/* ==========================================================================
   4Square Distribution — design system
   Conservative, typographic, high-contrast. Built to read as an established
   commercial operator rather than a marketing template.
   ========================================================================== */

/* --- Design tokens ------------------------------------------------------ */
:root {
  /* Palette: deep navy authority, warm neutral ground, restrained brass accent.
     Navy carries the brand; brass appears sparingly so it still signifies. */
  --navy-900:#0d1b2a;  --navy-800:#13293d;  --navy-700:#1b3a53;
  --navy-600:#24506e;  --navy-500:#356287;
  --brass-600:#8a6a2f; --brass-500:#a8853f; --brass-400:#c9a961;
  --ink-900:#14181d;   --ink-700:#333c46;   --ink-500:#5b6673;
  --ink-400:#7d8794;   --ink-300:#aab3bd;
  --paper:#ffffff;     --paper-tint:#f7f8f9;  --paper-warm:#f4f2ee;
  --rule:#e3e6ea;      --rule-strong:#cfd4da;
  --green-700:#1f5f43;

  --measure:68ch;
  --gap-xs:.5rem; --gap-sm:1rem;  --gap-md:1.75rem;
  --gap-lg:3rem;  --gap-xl:5rem;  --gap-2xl:7.5rem;

  --shadow-sm:0 1px 2px rgba(13,27,42,.06), 0 1px 3px rgba(13,27,42,.04);
  --shadow-md:0 4px 6px -1px rgba(13,27,42,.07), 0 2px 4px -2px rgba(13,27,42,.05);
  --shadow-lg:0 12px 24px -8px rgba(13,27,42,.12), 0 4px 8px -4px rgba(13,27,42,.06);

  --ease:cubic-bezier(.4,0,.2,1);
}

/* --- Reset -------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,picture,svg{max-width:100%;display:block}
input,button,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}

/* --- Base --------------------------------------------------------------- */
body{
  font-family:"Source Serif 4","Charter","Georgia",serif;
  font-size:1.0625rem; line-height:1.7; color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,.sans,.eyebrow,.btn,.site-header,.site-footer,nav,label,input,select,textarea,th,.stat-figure,.card-kicker{
  font-family:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
}
h1,h2,h3,h4{color:var(--ink-900);line-height:1.15;letter-spacing:-.021em;font-weight:640}
h1{font-size:clamp(2.35rem,1.5rem + 3.1vw,3.9rem);letter-spacing:-.03em}
h2{font-size:clamp(1.75rem,1.25rem + 1.8vw,2.6rem);letter-spacing:-.026em}
h3{font-size:clamp(1.2rem,1.05rem + .5vw,1.45rem);font-weight:620}
h4{font-size:1.02rem;font-weight:640;letter-spacing:-.008em}
p{max-width:var(--measure)}
a{color:var(--navy-600);text-decoration-thickness:1px;text-underline-offset:.18em}
a:hover{color:var(--navy-800)}
strong{font-weight:640;color:var(--ink-900)}

/* Accessible focus — visible, never suppressed. */
:focus-visible{outline:2.5px solid var(--navy-600);outline-offset:3px;border-radius:2px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--navy-900);color:#fff;padding:.85rem 1.35rem;
  font-size:.9rem;font-weight:600;text-decoration:none;
}
.skip-link:focus{left:.5rem;top:.5rem}

/* --- Layout ------------------------------------------------------------- */
.container{width:min(100% - 2.5rem, 1180px);margin-inline:auto}
.container-narrow{width:min(100% - 2.5rem, 820px);margin-inline:auto}
.section{padding-block:var(--gap-2xl)}
.section-sm{padding-block:var(--gap-xl)}
.section-tint{background:var(--paper-tint)}
.section-warm{background:var(--paper-warm)}
.section-dark{background:var(--navy-900);color:#d5dde5}
.section-dark h1,.section-dark h2,.section-dark h3,.section-dark h4{color:#fff}
.section-dark a{color:var(--brass-400)}

.eyebrow{
  font-size:.72rem;font-weight:660;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brass-600);margin-bottom:1rem;display:block;
}
.section-dark .eyebrow{color:var(--brass-400)}
.lede{font-size:clamp(1.1rem,1.02rem + .35vw,1.28rem);line-height:1.62;color:var(--ink-500)}
.section-dark .lede{color:#b9c5d1}

.section-head{margin-bottom:var(--gap-lg);max-width:44rem}
.section-head p{margin-top:1rem}

