/* ============================================================
   AHK Solutions Trading: brushed aluminium, molten copper accent
   ============================================================ */

:root {
  /* Aluminium scale (cool light) */
  --alu-0:#FBFBFC; --alu-1:#F4F5F8; --alu-2:#E9EBEF; --alu-3:#DBDEE4; --alu-4:#C6CBD3;
  /* Ink */
  --ink:#16191D; --ink-2:#333A42; --muted:#565D68; --muted-2:#818893;
  /* Copper accent */
  --copper:#B4531E; --copper-2:#C86E38; --copper-deep:#7F3813; --copper-wash:#F7EBE2;
  /* Steel secondary */
  --steel:#465063; --graphite:#14171B;
  /* System */
  --line:rgba(22,25,29,.12); --line-soft:rgba(22,25,29,.07);
  --shadow-sm:0 1px 2px rgba(20,23,27,.05), 0 2px 8px rgba(20,23,27,.05);
  --shadow-md:0 12px 30px -12px rgba(20,23,27,.22);
  --shadow-lg:0 30px 70px -25px rgba(20,23,27,.32);
  --radius:14px; --radius-sm:10px; --radius-lg:22px;
  --container:1180px;
  --font-display:'Space Grotesk', system-ui, sans-serif;
  --font-body:'Inter', system-ui, sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; font-family:var(--font-body); color:var(--ink);
  background:var(--alu-1); line-height:1.6; font-size:17px;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
/* Lenis */
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
.lenis.lenis-stopped{overflow:hidden}

img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.05;letter-spacing:-.02em;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)} .muted-2{color:var(--muted-2)}

/* Brushed-metal texture layer */
.brushed{
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,.5) 0 1px, transparent 1px 3px),
    linear-gradient(180deg, var(--alu-0), var(--alu-2));
  background-blend-mode:soft-light,normal;
}

/* ---------- Accessibility ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:300;
  background:var(--copper);color:#fff;padding:.7rem 1.1rem;border-radius:0 0 10px 0;font-weight:600;
}
.skip-link:focus{left:0}
:focus-visible{outline:3px solid var(--copper);outline-offset:3px;border-radius:4px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-display);
  font-weight:500;font-size:.95rem;letter-spacing:.01em;padding:.85rem 1.5rem;border-radius:999px;
  border:1px solid transparent;cursor:pointer;transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease),color .3s;
}
.btn:active{transform:translateY(1px)}
.btn--copper{background:var(--copper);color:#fff;box-shadow:0 8px 22px -8px rgba(180,83,30,.7)}
.btn--copper:hover{background:var(--copper-deep);box-shadow:0 12px 28px -8px rgba(180,83,30,.75);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--alu-4)}
.btn--ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn--light{background:var(--alu-0);color:var(--ink);border-color:var(--line)}
.btn--light:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn .arw{transition:transform .3s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}

/* ---------- Header / nav ---------- */
.site-header{position:sticky;top:0;z-index:100;backdrop-filter:saturate(1.4) blur(10px);
  background:rgba(244,245,248,.78);border-bottom:1px solid var(--line-soft);transition:box-shadow .3s,background .3s}
.site-header.scrolled{box-shadow:0 1px 0 var(--line),0 10px 30px -20px rgba(20,23,27,.35);background:rgba(244,245,248,.92)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:inline-flex;align-items:center;gap:.7rem}
.brand__mark{width:34px;height:34px;display:block;flex:0 0 auto}
.brand__mark .cube{width:100%;height:100%;filter:drop-shadow(0 3px 6px rgba(20,23,27,.18))}
.brand__text{display:flex;flex-direction:column;line-height:1}
.brand__name{font-family:var(--font-display);font-weight:700;font-size:1.15rem;letter-spacing:.06em}
.brand__sub{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.24em;text-transform:uppercase;color:var(--muted);margin-top:3px}
.nav__links{display:flex;align-items:center;gap:.35rem}
.nav__link{font-family:var(--font-display);font-weight:500;font-size:.95rem;padding:.55rem .85rem;border-radius:8px;color:var(--ink-2);position:relative;transition:color .25s}
.nav__link::after{content:"";position:absolute;left:.85rem;right:.85rem;bottom:.35rem;height:2px;background:var(--copper);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav__link:hover{color:var(--ink)} .nav__link:hover::after,.nav__link[aria-current="page"]::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--ink)}
.nav__cta{margin-left:.6rem}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav__toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}

