/* Chorusse — site styles
   Monochrome-forward, premium B2B. Provisional accent (deep indigo) used sparingly;
   final brand color is undecided (see knowledge/brand/brand-book.md). */

:root{
  --ink:#111114;
  --ink-2:#26262c;
  --paper:#ffffff;
  --paper-2:#f7f6f3;
  --paper-3:#f0efe9;
  --muted:#5f5f68;
  --muted-2:#8a8a92;
  --line:#e8e7e1;
  --accent:#3a37a6;      /* deep indigo — used sparingly */
  --accent-soft:#edecf7;
  --radius:14px;
  --radius-lg:22px;
  --maxw:1100px;
  --shadow-sm:0 1px 2px rgba(17,17,20,.05), 0 1px 3px rgba(17,17,20,.06);
  --shadow:0 10px 30px -12px rgba(17,17,20,.18);
  --font-display:"Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body:"Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font-body);color:var(--ink);background:var(--paper);
  line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.12;letter-spacing:-.02em;margin:0}
p{margin:0}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;height:66px}
.brand img{height:26px;width:auto}
.nav .spacer{flex:1}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:color .15s}
.nav-links a:hover{color:var(--ink)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-body);
  font-weight:600;font-size:15px;line-height:1;padding:12px 20px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;transition:transform .12s ease, background .15s, box-shadow .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#000;box-shadow:var(--shadow)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn-lg{padding:16px 28px;font-size:16px}
.btn-block{width:100%;justify-content:center}

/* ---------- sections ---------- */
section{padding:86px 0}
.alt{background:var(--paper-2)}
.eyebrow{font-family:var(--font-display);font-weight:600;font-size:13px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.section-head{max-width:640px;margin-bottom:52px}
.section-head h2{font-size:clamp(28px,4vw,40px)}
.section-head p{color:var(--muted);font-size:18px;margin-top:16px}
.lead{font-size:19px;color:var(--muted)}

/* ---------- hero ---------- */
.hero{position:relative;padding:96px 0 84px;overflow:hidden;
  background:
    radial-gradient(900px 420px at 82% -8%, var(--accent-soft), transparent 62%),
    radial-gradient(700px 380px at 6% 4%, #f3f2ee, transparent 60%),
    var(--paper)}
.hero .eyebrow{margin-bottom:20px}
.hero h1{font-size:clamp(34px,6vw,62px);max-width:16ch}
.hero h1 .soft{color:var(--muted-2)}
.hero .lead{max-width:60ch;margin-top:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.trustline{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:30px;color:var(--muted);font-size:14.5px}
.trustline span{display:inline-flex;align-items:center;gap:8px}
.dot{width:5px;height:5px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- grid & cards ---------- */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow-sm)}
.card h3{font-size:21px;margin-bottom:10px}
.card p{color:var(--muted);font-size:16px}

/* numbered steps */
.step .num{font-family:var(--font-display);font-weight:700;font-size:15px;color:var(--accent);
  border:1px solid var(--accent);width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.step h3{font-size:19px;margin-bottom:8px}

/* checklist */
.checks{list-style:none;padding:0;margin:22px 0;display:grid;gap:12px}
.checks li{display:flex;gap:12px;align-items:flex-start;color:var(--ink);font-size:16px}
.checks svg{flex:none;margin-top:3px;color:var(--accent)}

/* ---------- product / price ---------- */
.pricecard{border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;background:var(--paper);box-shadow:var(--shadow)}
.pricecard .price{font-family:var(--font-display);font-weight:700;font-size:52px;letter-spacing:-.03em;line-height:1}
.pricecard .price small{font-size:17px;color:var(--muted);font-weight:500;letter-spacing:0}
.pricecard .once{color:var(--muted);margin-top:6px;font-size:15px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.compare>div{padding:30px}
.compare .free{background:var(--paper-2)}
.compare .paid{background:var(--paper);border-left:1px solid var(--line)}
.compare h3{font-size:18px}
.tag{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);background:var(--accent-soft);padding:5px 11px;border-radius:999px;margin-bottom:14px}

/* ---------- FAQ ---------- */
.faq{max-width:760px}
.faq details{border-bottom:1px solid var(--line);padding:22px 0}
.faq summary{font-family:var(--font-display);font-weight:600;font-size:18px;cursor:pointer;
  list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--muted-2);font-weight:400}
.faq details[open] summary::after{content:"\2013"}
.faq details p{color:var(--muted);margin-top:14px;font-size:16px}

/* ---------- CTA band ---------- */
.ctaband{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:56px 44px;text-align:center}
.ctaband h2{font-size:clamp(26px,3.4vw,36px);color:#fff}
.ctaband p{color:#b7b7bf;margin:14px auto 28px;max-width:52ch}
.ctaband .btn-primary{background:#fff;color:var(--ink)}
.ctaband .btn-primary:hover{background:#efeee9}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#c8c8cf;padding:64px 0 40px;font-size:15px}
.site-footer img{height:24px;margin-bottom:18px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.site-footer a{color:#c8c8cf;transition:color .15s}
.site-footer a:hover{color:#fff}
.site-footer h4{font-family:var(--font-display);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#7d7d86;margin-bottom:16px;font-weight:600}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.footer-tag{color:#8a8a92;max-width:38ch;line-height:1.6}
.footer-bottom{border-top:1px solid #2a2a30;margin-top:44px;padding-top:24px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;color:#7d7d86;font-size:13.5px}

/* ---------- prose (legal pages) ---------- */
.page-hero{padding:64px 0 24px;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(30px,4.5vw,44px)}
.page-hero .updated{color:var(--muted);margin-top:12px;font-size:15px}
.prose{max-width:760px;padding:56px 0 90px}
.prose h2{font-size:23px;margin:40px 0 12px}
.prose h3{font-size:18px;margin:26px 0 8px}
.prose p,.prose li{color:var(--ink-2);font-size:16.5px}
.prose p{margin:12px 0}
.prose ul{margin:12px 0;padding-left:22px;display:grid;gap:8px}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.prose strong{color:var(--ink)}
.callout{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin:22px 0;font-size:15.5px;color:var(--muted)}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .compare .paid{border-left:none;border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .nav-links{display:none}
  section{padding:64px 0}
  .hero{padding:72px 0 60px}
}
@media (max-width:520px){
  body{font-size:16px}
  .ctaband{padding:40px 22px}
  .card,.pricecard{padding:26px}
}