/* ==========================================================================
   AZ Supply & Solutions — stylesheet
   Design language follows apple.com: a near-monochrome palette, very large
   tight-tracked headlines, generous vertical rhythm, centred copy, rounded
   tiles on #f5f5f7, and one blue for every interactive element. Written from
   scratch to those rules — no Apple markup, assets or fonts are used.
   ========================================================================== */

:root{
  /* Apple's greys: near-black text, two page grounds, one muted grey. */
  --ink:#1d1d1f;
  --ink-2:#6e6e73;
  --ink-3:#86868b;
  --paper:#ffffff;
  --paper-2:#f5f5f7;
  --black:#000000;
  --line:#d2d2d7;
  --blue:#0071e3;
  --blue-link:#0066cc;
  --blue-hover:#0077ed;
  --wrap:980px;
  --wrap-wide:1250px;
  --r:18px;
  --r-lg:28px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",
    "Noto Sans Lao",Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.47059;letter-spacing:-.022em;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--blue-link);text-decoration:none}
a:hover{text-decoration:underline}

h1,h2,h3,h4{color:inherit;margin:0 0 .35em;font-weight:600;letter-spacing:-.015em}
h1{font-size:clamp(2.6rem,6.4vw,4rem);line-height:1.06;letter-spacing:-.025em}
h2{font-size:clamp(2rem,4.4vw,3rem);line-height:1.09;letter-spacing:-.022em}
h3{font-size:1.45rem;line-height:1.17;letter-spacing:-.019em}
h4{font-size:1.06rem;line-height:1.25}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}

.wrap{width:min(100% - 40px,var(--wrap));margin-inline:auto}
.wrap-wide{width:min(100% - 40px,var(--wrap-wide));margin-inline:auto}
.center{text-align:center}
.eyebrow{
  display:block;font-size:1.05rem;font-weight:600;color:var(--ink-2);
  letter-spacing:-.019em;margin-bottom:.4em;
}
.lead{font-size:clamp(1.2rem,2.1vw,1.55rem);line-height:1.29;letter-spacing:-.019em;
  color:var(--ink-2);font-weight:400}
.sub{font-size:1.2rem;line-height:1.4;color:var(--ink-2)}
.small{font-size:.85rem;line-height:1.35;color:var(--ink-3)}

.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;z-index:200;background:var(--ink);color:#fff;
  padding:10px 18px;border-radius:10px}
:focus-visible{outline:4px solid rgba(0,113,227,.5);outline-offset:2px;border-radius:4px}

/* ------------------------------------------------------------ buttons ---- */
.btn{
  display:inline-block;background:var(--blue);color:#fff!important;font-size:1.0625rem;
  font-weight:400;letter-spacing:-.022em;padding:.72em 1.35em;border-radius:980px;
  border:0;cursor:pointer;transition:background .2s ease;text-decoration:none!important;
}
.btn:hover{background:var(--blue-hover)}
.btn--ghost{background:transparent;color:var(--blue-link)!important;border:1px solid var(--blue);
  padding:calc(.72em - 1px) calc(1.35em - 1px)}
.btn--ghost:hover{background:var(--blue);color:#fff!important}
.btn--light{background:#fff;color:var(--ink)!important}
.btn--light:hover{background:#e8e8ed}

/* Apple's text link with a trailing chevron. */
.tlink{font-size:1.1875rem;letter-spacing:-.022em;white-space:nowrap}
.tlink::after{content:" \203A";font-weight:400}
.tlink:hover{text-decoration:underline}
.link-row{display:flex;gap:1.9rem;flex-wrap:wrap;justify-content:center;margin-top:1.1rem}
.btn-row{display:flex;gap:.85rem;flex-wrap:wrap;margin-top:1.7rem}
.center .btn-row,.cta .btn-row,.btn-row--center{justify-content:center}

/* ------------------------------------------------------------- header ---- */
.site-header{
  position:sticky;top:0;z-index:90;height:48px;
  background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,.08);
}
.site-header .wrap-wide{display:flex;align-items:center;height:100%;gap:2rem}
.brand{flex:0 0 auto;display:block}
.brand img{width:158px}
.nav{margin-left:auto;display:flex;align-items:center;gap:2.1rem}
.nav a{
  color:var(--ink);font-size:.75rem;font-weight:400;letter-spacing:-.01em;opacity:.88;
  text-decoration:none;
}
.nav a:hover{opacity:1;text-decoration:none}
.nav a.is-active{font-weight:600;opacity:1}
.lang-switch{font-weight:500!important;opacity:.88}
.nav-toggle{
  display:none;margin-left:auto;width:38px;height:38px;background:none;border:0;
  position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{
  content:"";position:absolute;left:10px;right:10px;height:1.5px;background:var(--ink);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle::before{top:14px}.nav-toggle span{top:19px;opacity:0}.nav-toggle::after{top:24px}
.nav-toggle[aria-expanded="true"]::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"]::after{transform:translateY(-5px) rotate(-45deg)}