/* ---------- Section scaffold ---------- */
.section{padding:clamp(4rem,9vw,7.5rem) 0;position:relative}
.section--tight{padding:clamp(3rem,6vw,5rem) 0}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--copper-deep)}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--copper)}
.section__head{max-width:640px;margin-bottom:3rem}
.section__head h2{font-size:clamp(2rem,4vw,3rem);margin:1rem 0 .9rem}
.section__head p{color:var(--muted);font-size:1.06rem}
.lead{font-size:1.15rem;color:var(--ink-2)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:clamp(3.5rem,7vw,6rem) 0 clamp(3rem,6vw,5rem);overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.16;filter:grayscale(.2) contrast(1.05)}
.hero__bg::after{content:"";position:absolute;inset:0;background:
  radial-gradient(120% 90% at 85% 10%, rgba(200,110,56,.16), transparent 55%),
  linear-gradient(180deg, var(--alu-1) 12%, rgba(244,245,248,.4) 45%, var(--alu-1) 92%)}
.hero .container{position:relative;z-index:1}
.hero__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.hero h1{font-size:clamp(2.6rem,6vw,4.7rem);letter-spacing:-.035em}
.hero h1 .cu{color:var(--copper);position:relative}
.hero__intro{margin:1.6rem 0 2.2rem;font-size:1.2rem;color:var(--ink-2);max-width:34ch}
.hero__cta{display:flex;flex-wrap:wrap;gap:1rem}
.hero__panel{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:4/5;background:var(--graphite)}
.hero__panel img{width:100%;height:100%;object-fit:cover;opacity:.92}
.hero__panel::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,transparent 40%,rgba(20,23,27,.55));mix-blend-mode:multiply}
.hero__tag{position:absolute;left:18px;bottom:18px;z-index:2;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;color:#fff;background:rgba(20,23,27,.55);backdrop-filter:blur(4px);padding:.5rem .8rem;border-radius:8px;border:1px solid rgba(255,255,255,.14)}

/* ---------- Marquee (metals strip) ---------- */
.marquee{background:var(--graphite);color:var(--alu-1);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);overflow:hidden;padding:1.15rem 0}
.marquee__track{display:flex;gap:0;width:max-content;will-change:transform;animation:scrollx 42s linear infinite}
.marquee:hover .marquee__track{animation-play-state:paused}
.marquee__item{display:inline-flex;align-items:baseline;gap:.7rem;padding:0 2.2rem;border-right:1px solid rgba(255,255,255,.09);white-space:nowrap}
.marquee__sym{font-family:var(--font-mono);color:var(--copper-2);font-size:.9rem;font-weight:500}
.marquee__name{font-family:var(--font-display);font-size:1.25rem;font-weight:500;letter-spacing:.01em}
.marquee__forms{font-size:.8rem;color:var(--muted-2)}
@keyframes scrollx{to{transform:translateX(-50%)}}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.stat{background:var(--alu-0);padding:1.9rem 1.5rem}
.stat__num{font-family:var(--font-display);font-weight:600;font-size:clamp(2.4rem,4.5vw,3.4rem);line-height:1;letter-spacing:-.03em;color:var(--ink)}
.stat__num .suf{color:var(--copper)}
.stat__label{font-weight:600;margin-top:.7rem;font-size:.98rem}
.stat__note{font-family:var(--font-mono);font-size:.72rem;color:var(--muted-2);margin-top:.35rem;letter-spacing:.02em}

