/* Urban AI Labs — marketing site (shared). Enterprise-light, charcoal + white, gold sparingly. */
:root{
  --charcoal:#15171C; --ink:#1F232B; --slate:#565F6E; --slate-2:#8A93A3;
  --white:#fff; --bg:#F5F6F8; --paper:#F7F5EF; --gray-50:#F6F7F9; --gray-100:#EEF0F4;
  --line:#E5E8EE; --line-2:#DCE0E8; --line-dark:rgba(255,255,255,.10);
  --gold:#9E7518; --gold-ink:#7E5C11; --gold-soft:#F4ECD8; --gold-bright:#D4A64F;
  --green:#0F9061; --green-soft:#E4F4EC; --blue:#2563EB; --blue-soft:#E7EEFE;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --serif:"Iowan Old Style",Georgia,"Times New Roman",serif;
  --mono:"SFMono-Regular",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --container:1200px; --r:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --sh-sm:0 1px 2px rgba(20,23,28,.06),0 1px 3px rgba(20,23,28,.05);
  --sh:0 10px 30px -12px rgba(20,23,28,.18),0 4px 10px -6px rgba(20,23,28,.10);
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;letter-spacing:-.003em}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.025em;line-height:1.08;text-wrap:balance;color:var(--ink)}
p{margin:0} a{color:inherit;text-decoration:none} img{max-width:100%;display:block}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
::selection{background:var(--gold-soft);color:var(--gold-ink)}
.wrap{width:min(100% - 2.6rem,var(--container));margin-inline:auto}
.eyebrow{font-family:var(--mono);font-size:.73rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);font-weight:600;display:inline-flex;align-items:center;gap:.6em}
.eyebrow::before{content:"";width:1.7em;height:1px;background:var(--gold);opacity:.7}
.lead{font-size:1.24rem;line-height:1.55;color:var(--slate);font-weight:400}
.serif{font-family:var(--serif);font-style:italic}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.55em;padding:.85em 1.4em;border-radius:9px;font-size:.98rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:transform .25s var(--ease),background .25s,border-color .25s,color .25s;white-space:nowrap}
.btn .arw{transition:transform .25s var(--ease)} .btn:hover .arw{transform:translateX(3px)}
.btn-gold{background:var(--gold);color:#fff;box-shadow:var(--sh-sm)} .btn-gold:hover{background:var(--gold-ink);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-2);color:var(--ink);background:#fff} .btn-ghost:hover{border-color:var(--ink);transform:translateY(-1px)}
.dark .btn-ghost{border-color:rgba(255,255,255,.24);color:#fff;background:transparent} .dark .btn-ghost:hover{border-color:#fff}

/* header + mega menu */
.scrollbar{position:fixed;inset:0 0 auto 0;height:2px;z-index:60}.scrollbar>i{display:block;height:100%;width:0;background:var(--gold);transition:width .1s linear}
header.nav{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:.95rem clamp(1.2rem,4vw,2.2rem);transition:background .35s,box-shadow .35s,border-color .35s,padding .35s;border-bottom:1px solid transparent}
header.nav.solid{background:rgba(255,255,255,.88);backdrop-filter:blur(14px) saturate(1.4);-webkit-backdrop-filter:blur(14px) saturate(1.4);border-bottom-color:var(--line);padding-top:.7rem;padding-bottom:.7rem}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:750;font-size:1.05rem;color:var(--ink)}
.brand .mk{width:24px;height:24px;flex:none}
nav.links{display:flex;align-items:center;gap:1.6rem}
nav.links .navlink{font-size:.94rem;color:var(--slate);font-weight:500;transition:color .2s}
nav.links .navlink:hover,nav.links .navlink.active{color:var(--ink)}
.navitem{position:relative;display:flex;align-items:center}
.navitem>.top{display:inline-flex;align-items:center;gap:.35em;font-size:.94rem;color:var(--slate);font-weight:500;cursor:pointer;padding:.4rem 0;background:none;border:none;font-family:inherit}
.navitem>.top .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg);margin-top:-3px;transition:.2s;opacity:.55}
.navitem:hover>.top,.navitem:focus-within>.top{color:var(--ink)} .navitem:hover>.top .caret{transform:rotate(225deg);margin-top:2px}
.mega{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);min-width:236px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh);padding:.55rem;opacity:0;visibility:hidden;transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;z-index:60}
.navitem:hover .mega,.navitem:focus-within .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(7px)}
.mega::before{content:"";position:absolute;top:-10px;left:0;right:0;height:12px}
.mega a{display:flex;flex-direction:column;padding:.55rem .7rem;border-radius:9px;color:var(--ink);font-size:.9rem;font-weight:600}
.mega a small{color:var(--slate-2);font-weight:400;font-size:.77rem;margin-top:.12rem}
.mega a:hover{background:var(--gray-50)}
.mega.wide{min-width:460px;display:grid;grid-template-columns:1fr 1fr;gap:.1rem}
.nav-cta{display:flex;align-items:center;gap:.7rem}
.menu-btn{display:none;background:none;border:1px solid var(--line-2);color:var(--ink);width:42px;height:42px;border-radius:10px;cursor:pointer}

/* page hero */
.phero{padding:8.5rem 0 3.5rem;background:linear-gradient(180deg,var(--paper),var(--white))}
.phero .crumb{font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;color:var(--slate-2);margin-bottom:1.1rem}
.phero .crumb a:hover{color:var(--gold)}
.phero h1{font-size:clamp(2.2rem,1.5rem+3vw,3.6rem);max-width:20ch;margin-top:1rem}
.phero p{margin-top:1.3rem;font-size:1.24rem;color:var(--slate);max-width:56ch}
.phero .cta{margin-top:2rem;display:flex;gap:.8rem;flex-wrap:wrap}

