/* ============================================================
   SmartPainting — Wireframe stylesheet
   White ground, grey boxes, text-only hierarchy.
   No colour, no icons, no images, no shadows, no rounded corners.
   ============================================================ */

:root{
  --ink:#1a1a1a;
  --ink-2:#4a4a4a;
  --ink-3:#767676;
  --ink-4:#9a9a9a;
  --line:#c9c9c9;
  --line-soft:#e0e0e0;
  --box:#e9e9e9;
  --box-2:#f4f4f4;
  --wrap:1120px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:#fff;color:var(--ink);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- wireframe annotation strip ---------- */
.wf-strip{background:var(--box-2);border-bottom:1px solid var(--line)}
.wf-strip-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:7px 0;font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-4);font-weight:600}

/* ---------- header ---------- */
.site-header{border-bottom:1px solid var(--line);background:#fff}
.header-inner{display:flex;align-items:center;gap:28px;min-height:74px;padding:12px 0}
.logo{font-size:19px;font-weight:700;letter-spacing:-.02em;line-height:1.1;flex:none}
.logo span{display:block;font-size:9px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-4);margin-top:5px}
.nav{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--ink-2)}
.nav a{padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap}
.nav a:hover{color:var(--ink)}
.nav a.active{color:var(--ink);font-weight:700;border-bottom-color:var(--ink)}
.header-cta{flex:none}

/* ---------- buttons ---------- */
.wf-btn{display:inline-block;border:1px solid #9a9a9a;background:var(--box);
  color:var(--ink);font-size:14px;font-weight:600;padding:12px 22px;
  text-align:center;cursor:pointer;font-family:inherit;line-height:1.2}
.wf-btn:hover{background:#dedede}
.wf-btn-primary{background:#cfcfcf;border-color:#7d7d7d}
.wf-btn-primary:hover{background:#c2c2c2}
.wf-btn-sm{padding:9px 15px;font-size:13px}
.wf-btn-block{display:block;width:100%}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}

/* ---------- type ---------- */
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.08;letter-spacing:-.025em;
  font-weight:700;max-width:24ch}
h2{font-size:clamp(22px,2.7vw,30px);line-height:1.18;letter-spacing:-.02em;
  font-weight:700;margin-bottom:14px;max-width:30ch}
h3{font-size:17px;font-weight:700;line-height:1.3;margin-bottom:8px}
h4{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-3);margin-bottom:12px}
p{color:var(--ink-2)}
.lede{font-size:18px;line-height:1.6;color:var(--ink-2);max-width:60ch;margin-top:20px}
.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-4);font-weight:700;margin-bottom:16px}
.micro{font-size:12px;color:var(--ink-4);margin-top:16px;max-width:56ch}
.anno{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-4);
  border-left:2px solid #d5d5d5;padding-left:9px;margin-bottom:20px;font-weight:700}
.prose p{margin-bottom:14px;max-width:66ch}
.prose p:last-child{margin-bottom:0}

/* ---------- sections ---------- */
.section{padding:68px 0;border-bottom:1px solid var(--line-soft)}
.section:last-of-type{border-bottom:0}
.section-alt{background:var(--box-2)}
.section-tight{padding:48px 0}

/* ---------- layout ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split-top{align-items:start}
.stack-sm > * + *{margin-top:14px}

/* ---------- image placeholders ---------- */
.wf-img{background:var(--box);border:1px solid var(--line);display:flex;
  align-items:center;justify-content:center;text-align:center;padding:20px;
  color:var(--ink-4);font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  line-height:1.7;font-weight:600}
.wf-img-tall{aspect-ratio:4/3}
.wf-img-wide{aspect-ratio:16/6}
.wf-img-sq{aspect-ratio:1/1}
.wf-img-short{aspect-ratio:16/4}

/* ---------- cards ---------- */
.wf-card{border:1px solid var(--line);background:#fff;padding:26px}
.wf-card p{font-size:14px;line-height:1.6}
.wf-card-sm{padding:20px}

/* ---------- hairline rows ---------- */
.rows{border-top:1px solid var(--line)}
.row{display:flex;justify-content:space-between;align-items:baseline;gap:20px;
  padding:15px 0;border-bottom:1px solid var(--line);font-size:15px}
.row-label{font-weight:600;color:var(--ink)}
.row-note{color:var(--ink-4);font-size:12px;text-align:right;flex:none}

/* ---------- plain list ---------- */
.list-plain{list-style:none}
.list-plain li{padding:11px 0;border-bottom:1px solid var(--line-soft);
  font-size:15px;color:var(--ink-2)}
.list-plain li:last-child{border-bottom:0}

