/* Stirling Investigations - ad landing page styles (spec v3, 26 Aug 2026)
   Tokens match global/css-variables.html (Cinematic Heritage). */
:root{
  --blackwood:#151714;--parchment:#EADFD0;--ochre:#C4A45A;--cognac:#943D06;--amber:#D5570C;
  --taupe:#85745D;--olive:#6C6B55;--warm-white:#FDFAF5;
  --ink:#1c1e1a;--muted:#5c5a52;--line:rgba(21,23,20,.12);
  --head:'Playfair Display',Georgia,'Times New Roman',serif;
  --sub:'Lora',Georgia,serif;
  --body:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --max:1120px;--r:6px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--body);font-size:17px;line-height:1.6;color:var(--ink);background:var(--warm-white)}
img{max-width:100%;height:auto;display:block}
a{color:var(--cognac)}
h1,h2,h3{font-family:var(--head);font-weight:600;line-height:1.15;margin:0 0 .5em;color:var(--blackwood)}
h1{font-size:clamp(2rem,4.6vw,3.25rem)}
h2{font-size:clamp(1.6rem,3vw,2.25rem)}
h3{font-size:1.2rem}
h1 em,h2 em{font-style:italic;color:var(--ochre)}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.lede{font-family:var(--sub);font-size:1.15rem;color:var(--muted)}
.eyebrow{font-family:var(--body);font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cognac);font-weight:600;margin-bottom:1rem}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.95rem 1.6rem;border-radius:var(--r);font-weight:600;text-decoration:none;font-size:1rem;border:2px solid transparent;transition:background .15s,color .15s,border-color .15s;cursor:pointer;white-space:nowrap}
.btn-primary{background:var(--amber);color:#fff;border-color:var(--amber)}
.btn-primary:hover{background:var(--cognac);border-color:var(--cognac)}
.btn-ghost{background:transparent;color:var(--parchment);border-color:rgba(234,223,208,.45)}
.btn-ghost:hover{border-color:var(--parchment)}
.btn-outline{background:transparent;color:var(--blackwood);border-color:var(--blackwood)}
.btn-outline:hover{background:var(--blackwood);color:var(--warm-white)}
.btn-sm{padding:.6rem 1.1rem;font-size:.92rem}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:var(--blackwood);color:var(--parchment);border-bottom:1px solid rgba(234,223,208,.12)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;height:68px}
.brand{display:flex;align-items:center;text-decoration:none;color:var(--parchment)}
.brand img{height:40px;width:auto}
.brand .wordmark{font-family:var(--head);font-size:1.25rem;letter-spacing:.02em}
.hdr-actions{display:flex;align-items:center;gap:.75rem}
.hdr-phone{color:var(--parchment);text-decoration:none;font-weight:600;font-size:.95rem}
.brand .wordmark{white-space:nowrap}
@media(max-width:640px){.hdr-phone{display:none}.brand .wordmark{font-size:1.05rem}}

/* hero */
.hero{background:var(--blackwood);color:var(--parchment);padding:clamp(3rem,8vw,6rem) 0 clamp(2.5rem,6vw,4.5rem);position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:-40% -20% auto auto;width:70vw;height:70vw;max-width:900px;max-height:900px;background:radial-gradient(circle,rgba(148,61,6,.55) 0%,rgba(148,61,6,.18) 35%,transparent 65%);pointer-events:none}
.hero .wrap{position:relative;max-width:820px}
.hero h1{color:var(--warm-white)}
.hero .lede{color:rgba(234,223,208,.85)}
.hero .eyebrow{color:var(--ochre)}
.hero-cta{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.75rem;align-items:center}
.hero-note{font-size:.9rem;color:rgba(234,223,208,.7);margin-top:1rem}

/* proof row */
.proof{background:var(--parchment);border-bottom:1px solid var(--line)}
.proof .wrap{display:flex;flex-wrap:wrap;gap:1rem 2.5rem;justify-content:center;align-items:center;padding:1.1rem 20px}
.proof .item{display:flex;align-items:center;gap:.6rem;font-size:.92rem;font-weight:600;color:var(--blackwood)}
.proof .item img{height:34px;width:auto}
.proof .dot{width:8px;height:8px;border-radius:50%;background:var(--cognac);flex:none}