/* sections */
section{padding:clamp(3.5rem,7vw,6rem) 0;position:relative}
.paper{background:var(--paper)} .gray{background:var(--gray-50)} .dark{background:var(--charcoal);color:#EAECEF}
.dark h1,.dark h2,.dark h3{color:#fff} .dark .eyebrow{color:var(--gold-bright)} .dark .eyebrow::before{background:var(--gold-bright)}
.sec-head{max-width:46rem;margin-bottom:2.6rem}
.sec-head h2{font-size:clamp(1.7rem,1.2rem+1.9vw,2.5rem);margin-top:1rem}
.sec-head p{margin-top:1rem;color:var(--slate);font-size:1.14rem}
.dark .sec-head p{color:#AEB4BF}
.prose{max-width:60ch} .prose p{margin-bottom:1.1rem;color:var(--slate);font-size:1.08rem}

/* feature list */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.feature{border:1px solid var(--line);border-radius:var(--r);padding:1.5rem;background:#fff;box-shadow:var(--sh-sm)}
.feature .ic{width:38px;height:38px;border-radius:10px;background:var(--gold-soft);color:var(--gold);display:grid;place-items:center;font-weight:800;margin-bottom:1rem}
.feature h3{font-size:1.12rem;margin-bottom:.45rem}
.feature p{color:var(--slate);font-size:.96rem;line-height:1.55}
.checks{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:.7rem 1.6rem;max-width:52rem}
.checks li{display:flex;gap:.6rem;font-size:1.02rem;color:var(--ink)}
.checks li::before{content:"";width:20px;height:20px;border-radius:50%;background:var(--green-soft);flex:none;margin-top:.15em;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%230F9061' stroke-width='2.5'%3E%3Cpath d='M5 12l4 4 10-10'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}

/* metric row */
.metrics{display:flex;gap:2.6rem;flex-wrap:wrap}
.metric b{display:block;font-size:2.2rem;font-weight:800;letter-spacing:-.03em;color:var(--ink);font-variant-numeric:tabular-nums}
.metric small{font-size:.82rem;color:var(--slate-2);font-family:var(--mono);letter-spacing:.03em}

/* pricing */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.tier{border:1px solid var(--line);border-radius:var(--r);padding:1.8rem;background:#fff;box-shadow:var(--sh-sm);display:flex;flex-direction:column}
.tier.featured{border-color:var(--gold);box-shadow:0 20px 50px -24px rgba(158,117,24,.4)}
.tier .name{font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--gold)}
.tier .price{font-size:2.2rem;font-weight:800;letter-spacing:-.03em;margin:.5rem 0}.tier .price span{font-size:1rem;color:var(--slate-2);font-weight:500}
.tier ul{list-style:none;margin:1.2rem 0;padding:0;display:flex;flex-direction:column;gap:.6rem;flex:1}
.tier li{font-size:.95rem;color:var(--slate);display:flex;gap:.5rem}.tier li::before{content:"✓";color:var(--green);font-weight:700}

/* cta band */
.ctaband{background:radial-gradient(80% 130% at 50% 0%,#23283340,transparent 60%),var(--charcoal);text-align:center;color:#fff}
.ctaband h2{font-size:clamp(1.9rem,1.4rem+2vw,2.9rem)}
.ctaband p{color:#B7BDC7;max-width:46ch;margin:1.1rem auto 0;font-size:1.16rem}
.ctaband .cta{margin-top:2rem;display:flex;gap:.8rem;justify-content:center;flex-wrap:wrap}
.ctaband .btn-gold{background:linear-gradient(180deg,var(--gold-bright),#C6953C);color:#1a1206}

/* footer */
footer{background:var(--charcoal);color:#9AA1AE;padding:4rem 0 2.5rem}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:2rem}
.foot-brand .brand{color:#fff;margin-bottom:1rem} .foot-brand p{font-size:.9rem;max-width:32ch;line-height:1.6}
.foot-brand .eco{margin-top:1.1rem;font-family:var(--mono);font-size:.72rem;color:#6B7280}.foot-brand .eco b{color:#9AA1AE}
.fcol h4{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:#6B7280;margin-bottom:1rem;font-weight:600}
.fcol a,.fcol span{display:block;color:#AEB4BF;font-size:.9rem;padding:.28rem 0;transition:color .2s}.fcol a:hover{color:var(--gold-bright)}
.foot-base{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--line-dark);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.8rem;color:#6B7280}

/* contact form */
.cform{display:grid;grid-template-columns:1fr 1fr;gap:1rem;max-width:40rem}
.cform label{display:flex;flex-direction:column;gap:.35rem;font-size:.85rem;font-weight:600;color:var(--ink)}
.cform label.full{grid-column:1/-1}
.cform input,.cform textarea{padding:.7em .8em;border:1px solid var(--line-2);border-radius:9px;font-size:.95rem;font-family:inherit}
.cform textarea{min-height:120px;resize:vertical}
.contact-methods{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:2.4rem}
.cm{border:1px solid var(--line);border-radius:12px;padding:1.3rem;background:#fff}
.cm .k{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--slate-2)}
.cm b{display:block;margin-top:.4rem;font-size:1.02rem}

@media(max-width:960px){.features,.tiers,.contact-methods{grid-template-columns:1fr}.foot-grid{grid-template-columns:1fr 1fr}nav.links{display:none}.checks{grid-template-columns:1fr}.cform{grid-template-columns:1fr}}
@media(max-width:560px){.menu-btn{display:grid;place-items:center}.nav-cta .btn-ghost{display:none}.foot-grid{grid-template-columns:1fr}.metrics{gap:1.6rem}}