/* ============================================================
   Ballpark — shared site styles (landing page + SEO articles).
   The lite calculator (calculator.html) stays self-contained and does NOT use this.
   ============================================================ */
:root{
  --ink:#10171d;--muted:#5d6b75;--paper:#f7f7f3;--surface:#ffffff;--line:#e6e8e3;
  --accent:#0f9d6f;--accent-ink:#0a6f4e;--voltage:#c9f24d;--panel-dark:#0e1a18;
  --radius:14px;--shadow:0 1px 2px rgba(16,23,29,.04),0 8px 28px rgba(16,23,29,.06);
  --mono:"SFMono-Regular",ui-monospace,"Cascadia Mono","Segoe UI Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.55;font-size:16px;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 clamp(16px,4vw,40px)}
.narrow{max-width:760px}
a{color:var(--accent-ink)}
h2{font-size:clamp(22px,3.6vw,30px);letter-spacing:-.02em;line-height:1.15;margin:0 0 .5em}
h3{font-size:18px;letter-spacing:-.01em;margin:0 0 .35em}
.verified{font-family:var(--mono)}

/* buttons */
.btn{appearance:none;cursor:pointer;border:none;font:inherit;font-weight:700;font-size:15px;padding:13px 22px;border-radius:11px;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:transform .08s,filter .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(1.07)}
.btn-voltage{background:var(--voltage);color:var(--panel-dark)}
.btn-voltage:hover{filter:brightness(1.05)}
.btn-ghost{background:#fff;color:var(--accent-ink);border:1px solid rgba(15,157,111,.4)}

/* nav */
nav{position:sticky;top:0;z-index:10;background:rgba(247,247,243,.85);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
nav .row{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;text-decoration:none;color:var(--ink)}
.brand .mark{width:28px;height:28px;border-radius:8px;background:var(--panel-dark);display:grid;place-items:center;color:var(--voltage);font-size:17px}
nav .links{display:flex;gap:22px;align-items:center}
nav .links a{color:var(--muted);text-decoration:none;font-weight:600;font-size:14.5px}
nav .links a:hover{color:var(--ink)}
@media (max-width:640px){nav .links a:not(.btn){display:none}}

/* hero (landing) */
.hero{padding:clamp(40px,7vw,80px) 0 clamp(28px,4vw,44px);text-align:center}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--accent-ink);background:rgba(15,157,111,.1);border:1px solid rgba(15,157,111,.25);padding:6px 14px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:clamp(32px,6.2vw,56px);line-height:1.04;letter-spacing:-.03em;margin:0 0 .35em;max-width:16ch;margin-inline:auto}
.hero p.lede{color:var(--muted);font-size:clamp(16px,2.4vw,20px);max-width:60ch;margin:0 auto 26px}
.hero .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.trust{margin-top:22px;color:var(--muted);font-size:13.5px;display:flex;gap:18px;justify-content:center;flex-wrap:wrap}
.trust b{color:var(--ink)}

/* generic sections */
section{padding:clamp(34px,5vw,60px) 0}
.section-head{text-align:center;max-width:60ch;margin:0 auto clamp(26px,4vw,40px)}
.section-head p{color:var(--muted);font-size:17px;margin:0}
#calculator{padding-top:8px}
.calc-frame{width:100%;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);background:#fff;display:block;min-height:900px;overflow:hidden}

/* value-prop cards */
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media (max-width:760px){.cards3{grid-template-columns:1fr}}
.vp{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.vp .ic{width:40px;height:40px;border-radius:10px;background:rgba(15,157,111,.1);display:grid;place-items:center;font-size:20px;margin-bottom:14px}
.vp p{color:var(--muted);margin:0;font-size:15px}

/* email capture */
.capture{background:var(--panel-dark);color:#eaf3ef;border-radius:18px;padding:clamp(26px,4vw,44px);text-align:center;box-shadow:var(--shadow)}
.capture h2{color:#fff}
.capture p{color:#b9c8c1;max-width:52ch;margin:0 auto 22px;font-size:16px}
form.signup{display:flex;gap:10px;max-width:480px;margin:0 auto;flex-wrap:wrap;justify-content:center}
form.signup input[type=email]{flex:1;min-width:220px;font:inherit;padding:13px 15px;border-radius:11px;border:1px solid #2c3c38;background:#0a1412;color:#fff}
form.signup input[type=email]:focus{outline:none;border-color:var(--voltage)}
.signup-msg{margin-top:14px;font-size:14px;min-height:1.2em}
.signup-msg.ok{color:var(--voltage)}
.signup-msg.err{color:#ff9b85}
.capture small{display:block;margin-top:14px;color:#7e918a;font-size:12.5px}