/* --- Header ------------------------------------------------------------- */
.site-header{
  background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:50;
}
.site-header > .container{display:flex;align-items:center;gap:var(--gap-md);min-height:78px}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;flex-shrink:0}
/* Brand lockup: the supplied 4Square Distribution logo. */
.brand img{height:52px;width:auto;display:block}

/* The footer is navy and the logo's "4" is navy, so it needs a light plate. */
.brand-footer{
  background:#fff;padding:10px 14px;border-radius:8px;
  display:inline-block;margin-bottom:1.1rem;
}
.brand-footer img{height:48px}

@media (max-width:900px){ .brand img{height:44px} .brand-footer img{height:42px} }
@media (max-width:560px){ .brand img{height:38px} }

.primary-nav{display:flex;gap:.35rem;margin-left:auto;align-items:center}
.primary-nav a{
  font-size:.905rem;font-weight:520;color:var(--ink-700);text-decoration:none;
  padding:.5rem .78rem;border-radius:5px;transition:background .15s var(--ease),color .15s var(--ease);
}
.primary-nav a:hover{background:var(--paper-tint);color:var(--navy-800)}
.primary-nav a.is-active{color:var(--navy-800);font-weight:620}
.header-cta{margin-left:.6rem}

.nav-toggle{display:none;margin-left:auto;padding:.55rem;border-radius:5px;color:var(--ink-700)}
.nav-toggle:hover{background:var(--paper-tint)}

/* --- Buttons ------------------------------------------------------------ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.78rem 1.5rem;border-radius:5px;font-size:.93rem;font-weight:600;
  text-decoration:none;letter-spacing:-.005em;cursor:pointer;
  transition:background .17s var(--ease),border-color .17s var(--ease),
             transform .17s var(--ease),box-shadow .17s var(--ease);
}
.btn-primary{background:var(--navy-800);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--navy-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-secondary{background:var(--paper);color:var(--navy-800);border:1px solid var(--rule-strong)}
.btn-secondary:hover{border-color:var(--navy-600);color:var(--navy-900);background:var(--paper)}
.btn-ghost{color:var(--navy-700);padding-inline:.4rem}
.btn-ghost:hover{color:var(--navy-900)}
.btn-lg{padding:.95rem 1.9rem;font-size:.98rem}
.btn-on-dark{background:var(--brass-500);color:var(--navy-900)}
.btn-on-dark:hover{background:var(--brass-400);color:var(--navy-900)}
.btn-row{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;margin-top:2rem}

/* --- Hero --------------------------------------------------------------- */
.hero{position:relative;background:var(--navy-900);color:#e6ecf2;overflow:hidden}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.28}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(13,27,42,.96) 0%,rgba(13,27,42,.86) 42%,rgba(13,27,42,.55) 100%);
}
.hero-body{position:relative;padding-block:clamp(4.5rem,3rem + 8vw,8.5rem);max-width:47rem}
.hero h1{color:#fff;margin-bottom:1.4rem;text-wrap:balance}
.hero .lede{color:#c3cfda;max-width:38rem}
.hero-note{margin-top:1.9rem;font-size:.87rem;color:#8fa0b1;font-family:"Inter",system-ui,sans-serif}

/* --- Trust strip -------------------------------------------------------- */
.trust-strip{background:var(--navy-800);border-top:1px solid rgba(255,255,255,.07)}
.trust-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:1px;background:rgba(255,255,255,.08);
}
.trust-item{background:var(--navy-800);padding:1.65rem 1.5rem;text-align:center}
.trust-figure{
  font-family:"Inter",system-ui,sans-serif;font-size:1.55rem;font-weight:660;
  color:#fff;letter-spacing:-.028em;line-height:1.1;
}
.trust-label{font-size:.78rem;color:#93a4b5;margin-top:.4rem;font-family:"Inter",system-ui,sans-serif;letter-spacing:.01em}

/* --- Cards -------------------------------------------------------------- */
.grid{display:grid;gap:var(--gap-md)}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(310px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(272px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}

.card{
  background:var(--paper);border:1px solid var(--rule);border-radius:7px;
  padding:1.9rem;transition:border-color .19s var(--ease),box-shadow .19s var(--ease),transform .19s var(--ease);
}
.card h3{margin-bottom:.7rem}
.card p{color:var(--ink-500);font-size:.985rem}
a.card{text-decoration:none;display:block}
a.card:hover{border-color:var(--rule-strong);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.card-kicker{
  font-size:.71rem;font-weight:660;letter-spacing:.11em;text-transform:uppercase;
  color:var(--brass-600);margin-bottom:.7rem;display:block;
}
.card-link{
  margin-top:1.1rem;font-family:"Inter",system-ui,sans-serif;font-size:.885rem;
  font-weight:580;color:var(--navy-600);display:inline-flex;align-items:center;gap:.35rem;
}
a.card:hover .card-link{color:var(--navy-800)}
a.card:hover .card-link .arr{transform:translateX(3px)}
.arr{transition:transform .19s var(--ease);display:inline-block}