/* ---------- Pillars (what we do) ---------- */
.pillars{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.pillar{position:relative;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--alu-0);box-shadow:var(--shadow-sm);transition:transform .5s var(--ease),box-shadow .5s var(--ease);will-change:transform}
.pillar:hover{box-shadow:var(--shadow-md)}
.pillar__img{aspect-ratio:16/9;overflow:hidden}
.pillar__img img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.pillar:hover .pillar__img img{transform:scale(1.06)}
.pillar__body{padding:1.8rem 1.8rem 2rem}
.pillar__kicker{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--copper-deep)}
.pillar__body h3{font-size:1.55rem;margin:.5rem 0 .8rem}
.pillar__body>p{color:var(--muted)}
.pillar__points{margin-top:1.2rem;display:flex;flex-direction:column;gap:.5rem}
.pillar__points li{display:flex;gap:.6rem;align-items:flex-start;font-size:.95rem;color:var(--ink-2)}
.pillar__points li::before{content:"";width:7px;height:7px;margin-top:.5rem;flex:0 0 auto;background:var(--copper);border-radius:2px;transform:rotate(45deg)}
.pillar__link{display:inline-flex;align-items:center;gap:.5rem;margin-top:1.5rem;font-family:var(--font-display);font-weight:500;color:var(--copper-deep)}
.pillar__link .arw{transition:transform .3s var(--ease)}
.pillar:hover .pillar__link .arw{transform:translateX(4px)}

/* ---------- Process (pinned) ---------- */
.process{background:var(--graphite);color:var(--alu-1)}
.process .eyebrow{color:var(--copper-2)} .process .eyebrow::before{background:var(--copper-2)}
.process .section__head h2{color:#fff} .process .section__head p{color:var(--alu-4)}
.process__wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:3rem;align-items:start}
.process__sticky{position:sticky;top:120px}
.process__count{font-family:var(--font-display);font-size:clamp(6rem,16vw,11rem);line-height:.8;font-weight:700;color:transparent;-webkit-text-stroke:1.5px rgba(255,255,255,.22)}
.process__count .on{color:var(--copper-2);-webkit-text-stroke:1.5px var(--copper-2)}
.process__now{font-family:var(--font-mono);letter-spacing:.2em;text-transform:uppercase;font-size:.8rem;color:var(--alu-4);margin-top:1rem}
.process__steps{display:flex;flex-direction:column;gap:0}
.process__step{padding:2.2rem 0;border-top:1px solid rgba(255,255,255,.12);opacity:.4;transition:opacity .4s var(--ease)}
.process__step:last-child{border-bottom:1px solid rgba(255,255,255,.12)}
.process__step.is-active{opacity:1}
.process__step h3{font-size:1.7rem;color:#fff;display:flex;align-items:center;gap:1rem}
.process__step h3 .n{font-family:var(--font-mono);font-size:.9rem;color:var(--copper-2);font-weight:400}
.process__step p{margin-top:.7rem;color:var(--alu-4);max-width:46ch}

/* ---------- Corridors ---------- */
.corridors{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.corridor{border:1px solid var(--line);border-radius:var(--radius);padding:2rem;background:var(--alu-0);position:relative;overflow:hidden}
.corridor::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--copper),var(--copper-2))}
.corridor__route{display:flex;align-items:center;gap:.9rem;font-family:var(--font-display);font-weight:600;font-size:1.35rem}
.corridor__route .dot{width:11px;height:11px;border-radius:50%;background:var(--copper);flex:0 0 auto}
.corridor__route .line{flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--alu-4) 0 6px,transparent 6px 12px)}
.corridor p{margin-top:1rem;color:var(--muted)}

/* ---------- Metals grid (Materials) ---------- */
.metals{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.metal{background:var(--alu-0);padding:1.7rem 1.4rem;position:relative;transition:background .3s}
.metal:hover{background:var(--copper-wash)}
.metal__sym{font-family:var(--font-mono);font-size:.85rem;color:var(--copper-deep);letter-spacing:.05em}
.metal__name{font-family:var(--font-display);font-size:1.6rem;font-weight:600;margin:.5rem 0 .2rem}
.metal__forms{font-size:.85rem;color:var(--muted);font-family:var(--font-mono);letter-spacing:.01em}
.metal__note{font-size:.9rem;color:var(--ink-2);margin-top:.9rem;line-height:1.5}
.metal__big{position:absolute;right:1rem;top:.6rem;font-family:var(--font-display);font-weight:700;font-size:2.4rem;color:var(--line);pointer-events:none}