/* paid block */
.paid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:clamp(24px,4vw,40px);box-shadow:var(--shadow)}
@media (max-width:760px){.paid{grid-template-columns:1fr}}
.paid ul{list-style:none;padding:0;margin:0 0 22px;display:grid;gap:10px}
.paid li{display:flex;gap:10px;align-items:flex-start;font-size:15.5px}
.paid li .ck{color:var(--accent);font-weight:800;flex:none}
.price{display:flex;align-items:baseline;gap:8px;margin-bottom:6px}
.price .amt{font-family:var(--mono);font-size:40px;font-weight:700;letter-spacing:-.02em}
.price .cur{color:var(--muted);font-weight:600}
.paid .panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:24px;text-align:center}
.paid .panel .sub{color:var(--muted);font-size:13.5px;margin:2px 0 18px}
.paid .panel .btn{width:100%;justify-content:center;margin-bottom:10px}
.guarantee{color:var(--muted);font-size:12.5px;margin-top:6px}

/* faq / accordion */
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:18px 20px;font-weight:600;font-size:16.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-size:22px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .ans{padding:0 20px 18px;color:var(--muted);font-size:15.5px}
.faq .ans p{margin:0 0 .6em}

/* ============================================================
   Article / cornerstone page styles
   ============================================================ */
.crumbs{font-size:13.5px;color:var(--muted);padding:18px 0 0}
.crumbs a{text-decoration:none}
.crumbs a:hover{text-decoration:underline}

article.post{padding:18px 0 10px}
article.post header.head{margin-bottom:26px}
article.post .kicker{font-size:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent-ink);margin:0 0 10px}
article.post h1{font-size:clamp(28px,5vw,44px);line-height:1.08;letter-spacing:-.02em;margin:0 0 .35em}
article.post .standfirst{color:var(--muted);font-size:clamp(16px,2.3vw,19px);margin:0}
article.post .meta{margin-top:16px;font-size:13px;color:var(--muted)}

.prose{font-size:17px;line-height:1.7}
.prose h2{margin:1.6em 0 .5em}
.prose h3{font-size:19px;margin:1.4em 0 .4em}
.prose p{margin:0 0 1.05em}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.3em}
.prose li{margin:.3em 0}
.prose strong{color:var(--ink)}
.prose a{font-weight:600}
.affiliate-note{font-size:13px;color:var(--muted)}

/* key takeaways box */
.takeaways{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:20px 22px;margin:0 0 28px;box-shadow:var(--shadow)}
.takeaways h2{font-size:14px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 12px}
.takeaways ul{margin:0;padding-left:1.2em}
.takeaways li{margin:.35em 0;font-size:15.5px}

/* data table */
.tbl{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15.5px;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.tbl th,.tbl td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
.tbl th{background:var(--paper);font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.tbl tr:last-child td{border-bottom:none}
.tbl td.num,.tbl th.num{text-align:right;font-family:var(--mono)}
.tbl tfoot td,.tbl .total td{font-weight:700}

/* callout note */
.callout{border-radius:12px;padding:16px 18px;margin:0 0 1.4em;font-size:15px}
.callout.info{background:rgba(15,157,111,.07);border:1px solid rgba(15,157,111,.25);color:#0a5c41}
.callout.warn{background:rgba(192,73,43,.06);border:1px solid rgba(192,73,43,.22);color:#7d3522}
.callout b{color:inherit}

/* inline CTA banner */
.cta-banner{background:var(--panel-dark);color:#eaf3ef;border-radius:16px;padding:24px clamp(20px,3vw,32px);margin:30px 0;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;box-shadow:var(--shadow)}
.cta-banner .t{margin:0;font-weight:700;font-size:18px;color:#fff}
.cta-banner .s{margin:4px 0 0;color:#b9c8c1;font-size:14.5px}
.cta-banner .btn{flex:none}

/* related links */
.related{margin:34px 0 10px}
.related h2{font-size:18px;margin-bottom:14px}
.related .grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:600px){.related .grid{grid-template-columns:1fr}}
.related a.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .08s,border-color .15s}
.related a.card:hover{transform:translateY(-2px);border-color:rgba(15,157,111,.4)}
.related a.card .h{font-weight:700;margin-bottom:3px}
.related a.card .d{color:var(--muted);font-size:13.5px}

/* footer */
footer{border-top:1px solid var(--line);margin-top:20px;padding:30px 0;color:var(--muted);font-size:13px}
footer .row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}