/* Photographic category card */
.pcard{
  border:1px solid var(--rule);border-radius:7px;overflow:hidden;background:var(--paper);
  display:flex;flex-direction:column;text-decoration:none;
  transition:border-color .19s var(--ease),box-shadow .19s var(--ease),transform .19s var(--ease);
}
.pcard:hover{border-color:var(--rule-strong);box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.pcard-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-tint)}
.pcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.pcard:hover .pcard-media img{transform:scale(1.035)}
.pcard-body{padding:1.55rem 1.65rem 1.75rem}
.pcard-body h3{margin-bottom:.55rem}
.pcard-body p{color:var(--ink-500);font-size:.955rem}

/* --- Split feature ------------------------------------------------------ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2.5rem,1.5rem + 4vw,5rem);align-items:center}
.split-media img{border-radius:7px;box-shadow:var(--shadow-lg);width:100%;aspect-ratio:4/3;object-fit:cover}
.split-reverse .split-media{order:2}

/* --- Numbered process --------------------------------------------------- */
.steps{counter-reset:step;display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:7px;overflow:hidden}
.step{background:var(--paper);padding:1.75rem 1.9rem;display:grid;grid-template-columns:auto 1fr;gap:1.35rem;align-items:start}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:"Inter",system-ui,sans-serif;font-size:.79rem;font-weight:680;
  color:var(--brass-600);letter-spacing:.05em;padding-top:.28rem;
}
.step h4{margin-bottom:.35rem}
.step p{color:var(--ink-500);font-size:.965rem}

/* --- Feature list ------------------------------------------------------- */
.flist{display:grid;gap:1.05rem}
.flist li{display:grid;grid-template-columns:auto 1fr;gap:.85rem;align-items:start;color:var(--ink-700)}
.flist .tick{color:var(--green-700);flex-shrink:0;margin-top:.42rem}
.section-dark .flist li{color:#c3cfda}
.section-dark .flist .tick{color:var(--brass-400)}

/* --- Callout / disclosure ----------------------------------------------- */
.callout{
  border-left:3px solid var(--brass-500);background:var(--paper-warm);
  padding:1.5rem 1.75rem;border-radius:0 6px 6px 0;
}
.callout p{font-size:.95rem;color:var(--ink-700)}
.callout p + p{margin-top:.7rem}
.disclosure{font-size:.845rem;color:var(--ink-500);line-height:1.62}

/* --- CTA band ----------------------------------------------------------- */
.cta-band{background:var(--navy-900);color:#fff;border-radius:8px;padding:clamp(2.5rem,2rem + 3vw,4rem)}
.cta-band h2{color:#fff;margin-bottom:.9rem}
.cta-band p{color:#b9c5d1;max-width:44rem}

/* --- Footer ------------------------------------------------------------- */
.site-footer{background:var(--navy-900);color:#93a4b5;padding-block:var(--gap-xl) var(--gap-md);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:var(--gap-md);padding-bottom:var(--gap-lg)}
.footer-about{font-size:.9rem;color:#8fa0b1;margin-top:1rem;max-width:28rem;line-height:1.65}
.footer-col h4{color:#fff;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:1rem;font-weight:620}
.footer-col ul{display:grid;gap:.55rem}
.footer-col a{color:#93a4b5;font-size:.9rem;text-decoration:none;font-family:"Inter",system-ui,sans-serif}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-contact{font-style:normal;font-size:.9rem;line-height:1.75;color:#93a4b5;font-family:"Inter",system-ui,sans-serif}
.footer-contact a{color:#93a4b5;text-decoration:none}
.footer-contact a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding-top:var(--gap-md);
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;
  font-size:.845rem;font-family:"Inter",system-ui,sans-serif;
}
.footer-legal{color:#7d8fa1;max-width:60ch;line-height:1.6}