/* ---------- Distribution cards ---------- */
.dcards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.dcard{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--alu-0);box-shadow:var(--shadow-sm);transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.dcard:hover{box-shadow:var(--shadow-md)}
.dcard__img{aspect-ratio:4/3;overflow:hidden}
.dcard__img img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.dcard:hover .dcard__img img{transform:scale(1.06)}
.dcard__body{padding:1.4rem 1.5rem 1.7rem}
.dcard__body h3{font-size:1.25rem;margin-bottom:.55rem}
.dcard__body p{color:var(--muted);font-size:.95rem}

/* ---------- Service groups ---------- */
.sgroup{display:grid;grid-template-columns:.95fr 1.05fr;gap:3rem;align-items:center;padding:clamp(2.5rem,5vw,4rem) 0;border-top:1px solid var(--line)}
.sgroup:nth-child(even) .sgroup__media{order:2}
.sgroup__media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);aspect-ratio:5/4}
.sgroup__media img{width:100%;height:100%;object-fit:cover}
.sgroup__phase{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--copper-deep)}
.sgroup h3{font-size:clamp(1.6rem,3vw,2.2rem);margin:.6rem 0 1.3rem}
.sgroup__list li{display:flex;gap:.8rem;padding:.7rem 0;border-bottom:1px solid var(--line-soft);color:var(--ink-2)}
.sgroup__list li::before{content:"";width:18px;height:18px;flex:0 0 auto;margin-top:2px;border-radius:5px;background:var(--copper-wash);border:1px solid rgba(180,83,30,.35);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 6.2l2.5 2.5L10 3.5' fill='none' stroke='%23B4531E' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}

/* ---------- Governance / assurance ---------- */
.gov{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem}
.gov__card{border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;background:var(--alu-0);box-shadow:var(--shadow-sm)}
.gov__val{font-family:var(--font-display);font-weight:700;font-size:1.8rem;color:var(--copper);letter-spacing:-.02em}
.gov__card h3{font-size:1.1rem;margin:.7rem 0 .5rem}
.gov__card p{color:var(--muted);font-size:.92rem}

/* ---------- Compliance strip ---------- */
.compliance{display:flex;flex-wrap:wrap;gap:.8rem}
.chip{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.82rem;letter-spacing:.02em;padding:.6rem 1rem;border:1px solid var(--line);border-radius:999px;background:var(--alu-0);color:var(--ink-2)}
.chip::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--copper)}

/* ---------- Split feature (about) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.split__media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:4/5}
.split__media img{width:100%;height:100%;object-fit:cover}
.factlist{margin-top:1.6rem;border-top:1px solid var(--line)}
.factlist>div{display:flex;justify-content:space-between;gap:1rem;padding:.9rem 0;border-bottom:1px solid var(--line);font-size:.95rem}
.factlist dt{color:var(--muted);font-family:var(--font-mono);font-size:.8rem;letter-spacing:.03em;text-transform:uppercase}
.factlist dd{margin:0;text-align:right;font-weight:500}

/* ---------- CTA band ---------- */
.cta{position:relative;overflow:hidden;background:var(--graphite);color:#fff;border-radius:var(--radius-lg)}
.cta__bg{position:absolute;inset:0;opacity:.22}
.cta__bg img{width:100%;height:100%;object-fit:cover}
.cta__inner{position:relative;z-index:1;padding:clamp(2.5rem,6vw,4.5rem);text-align:center}
.cta h2{font-size:clamp(2rem,4vw,3rem);margin-bottom:1rem}
.cta p{color:var(--alu-4);max-width:52ch;margin:0 auto 2rem}
.cta .btn--ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.cta .btn--ghost:hover{border-color:#fff}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:start}
.form{background:var(--alu-0);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(1.6rem,3vw,2.4rem);box-shadow:var(--shadow-sm)}
.field{margin-bottom:1.2rem}
.field label{display:block;font-family:var(--font-display);font-weight:500;font-size:.92rem;margin-bottom:.45rem}
.field .req{color:var(--copper)}
.field input,.field textarea,.field select{
  width:100%;font-family:var(--font-body);font-size:1rem;color:var(--ink);
  background:var(--alu-1);border:1px solid var(--alu-4);border-radius:var(--radius-sm);
  padding:.85rem 1rem;transition:border-color .25s,box-shadow .25s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--copper);box-shadow:0 0 0 3px rgba(180,83,30,.15)}
.field textarea{min-height:140px;resize:vertical}
.field.has-error input,.field.has-error textarea{border-color:#c0392b}
.field__err{color:#c0392b;font-size:.85rem;margin-top:.35rem;font-weight:500}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.form-note{font-size:.85rem;color:var(--muted-2);margin-top:.5rem}
.alert{padding:1rem 1.2rem;border-radius:var(--radius-sm);margin-bottom:1.5rem;font-weight:500;font-size:.95rem;border:1px solid}
.alert--success{background:#eaf6ee;border-color:#8fca9f;color:#1c6b34}
.alert--error{background:#fbecea;border-color:#e2a49c;color:#a4291c}
.contact-aside{border:1px solid var(--line);border-radius:var(--radius-lg);padding:2rem;background:var(--alu-0)}
.contact-aside h3{font-size:1.2rem;margin-bottom:1rem}
.contact-aside .row{padding:1rem 0;border-top:1px solid var(--line)}
.contact-aside .row:first-of-type{border-top:0}
.contact-aside .k{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2)}
.contact-aside .v{margin-top:.3rem;font-weight:500}
.contact-aside a.v{color:var(--copper-deep)}

