/* Deltry Automations - one stylesheet, no frameworks.
   Palette: workwear navy, hi-vis orange, cool white, pale grey.
   Rules: no shadows, no stock photos, one accent colour, mobile first, no em dashes anywhere. */

:root{
  --navy:#182430;
  --navy-deep:#111B25;
  --orange:#FF7A00;
  --orange-ink:#1A1408;
  --paper:#F7F9FB;
  --grey:#E9EDF1;
  --ink:#182430;
  --muted:#54616F;
  --line:#D5DCE3;
  --mono:'IBM Plex Mono',ui-monospace,'Courier New',monospace;
  --disp:'Montserrat',system-ui,sans-serif;
  --body:system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.6;font-size:17px}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink)}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px}

.wrap{max-width:1020px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
header{background:#fff;position:sticky;top:0;z-index:20;border-bottom:3px solid var(--orange)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1020px;margin:0 auto}
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{height:44px;width:auto;display:block}
nav ul{list-style:none;display:flex;gap:6px;align-items:center}
nav a{color:var(--ink);text-decoration:none;font-size:.95rem;padding:8px 12px;border-radius:4px}
nav a:hover{background:var(--grey)}
nav a.active{border-bottom:2px solid var(--orange);border-radius:0;font-weight:600}
nav a.nav-cta{background:var(--orange);color:var(--orange-ink);font-weight:700}
nav a.nav-cta:hover{background:#FF8D26}
#menu-btn{display:none;background:none;border:2px solid var(--ink);color:var(--ink);font-family:var(--mono);font-size:.8rem;padding:7px 12px;border-radius:4px;cursor:pointer;letter-spacing:.1em}
@media (max-width:760px){
  #menu-btn{display:block}
  .brand img{height:38px}
  nav{position:absolute;left:0;right:0;top:100%;background:#fff;display:none;border-bottom:3px solid var(--orange)}
  nav.open{display:block}
  nav ul{flex-direction:column;align-items:stretch;gap:0;padding:10px 20px 18px}
  nav a{display:block;padding:13px 10px;font-size:1.05rem}
  nav a.active{border-bottom:none;border-left:3px solid var(--orange);padding-left:12px}
  nav a.nav-cta{text-align:center;margin-top:8px;border-radius:6px}
}

/* ---------- buttons ---------- */
.btn{display:inline-block;background:var(--orange);color:var(--orange-ink);font-weight:700;font-family:var(--disp);text-decoration:none;padding:15px 26px;border-radius:6px;font-size:1.05rem;border:none;cursor:pointer}
.btn:hover{background:#FF8D26}
.btn-ghost{display:inline-block;background:transparent;color:inherit;font-weight:600;text-decoration:none;padding:14px 22px;border-radius:6px;border:2px solid currentColor;font-size:1rem}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.micro{font-family:var(--mono);font-size:.78rem;color:var(--muted);letter-spacing:.02em;margin-top:12px}
.hero .micro{color:#9FB0C0}

/* ---------- hero ---------- */
.hero{background:var(--navy);color:#fff;padding:64px 0 72px}
.hero .kicker{font-family:var(--mono);color:var(--orange);font-size:.8rem;letter-spacing:.2em;text-transform:uppercase;margin-bottom:18px}
.hero h1{font-family:var(--disp);font-size:clamp(2rem,5.5vw,3.3rem);line-height:1.12;letter-spacing:-.01em;max-width:17ch}
.hero p.lead{color:#C7D2DC;font-size:1.12rem;max-width:56ch;margin:20px 0 30px}
.hero strong{color:#fff}

/* ---------- sections ---------- */
section{padding:60px 0}
.section-grey{background:var(--grey)}
.section-navy{background:var(--navy);color:#fff}
.eyebrow{font-family:var(--mono);font-size:.75rem;letter-spacing:.22em;text-transform:uppercase;color:var(--orange);margin-bottom:12px}
h2{font-family:var(--disp);font-size:clamp(1.5rem,3.5vw,2.1rem);line-height:1.2;margin-bottom:18px;max-width:26ch}
.section-navy h2{color:#fff}
section p{max-width:62ch;margin-bottom:14px}
.section-navy p{color:#C7D2DC}

/* ---------- leak list ---------- */
.leaks ul{list-style:none;margin:26px 0;max-width:66ch}
.leaks li{padding:14px 0 14px 26px;border-bottom:1px solid var(--line);position:relative}
.leaks li::before{content:"";position:absolute;left:0;top:22px;width:12px;height:12px;background:var(--orange);border-radius:2px}
.leaks-close{font-weight:600;max-width:62ch;margin-top:22px}

/* ---------- worked example sheet ---------- */
.maths-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
@media (max-width:760px){.maths-grid{grid-template-columns:1fr}}
.sheet{font-family:var(--mono);background:var(--paper);border:2px solid var(--ink);border-radius:6px;overflow:hidden;font-size:.92rem}
.sheet-head{display:flex;justify-content:space-between;background:var(--ink);color:var(--paper);padding:10px 16px;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase}
.sheet-row{display:flex;justify-content:space-between;gap:12px;padding:13px 16px;border-bottom:1px dashed var(--line)}
.sheet-row span:last-child{font-weight:700;white-space:nowrap}
.sheet-total{display:flex;justify-content:space-between;align-items:center;padding:16px;background:var(--grey)}
.sheet-total .stamp{font-family:var(--disp);font-weight:700;font-size:1.7rem;color:var(--orange)}
.sheet-note{padding:10px 16px 14px;font-size:.75rem;color:var(--muted);background:var(--grey)}

