-card{position:static}.guide-card h3{min-height:auto}.pricing-comparison td:first-child{width:auto}}