/* ---------- Footer ---------- */
.site-footer{background:var(--graphite);color:var(--alu-3);padding:4rem 0 2rem;margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:2.5rem}
.footer-brand .brand__name{color:#fff}.footer-brand .brand__sub{color:var(--muted-2)}
.footer-brand p{margin-top:1.1rem;color:var(--alu-4);font-size:.95rem;max-width:36ch}
.footer-col h4{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2);margin-bottom:1rem;font-weight:500}
.footer-col li{margin-bottom:.65rem}
.footer-col a{color:var(--alu-3);font-size:.95rem;transition:color .2s}
.footer-col a:hover{color:var(--copper-2)}
.footer-col .muted{color:var(--alu-4)!important}.footer-col .muted-2{color:var(--muted-2)!important}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;margin-top:3rem;padding-top:1.6rem;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem;color:var(--muted-2)}

/* ---------- Reveal motion (opt-in via JS) ---------- */
.js-motion [data-reveal]{opacity:0;transform:translateY(26px)}
.js-motion [data-reveal].in{opacity:1;transform:none;transition:opacity .8s var(--ease),transform .8s var(--ease)}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero__grid{grid-template-columns:1fr;gap:2rem}
  .hero__panel{aspect-ratio:16/10;max-height:320px}
  .hero__intro{max-width:none}
  .pillars,.corridors,.split,.process__wrap,.contact-grid{grid-template-columns:1fr;gap:2rem}
  .process__sticky{position:static;display:flex;align-items:baseline;gap:1.5rem}
  .process__step{opacity:1}
  .metals{grid-template-columns:repeat(2,1fr)}
  .gov{grid-template-columns:repeat(2,1fr)}
  .dcards{grid-template-columns:1fr;gap:1.4rem}
  .stats{grid-template-columns:repeat(2,1fr)}
  .sgroup{grid-template-columns:1fr;gap:1.5rem}
  .sgroup:nth-child(even) .sgroup__media{order:0}
}
@media (max-width:720px){
  .nav__links{position:fixed;inset:74px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--alu-0);border-bottom:1px solid var(--line);padding:.5rem 24px 1.5rem;
    transform:translateY(-120%);transition:transform .4s var(--ease);box-shadow:var(--shadow-lg);max-height:calc(100vh - 74px);overflow:auto}
  .nav__links.open{transform:translateY(0)}
  .nav__link{padding:1rem .3rem;font-size:1.1rem;border-bottom:1px solid var(--line-soft)}
  .nav__link::after{display:none}
  .nav__cta{margin:1rem 0 0}.nav__cta .btn{width:100%;justify-content:center}
  .nav__toggle{display:flex}
  .nav__toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav__toggle.open span:nth-child(2){opacity:0}
  .nav__toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}
@media (max-width:480px){
  body{font-size:16px}
  .stats,.metals{grid-template-columns:1fr}
  .gov{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
  .footer-brand{grid-column:1 / -1}
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .marquee__track{animation:none;transform:none}
  .js-motion [data-reveal]{opacity:1!important;transform:none!important}
}