/* --------------------------------------------------------------- hero ---- */
.hero{
  background:var(--paper-2);text-align:center;
  padding:clamp(3.6rem,7vw,5.4rem) 0 clamp(3rem,6vw,4.4rem);
}
.hero h1{margin-bottom:.25em}
.hero .sub{max-width:640px;margin-inline:auto;font-size:clamp(1.2rem,2.2vw,1.6rem);
  line-height:1.25;letter-spacing:-.021em;color:var(--ink)}
.hero-art{margin:2.6rem auto 0;max-width:820px}

.hero--dark{background:var(--black);color:#f5f5f7}
.hero--dark h1{color:#f5f5f7}
.hero--dark .sub{color:#a1a1a6}

/* ------------------------------------------------------------ sections --- */
.band{padding:clamp(3.6rem,7.5vw,6.5rem) 0}
.band--tint{background:var(--paper-2)}
.band--dark{background:var(--black);color:#a1a1a6}
.band--dark h2,.band--dark h3{color:#f5f5f7}
.band--dark .eyebrow{color:#a1a1a6}
.band-head{max-width:720px;margin:0 auto clamp(2.2rem,4vw,3.4rem);text-align:center}
.band-head p{color:var(--ink-2);font-size:1.2rem;line-height:1.4}
.band--dark .band-head p{color:#a1a1a6}

/* ---------------------------------------------------------------- tiles -- */
.tiles{display:grid;gap:12px}
.tiles--2{grid-template-columns:repeat(2,1fr)}
.tiles--3{grid-template-columns:repeat(3,1fr)}
.tiles--4{grid-template-columns:repeat(4,1fr)}
.tile{
  background:var(--paper-2);border-radius:var(--r-lg);padding:clamp(2rem,3.4vw,2.9rem);
  text-align:center;display:flex;flex-direction:column;align-items:center;
}
.tile h3{margin-bottom:.3em}
.tile p{color:var(--ink-2);font-size:1rem;line-height:1.42}
.tile .tlink{margin-top:auto;padding-top:1rem;font-size:1.0625rem}
.tile--dark{background:var(--black);color:#a1a1a6}
.band--dark .tile{background:#1d1d1f}
.band--dark .tile h3{color:#f5f5f7}
.band--dark .tile p{color:#a1a1a6}
.tile--dark h3{color:#f5f5f7}
.tile--dark p{color:#a1a1a6}
.tile-icon{
  width:52px;height:52px;margin-bottom:1.15rem;color:var(--ink);
}
.tile-icon svg{width:100%;height:100%;stroke:currentColor;fill:none;stroke-width:1.35;
  stroke-linecap:round;stroke-linejoin:round}
.tile--dark .tile-icon{color:#f5f5f7}

/* Numbered step tiles for the A-to-Z loop. */
.step-num{
  font-size:.8rem;font-weight:600;color:var(--ink-3);letter-spacing:.02em;
  margin-bottom:.7rem;
}
.tile--dark .step-num{color:#6e6e73}

/* ------------------------------------------------------------ solutions -- */
.sol{padding:clamp(3.4rem,7vw,6rem) 0;border-top:1px solid var(--line)}
.sol:first-of-type{border-top:0}
.sol-head{text-align:center;max-width:760px;margin:0 auto clamp(2rem,3.6vw,3rem)}
.sol-head .eyebrow{color:var(--ink-3);font-size:.95rem}
.sol-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.sol-card{background:var(--paper-2);border-radius:var(--r-lg);padding:clamp(1.8rem,3vw,2.6rem)}
.sol-card h4{color:var(--ink-3);font-size:.8rem;font-weight:600;letter-spacing:.02em;
  text-transform:uppercase;margin-bottom:.8em}
.sol-card p{font-size:1.05rem;line-height:1.45;margin:0}
.sol-card--fix{background:var(--black);color:#f5f5f7}
.sol-card--fix h4{color:#86868b}