/* ---------- how it works ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:30px}
@media (max-width:760px){.steps{grid-template-columns:1fr}}
.step{background:#fff;border:1px solid var(--line);border-radius:6px;padding:24px}
.step .n{font-family:var(--mono);color:var(--orange);font-weight:700;font-size:.85rem;letter-spacing:.15em;display:block;margin-bottom:10px}
.step h3{font-family:var(--disp);font-size:1.08rem;margin-bottom:8px}
.step p{font-size:.95rem;color:var(--muted);margin:0}

/* ---------- service cards ---------- */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:34px}
@media (max-width:820px){.cards{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:6px;padding:28px;display:flex;flex-direction:column}
.card.featured{border:2px solid var(--orange)}
.card h3{font-family:var(--disp);font-size:1.25rem;margin-bottom:4px}
.price{font-family:var(--mono);font-size:1.05rem;font-weight:700;margin-bottom:14px}
.price em{font-style:normal;color:var(--muted);font-weight:400;font-size:.85rem}
.card p{font-size:.98rem;margin-bottom:12px}
.card ul{list-style:none;margin:0 0 16px;font-size:.95rem}
.card li{padding:6px 0 6px 20px;position:relative;color:var(--muted)}
.card li::before{content:"";position:absolute;left:0;top:13px;width:9px;height:9px;background:var(--orange);border-radius:2px}
.rec{font-family:var(--mono);font-size:.8rem;background:var(--grey);border-left:3px solid var(--orange);padding:10px 14px;border-radius:0 4px 4px 0;margin-top:auto}
.rec b{display:block;letter-spacing:.1em;text-transform:uppercase;font-size:.68rem;margin-bottom:3px;color:var(--muted)}

/* ---------- sms vignette ---------- */
.sms{background:var(--grey);border:1px solid var(--line);border-radius:10px;padding:16px;margin:16px 0;max-width:340px;font-size:.88rem}
.sms .bubble{border-radius:14px;padding:10px 14px;margin-bottom:8px;max-width:88%;line-height:1.45}
.sms .in{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.sms .out{background:var(--navy);color:#fff;margin-left:auto;border-bottom-right-radius:4px}
.sms .meta{font-family:var(--mono);font-size:.68rem;color:var(--muted);text-align:center;margin-bottom:10px;letter-spacing:.06em}

/* ---------- results / honesty ---------- */
.results-empty{background:#fff;border:2px dashed var(--line);border-radius:6px;padding:34px;max-width:640px}
.results-empty .eyebrow{color:var(--muted)}

/* ---------- big cta band ---------- */
.cta-band{text-align:left}
.cta-band .wrap{display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between}
.cta-band h2{margin-bottom:6px}
.cta-band p{margin-bottom:0}

/* ---------- prose pages ---------- */
.prose{padding:56px 0;max-width:760px}
.prose h1{font-family:var(--disp);font-size:clamp(1.7rem,4vw,2.4rem);margin-bottom:20px}
.prose h2{font-size:1.25rem;margin:30px 0 10px}
.prose ul{margin:0 0 16px 22px}
.prose li{margin-bottom:6px}
.updated{font-family:var(--mono);font-size:.75rem;color:var(--muted);letter-spacing:.08em;margin-bottom:26px}

/* ---------- footer ---------- */
footer{background:var(--navy-deep);color:#9FB0C0;padding:44px 0;font-size:.9rem;border-top:3px solid var(--orange)}
footer .wrap{display:flex;flex-wrap:wrap;gap:22px;justify-content:space-between;align-items:flex-start}
footer a{color:#DDE5EC}
footer .fbrand{font-family:var(--disp);font-weight:700;color:#fff;font-size:1.05rem;display:flex;align-items:center;gap:9px}
footer .fbrand-icon{background:#fff;border-radius:6px;padding:3px;width:26px;height:auto;flex:none}
footer ul{list-style:none;display:flex;gap:18px;flex-wrap:wrap}
footer small{display:block;width:100%;margin-top:10px;color:#6E8093}

/* ---------- faq ---------- */
.faq details{background:#fff;border:1px solid var(--line);border-radius:6px;margin-bottom:12px;max-width:760px}
.faq summary{font-family:var(--disp);font-weight:700;font-size:1.02rem;padding:16px 20px;cursor:pointer;list-style:none;position:relative;padding-right:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--orange);font-size:1.4rem;font-weight:700}
.faq details[open] summary::after{content:"\2212"}
.faq details p{padding:0 20px 18px;margin:0;color:var(--muted);max-width:none}

/* ---------- proof strip ---------- */
.proof img{border:1px solid var(--line);border-radius:8px;margin-top:10px}