/* --- Utilities ---------------------------------------------------------- */
.stack > * + *{margin-top:1.15rem}
.stack-lg > * + *{margin-top:2rem}
.text-center{text-align:center}
.mx-auto{margin-inline:auto}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* --- Responsive --------------------------------------------------------- */
@media (max-width:920px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr}
  .split-reverse .split-media{order:0}
}
@media (max-width:800px){
  .primary-nav{
    display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);
    border-bottom:1px solid var(--rule);flex-direction:column;align-items:stretch;
    padding:.6rem;gap:.15rem;box-shadow:var(--shadow-lg);
  }
  .primary-nav.is-open{display:flex}
  .primary-nav a{padding:.8rem 1rem}
  .header-cta{margin:.4rem 0 .2rem}
  .nav-toggle{display:block}
  .site-header > .container{position:relative}
}
@media (max-width:620px){
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .section{padding-block:var(--gap-xl)}
  .card{padding:1.5rem}
  .step{padding:1.4rem 1.35rem;gap:1rem}
}

/* --- Print -------------------------------------------------------------- */
@media print{
  .site-header,.site-footer,.btn-row,.cta-band,.nav-toggle{display:none}
  body{color:#000;font-size:11pt}
  .hero{background:none;color:#000}
  .hero-media{display:none}
  .hero h1,.hero .lede{color:#000}
}

/* --- Motion preference -------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .pcard:hover .pcard-media img{transform:none}
}

/* --- Data table --------------------------------------------------------- */
.dtable{width:100%;border-collapse:collapse;font-size:.95rem}
.dtable th{text-align:left;padding:.85rem 0;font-weight:600;color:var(--ink-900);width:42%;vertical-align:top}
.dtable td{padding:.85rem 0;color:var(--ink-500)}
.dtable tr + tr th,.dtable tr + tr td{border-top:1px solid var(--rule)}
.table-wrap{overflow-x:auto}

/* --- FAQ / disclosure list ---------------------------------------------- */
.faq{border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{
  padding:1.35rem 2.5rem 1.35rem 0;cursor:pointer;position:relative;list-style:none;
  font-family:"Inter",system-ui,sans-serif;font-weight:580;color:var(--ink-900);font-size:1.01rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:.5rem;top:1.75rem;width:9px;height:9px;
  border-right:2px solid var(--ink-400);border-bottom:2px solid var(--ink-400);
  transform:rotate(45deg);transition:transform .2s var(--ease);
}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq summary:hover{color:var(--navy-700)}
.faq .faq-body{padding:0 0 1.5rem;color:var(--ink-500);font-size:.985rem}
.faq .faq-body p + p{margin-top:.8rem}

/* --- Simple tab groups (no JS dependency for content) -------------------- */
.tabset{display:grid;gap:2rem}
.tab-head{display:flex;gap:.4rem;border-bottom:1px solid var(--rule);flex-wrap:wrap}
.tab-btn{
  padding:.75rem 1.15rem;font-family:"Inter",system-ui,sans-serif;font-size:.93rem;
  font-weight:560;color:var(--ink-500);border-bottom:2px solid transparent;margin-bottom:-1px;
}
.tab-btn[aria-selected="true"]{color:var(--navy-800);border-bottom-color:var(--navy-700);font-weight:620}
.tab-btn:hover{color:var(--navy-700)}

/* --- Contact / form ------------------------------------------------------ */
.field{display:grid;gap:.45rem;margin-bottom:1.15rem}
.field label{font-size:.9rem;font-weight:560;color:var(--ink-900)}
.field .hint{font-size:.83rem;color:var(--ink-400)}
.field input,.field select,.field textarea{
  padding:.72rem .9rem;border:1px solid var(--rule-strong);border-radius:5px;
  background:var(--paper);font-size:.95rem;font-family:"Inter",system-ui,sans-serif;
  transition:border-color .15s var(--ease),box-shadow .15s var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--navy-600);box-shadow:0 0 0 3px rgba(53,98,135,.13);
}
.field textarea{min-height:8rem;resize:vertical}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1.15rem}
@media (max-width:620px){.field-row{grid-template-columns:1fr}}

/* --- Prose (legal / policy pages) ---------------------------------------- */
.prose h2{margin-top:2.75rem;margin-bottom:1rem;font-size:1.5rem}
.prose h3{margin-top:2rem;margin-bottom:.7rem}
.prose p,.prose li{color:var(--ink-700)}
.prose p + p{margin-top:1.1rem}
.prose ul{margin:1.1rem 0;padding-left:1.3rem;list-style:disc;display:grid;gap:.6rem}
.prose ol{margin:1.1rem 0;padding-left:1.3rem;display:grid;gap:.6rem}
.prose > :first-child{margin-top:0}
.policy-meta{
  font-family:"Inter",system-ui,sans-serif;font-size:.85rem;color:var(--ink-400);
  padding-bottom:1.5rem;margin-bottom:2rem;border-bottom:1px solid var(--rule);
}