/* ---------- tag list ---------- */
.tag-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;list-style:none}
.tag-list li{border:1px solid var(--line);padding:6px 11px;font-size:13px;
  color:var(--ink-2);background:var(--box-2)}

/* ---------- CTA box ---------- */
.cta-box{border:1px solid var(--line);background:var(--box-2);padding:34px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-box h2{margin-bottom:8px}
.cta-box p{font-size:15px;max-width:52ch}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);
  background:#fff}
.step{padding:24px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step-num{font-size:10px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-4);font-weight:700;margin-bottom:12px}
.step p{font-size:14px}

/* ---------- forms ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-3);font-weight:700;margin-bottom:7px}
.input{border:1px solid var(--line);background:#fff;padding:11px 13px;font-size:14px;
  color:var(--ink-4);min-height:44px;display:flex;align-items:center}
.input-area{min-height:110px;align-items:flex-start}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:12px;color:var(--ink-4);margin-top:14px;max-width:52ch}

/* ---------- calculator service rows ---------- */
.svc{border:1px solid var(--line);background:#fff;padding:15px 17px;display:grid;
  grid-template-columns:auto 1fr auto;gap:16px;align-items:center;margin-bottom:10px}
.svc-check{width:18px;height:18px;border:1px solid #8f8f8f;background:#fff;flex:none}
.svc-check.on{background:#8f8f8f}
.svc-name{font-size:15px;font-weight:600;color:var(--ink);line-height:1.35}
.svc-help{font-size:12px;color:var(--ink-4);margin-top:3px;font-weight:400}
.svc-qty{display:flex;align-items:center;gap:9px;flex:none}
.svc-qty .input{width:92px;justify-content:center;color:var(--ink);
  font-variant-numeric:tabular-nums;font-weight:600;min-height:40px;padding:8px 10px}
.svc-unit{font-size:12px;color:var(--ink-4);width:56px}
.svc-flat{font-size:12px;color:var(--ink-4);font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;flex:none}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line);background:#fff;margin-bottom:12px}
.faq-q{padding:17px 19px;font-size:16px;font-weight:700;line-height:1.35;
  display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.faq-toggle{font-size:10px;color:var(--ink-4);font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;flex:none;padding-top:3px}
.faq-a{border-top:1px solid var(--line-soft);padding:15px 19px 19px;font-size:15px;
  color:var(--ink-2);line-height:1.65}
.faq-a p{font-size:15px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--box-2);padding:52px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-col p,.footer-col a{display:block;font-size:14px;color:var(--ink-2);
  margin-bottom:7px;line-height:1.5}
.footer-col a:hover{color:var(--ink)}
.footer-brand{font-size:17px;font-weight:700;letter-spacing:-.01em;margin-bottom:10px}
.footer-bottom{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12px;color:var(--ink-4)}

/* ---------- responsive ---------- */
@media(max-width:960px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
}
@media(max-width:720px){
  .header-inner{flex-wrap:wrap;gap:14px}
  .nav{margin-left:0;width:100%;flex-wrap:wrap;gap:16px;font-size:13px}
  .header-cta{margin-left:0}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .section{padding:48px 0}
  .footer-grid{grid-template-columns:1fr}
  .svc{grid-template-columns:auto 1fr;row-gap:12px}
  .svc-qty{grid-column:2}
  .svc-flat{grid-column:2}
  .cta-box{padding:24px}
}

/* ---------- calculator states ---------- */
.svc-off{opacity:.5}
.svc-off .svc-qty .input{background:var(--box-2)}
.calc-panel{border:1px solid var(--line);background:#fff;padding:30px}
.calc-step{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-4);
  font-weight:700;margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.calc-step + .svc{margin-top:0}
.calc-block{margin-bottom:34px}
.calc-block:last-child{margin-bottom:0}
.privacy-note{border:1px solid var(--line);background:var(--box-2);padding:16px 18px;
  font-size:13px;color:var(--ink-2);margin-top:22px}
.privacy-note strong{color:var(--ink)}

/* ---------- specificity fixes ---------- */
.wf-card p.anno,
.calc-panel p.anno{font-size:10px;line-height:1.5;color:var(--ink-4);
  letter-spacing:.14em;text-transform:uppercase;font-weight:700;margin-bottom:20px}
.step p.step-num{font-size:10px;line-height:1.4;color:var(--ink-4);
  letter-spacing:.14em;text-transform:uppercase;font-weight:700;margin-bottom:12px}
.footer-col p.footer-brand{font-size:17px;font-weight:700;letter-spacing:-.01em;
  margin-bottom:10px;color:var(--ink)}
.wf-card p.micro{font-size:12px;color:var(--ink-4)}