/* sections */
section{padding:clamp(2.75rem,6vw,4.5rem) 0}
section.alt{background:var(--parchment)}
.grid{display:grid;gap:1.5rem}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
@media(min-width:900px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:1.5rem}
section.alt .card{background:var(--warm-white)}
.card h3{margin-bottom:.4rem}
.card p{margin:0;color:var(--muted);font-size:.98rem}
ul.facts{list-style:none;padding:0;margin:0;display:grid;gap:.6rem}
ul.facts li{padding-left:1.6rem;position:relative}
ul.facts li:before{content:"";position:absolute;left:0;top:.55em;width:.9rem;height:.9rem;border-radius:50%;background:var(--ochre)}

/* steps */
.steps{counter-reset:s;display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.step{counter-increment:s;padding:1.25rem 1.25rem 1.25rem 1.25rem;border-top:3px solid var(--ochre);background:#fff}
section.alt .step{background:var(--warm-white)}
.step:before{content:counter(s,decimal-leading-zero);font-family:var(--head);font-size:1.6rem;color:var(--cognac);display:block;margin-bottom:.4rem}
.step h3{font-size:1.05rem}
.step p{font-size:.95rem;color:var(--muted);margin:0}

/* price table */
.price{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.price .card strong{font-family:var(--head);font-size:1.6rem;color:var(--blackwood);display:block;margin:.25rem 0}
.small{font-size:.88rem;color:var(--muted)}

/* booking */
.book{background:var(--blackwood);color:var(--parchment)}
.book h2{color:var(--warm-white)}
.book .lede{color:rgba(234,223,208,.8)}
.book-frame{background:var(--warm-white);border-radius:var(--r);padding:8px;margin-top:1.5rem}
.book-frame iframe{width:100%;border:none;display:block;min-height:720px}
.book .cta-line{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin-top:1rem}

/* form */
.form-wrap{max-width:760px;margin:0 auto}
.form-wrap iframe{width:100%;border:none;border-radius:3px}

/* faq */
details{border-bottom:1px solid var(--line);padding:.9rem 0}
summary{cursor:pointer;font-weight:600;font-family:var(--sub);font-size:1.08rem;list-style:none;display:flex;justify-content:space-between;gap:1rem}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--cognac);font-weight:400;font-size:1.3rem;line-height:1}
details[open] summary:after{content:"\2013"}
details p{margin:.6rem 0 0;color:var(--muted)}

/* footer */
.ftr{background:var(--blackwood);color:rgba(234,223,208,.75);padding:2.5rem 0 5.5rem;font-size:.88rem}
.ftr .row{display:flex;flex-wrap:wrap;gap:1rem 2rem;justify-content:space-between;align-items:center}
.ftr a{color:var(--parchment);text-decoration:none}
.ftr a:hover{text-decoration:underline}
.ftr .links{display:flex;flex-wrap:wrap;gap:1.25rem}
.ftr .legal{margin-top:1.25rem;line-height:1.7}
@media(min-width:721px){.ftr{padding-bottom:2.5rem}}