/* --------------------------------------------------------------- values -- */
.value-list{display:grid;gap:0;max-width:820px;margin-inline:auto}
.value{padding:1.9rem 0;border-top:1px solid var(--line)}
.value:last-child{border-bottom:1px solid var(--line)}
.value h3{margin-bottom:.25em}
.value p{color:var(--ink-2);margin:0;font-size:1.05rem;line-height:1.45}
.band--dark .value{border-color:#333336}
.band--dark .value p{color:#a1a1a6}

/* --------------------------------------------------------------- ticks --- */
.ticks{list-style:none;margin:0;padding:0;display:grid;gap:1rem;text-align:left}
.ticks li{position:relative;padding-left:2rem;font-size:1.05rem;line-height:1.45;
  color:var(--ink-2)}
.ticks li::before{
  content:"";position:absolute;left:.35rem;top:.52em;width:10px;height:5px;
  border-left:2px solid var(--blue);border-bottom:2px solid var(--blue);
  transform:rotate(-45deg);
}

/* ------------------------------------------------------------ contact ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem)}
.contact-list{list-style:none;margin:0;padding:0;display:grid;gap:1.5rem}
.contact-list dd{margin:0}
.contact-list dt{font-size:.8rem;font-weight:600;color:var(--ink-3);
  letter-spacing:.02em;text-transform:uppercase;margin-bottom:.25em}
.contact-list a,.contact-list span{font-size:1.15rem;color:var(--ink)}
.contact-list--row{grid-template-columns:repeat(3,1fr);gap:2.4rem}
.note{background:var(--paper-2);border-radius:var(--r);padding:1.5rem 1.7rem}
.note h4{margin-bottom:.3em}
.note p{color:var(--ink-2);margin:0;font-size:1rem}

/* ------------------------------------------------------------------ CTA -- */
.cta{background:var(--paper-2);text-align:center;padding:clamp(3.4rem,7vw,5.4rem) 0}
.cta p{color:var(--ink-2);font-size:1.2rem;max-width:600px;margin-inline:auto}

/* --------------------------------------------------------------- footer -- */
.site-footer{background:var(--paper-2);color:var(--ink-2);padding:2.6rem 0;
  font-size:.75rem;line-height:1.33}
.site-footer .wrap-wide{border-top:1px solid var(--line);padding-top:1.6rem}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem;margin-bottom:1.9rem}
.site-footer h4{color:var(--ink);font-size:.75rem;font-weight:600;margin-bottom:.9em}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.site-footer a{color:var(--ink-2)}
.site-footer a:hover{color:var(--ink);text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:1.4rem}

/* ----------------------------------------------------------- responsive -- */
@media (max-width:940px){
  .tiles--3,.tiles--4{grid-template-columns:repeat(2,1fr)}
  .sol-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .contact-list--row{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media (max-width:734px){
  body{font-size:16px}
  .nav-toggle{display:block}
  .nav{
    position:absolute;top:48px;left:0;right:0;background:rgba(255,255,255,.97);
    backdrop-filter:blur(20px);flex-direction:column;align-items:stretch;gap:0;
    padding:.4rem 20px 1.4rem;display:none;border-bottom:1px solid var(--line);
  }
  .nav.is-open{display:flex}
  .nav a{padding:.95em 0;font-size:1.05rem;border-bottom:1px solid rgba(0,0,0,.06)}
  .tiles--2,.tiles--3,.tiles--4{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .link-row{gap:1.2rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* ==========================================================================
   Lao typography
   Lao stacks vowels above consonants and tone marks above those, so Apple's
   very tight Latin leading collides. Leading and tracking only — no layout
   changes, so both languages stay structurally identical.
   ========================================================================== */
html[lang="lo"] body{
  font-family:"Noto Sans Lao",Inter,-apple-system,"Segoe UI",sans-serif;
  line-height:1.9;letter-spacing:0;
}
html[lang="lo"] h1{line-height:1.42;letter-spacing:0}
html[lang="lo"] h2{line-height:1.45;letter-spacing:0}
html[lang="lo"] h3{line-height:1.55;letter-spacing:0}
html[lang="lo"] .hero .sub,html[lang="lo"] .lead{line-height:1.65;letter-spacing:0}
html[lang="lo"] .tile p,html[lang="lo"] .sol-card p,
html[lang="lo"] .value p,html[lang="lo"] .ticks li{line-height:1.85}
/* Lao has no case; uppercasing does nothing and tracking detaches tone marks. */
html[lang="lo"] .sol-card h4,
html[lang="lo"] .contact-list dt{text-transform:none;letter-spacing:0}
html[lang="lo"] .ticks li::before{top:.72em}
html[lang="lo"] .nav a{font-size:.86rem}