/* mobile sticky CTA */
.sticky{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--warm-white);border-top:1px solid var(--line);padding:.6rem 12px;display:flex;gap:.6rem;justify-content:center;box-shadow:0 -6px 18px rgba(0,0,0,.08)}
.sticky .btn{flex:1;max-width:340px}
@media(min-width:721px){.sticky{display:none}}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* --- revision 2 (26 Aug pm) --- */
/* header sits over the hero, no border, bigger logo */
.hdr{position:absolute;top:0;left:0;right:0;background:transparent;border-bottom:none}
.hdr .wrap{height:88px}
.brand img{height:58px}
.hero{padding-top:calc(88px + clamp(3rem,8vw,6rem))}
/* hero photo */
.hero.has-img{background-color:var(--blackwood);background-image:linear-gradient(90deg,rgba(21,23,20,.96) 0%,rgba(21,23,20,.88) 45%,rgba(21,23,20,.45) 100%),var(--hero-img);background-size:cover;background-position:center right}
.hero.has-img:before{opacity:.6}
@media(max-width:720px){.hero.has-img{background-image:linear-gradient(180deg,rgba(21,23,20,.92) 0%,rgba(21,23,20,.9) 100%),var(--hero-img)}}
/* proof row: 3 on top, 2 below */
.proof .wrap{flex-direction:column;gap:.6rem;padding:1rem 20px}
.proof .line{display:flex;flex-wrap:wrap;gap:.6rem 2.5rem;justify-content:center;align-items:center}
/* subtle animated arrow link (matches the site tile arrow behaviour) */
.arrow-link{display:inline-flex;align-items:center;gap:.45rem;font-size:.9rem;font-weight:600;text-decoration:none;color:var(--cognac);margin-top:.9rem}
.arrow-link .arr{display:inline-block;transition:transform .2s;animation:nudge 2.4s ease-in-out infinite}
.arrow-link:hover .arr{transform:translateX(4px);animation:none}
.arrow-link.gold{color:var(--ochre)}
.arrow-link.pale{color:var(--parchment)}
@keyframes nudge{0%,70%,100%{transform:translateX(0)}85%{transform:translateX(4px)}}
.card .arrow-link{margin-top:.9rem}
.section-cta{margin-top:2rem}
/* thank-you tiles */
.tiles{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:2rem}
.tile{display:block;background:rgba(253,250,245,.06);border:1px solid rgba(234,223,208,.18);border-radius:var(--r);padding:1.25rem;text-decoration:none;color:var(--parchment);transition:border-color .15s,background .15s}
.tile:hover{border-color:var(--ochre);background:rgba(253,250,245,.09)}
.tile h3{color:var(--warm-white);font-size:1.05rem;margin-bottom:.3rem}
.tile p{color:rgba(234,223,208,.75);font-size:.92rem;margin:0}

/* --- revision 3 (1 Sep) --- */
.proof .item img{filter:grayscale(1);opacity:.72}
/* dark tick section */
section.dark{background:var(--blackwood);color:var(--parchment)}
section.dark h2{color:var(--warm-white)}
section.dark .lede{color:rgba(234,223,208,.8)}
ul.ticks{display:grid;gap:0 3rem;grid-template-columns:1fr;max-width:1000px}
@media(min-width:760px){ul.ticks{grid-template-columns:1fr 1fr}}
ul.ticks li{position:relative;padding:.85rem 0 .85rem 2.5rem;border-bottom:1px solid rgba(234,223,208,.12);font-size:.98rem}
ul.ticks li:before{content:"\2713";position:absolute;left:0;top:.8rem;width:1.5rem;height:1.5rem;border-radius:50%;background:rgba(108,107,85,.35);color:var(--ochre);font-size:.85rem;line-height:1.5rem;text-align:center}
/* case study */
.case{border-left:3px solid var(--ochre);padding:1.5rem 1.75rem;background:#fff;max-width:900px}
section.alt .case{background:var(--warm-white)}
.case p{color:var(--muted);font-size:.98rem}
.case .outcome{color:var(--ink);font-weight:600}

/* --- revision 4 (1 Sep pm): section photos --- */
.photo{border-radius:var(--r);overflow:hidden;margin-top:1.5rem;box-shadow:0 10px 30px rgba(21,23,20,.15)}
.photo img{width:100%;height:100%;object-fit:cover;display:block;min-height:240px}
.case-grid{display:grid;gap:1.5rem;align-items:stretch;max-width:1040px}
@media(min-width:820px){.case-grid{grid-template-columns:2fr 2.6fr}.case-grid .photo{margin-top:0;min-height:100%}}

/* --- revision 5 (1 Sep): layout + footer fixes --- */
html{background:var(--blackwood)}
.proof .wrap{gap:1.1rem}
.hero.has-img{background-position:center 30%}
/* who section: content left, photo right full height */
.who-grid{display:grid;gap:2rem}
@media(min-width:820px){.who-grid{grid-template-columns:1.15fr 1fr;align-items:stretch}.who-grid .photo{margin-top:0;height:100%;max-height:560px}}
.ftr-logo{height:64px;width:auto;margin-bottom:.75rem}
@media(max-width:599px){.ftr{padding-bottom:5.5rem}}
@media(min-width:600px){.sticky{display:none}.ftr{padding-bottom:2.5rem}}

/* --- revision 6 (1 Sep): hero crop, bullet rhythm --- */
.hero.has-img{background-position:center bottom}
.who-grid ul.facts{gap:1rem;max-width:52ch;font-size:.97rem;line-height:1.5}
.who-grid ul.facts li{padding-left:1.8rem}

/* --- revision 7 (1 Sep): fine-tuning --- */
.hero.has-img{background-position:center center}

.case p{max-width:48ch}