/* ============== ACE Industries (Clean Wireframe Implementation) ============== */
/* Design goals: flat, calm, scannable; avoid box-in-box; strong hierarchy.     */
:root{
  --bg:#ffffff;
  --ink-900:#0f172a; --ink-800:#1f2937; --ink-700:#334155; --ink-600:#475569; --ink-500:#64748b; --ink-400:#94a3b8;
  --metal-050:#f8fafc; --metal-075:#f5f7fb; --metal-100:#f1f5f9; --metal-150:#e8edf5; --metal-200:#e2e8f0; --metal-300:#cbd5e1;
  --brand:#0ea5e9; --brand-600:#0284c7;
  --s4:8px; --s6:12px; --s8:16px; --s10:20px; --s12:24px; --s16:32px; --s20:40px;
  --r1:8px; --r2:12px;
  --fs-sm:.925rem; --fs-base:1rem; --fs-h1:clamp(1.6rem,2vw+1rem,2.4rem); --fs-h2:clamp(1.2rem,1.2vw+1rem,1.6rem); --fs-h3:1.05rem;
  --container:1260px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:200ms; --dur-fast:120ms;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink-900);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,"Noto Sans",sans-serif;line-height:1.45}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-600);text-decoration:underline}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--s8)}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid var(--metal-200)}
.site-header .row{display:flex;align-items:center;justify-content:space-between;gap:var(--s8);padding:var(--s8) 0}
.logo{display:flex;align-items:center;gap:var(--s6);font-weight:800;letter-spacing:.4px;color:var(--ink-900)}
.logo .mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#0ea5e9,#38bdf8);display:grid;place-items:center;color:#fff;font-weight:900}
.nav{display:flex;align-items:center;gap:var(--s8)}
.nav a{color:var(--ink-700);padding:6px 10px;border-radius:8px;position:relative;transition:background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease)}
.nav a:hover{background:var(--metal-100);text-decoration:none;color:var(--ink-900)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:10px 14px;border:1px solid var(--metal-200);background:#fff;color:var(--ink-900);position:relative;transition:transform var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease)}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(15,23,42,.1);text-decoration:none}
.btn:active{transform:translateY(0)}
.btn.primary{background:linear-gradient(135deg,#0ea5e9,#38bdf8);color:#fff;border-color:transparent}

/* Layout */
.hero{padding:var(--s12) 0 var(--s8)}
.hero h1{font-size:var(--fs-h1);margin:0 0 var(--s6)}
.hero p{color:var(--ink-700);margin:0}
.main{display:grid;grid-template-columns: 300px 1fr;gap:var(--s12);padding:var(--s12) 0}
@media (max-width: 960px){ .main{grid-template-columns:1fr} }

/* Sidebar (flat list group) */
.sidebar{position:sticky;top:76px;align-self:start;border:1px solid var(--metal-200);border-radius:var(--r2);background:#fff}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:var(--s8);border-bottom:1px solid var(--metal-200)}
.sidebar .list{max-height:calc(100vh - 200px);overflow:auto;padding:0}
.item{all:unset;display:block;width:100%;padding:12px 14px;border-bottom:1px solid var(--metal-200);cursor:pointer;color:var(--ink-800)}
.item:last-child{border-bottom:none}
.item:hover{background:var(--metal-100)}
.item:focus-visible{outline:2px solid rgba(14,165,233,.35);outline-offset:2px}
.item[aria-current="true"]{background:#fff;box-shadow:inset 3px 0 0 var(--brand);color:var(--brand-600);font-weight:600}

/* Mobile drawer toggle */
.sidebar-toggle{display:none}
@media (max-width: 960px){
  .sidebar{position:fixed;inset:auto 0 0 0;top:auto;transform:translateY(100%);transition:transform var(--dur) var(--ease);z-index:60;border-top-left-radius:var(--r2);border-top-right-radius:var(--r2)}
  .sidebar.open{transform:translateY(0)}
  .sidebar-toggle{display:flex;position:sticky;top:56px;z-index:55;justify-content:flex-end;margin:-8px 0 8px}
}

/* Panel (single surface) */
.panel{border:1px solid var(--metal-200);border-radius:var(--r2);background:#fff}
.panel .head{padding:var(--s10);border-bottom:1px solid var(--metal-200);display:flex;align-items:center;justify-content:space-between;gap:var(--s8)}
.panel .title{margin:0;font-size:var(--fs-h2)}
.panel .sub{margin:4px 0 0;color:var(--ink-600)}
.panel .body{padding:var(--s10);display:grid;gap:var(--s12)}

/* Quick links (sticky) */
.quicklinks{position:sticky;top:76px;background:linear-gradient(180deg,#ffffff 60%,rgba(255,255,255,.92));padding:8px;border-bottom:1px solid var(--metal-200);z-index:5}
.quicklinks a{margin-right:12px;color:var(--ink-700);font-size:var(--fs-sm)}
.quicklinks a.active{color:var(--brand-600);font-weight:600}

/* Hero split: outcomes + image */
.hero-split{display:grid;grid-template-columns: 1.1fr .9fr;gap:var(--s12);align-items:center}
@media (max-width: 960px){ .hero-split{grid-template-columns:1fr} }
.outcomes{display:flex;flex-wrap:wrap;gap:10px}
.outcome{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--metal-200);border-radius:999px;padding:8px 12px;background:var(--metal-100);color:var(--ink-700);font-size:var(--fs-sm)}
.ph-img{position:relative;width:100%;aspect-ratio:16/9;border-radius:12px;background:linear-gradient(180deg,#f6fafe,#fbfdff);border:1px solid var(--metal-200)}
.ph-img::before{content:"INDUSTRY IMAGE";position:absolute;inset:0;display:grid;place-items:center;color:var(--ink-400);letter-spacing:.1em}

/* Section headings */
.section h3{margin:0 0 8px;font-size:var(--fs-h3)}
.section .desc{color:var(--ink-600);margin:0}

/* Solutions list group (rows, not cards) */
.solutions{border:1px solid var(--metal-200);border-radius:12px;overflow:hidden}
.sol-row{display:grid;grid-template-columns: 72px 1fr auto;gap:12px;align-items:center;padding:14px;border-bottom:1px solid var(--metal-200)}
.sol-row:last-child{border-bottom:none}
.sol-thumb{width:56px;height:56px;border-radius:10px;background:var(--metal-100);border:1px solid var(--metal-200)}
.sol-main h4{margin:0 0 4px;font-size:1rem}
.sol-main ul{margin:0;padding-left:18px;color:var(--ink-700)}
.sol-act a{white-space:nowrap}

/* Proof: clients + testimonial */
.clients{display:grid;grid-template-columns: repeat(6, 1fr);gap:10px}
@media (max-width: 800px){ .clients{grid-template-columns: repeat(3, 1fr)} }
.client{height:44px;border:1px dashed var(--metal-200);border-radius:8px;display:grid;place-items:center;color:var(--ink-400);font-size:.9rem;background:#fff}
.testimonial{border-left:3px solid var(--brand);padding-left:12px;color:var(--ink-800);font-style:italic}

/* Compliance */
.compact-list{margin:0;padding-left:18px;color:var(--ink-700)}

/* Downloads list */
.downloads{border:1px solid var(--metal-200);border-radius:12px;overflow:hidden}
.dl-row{display:grid;grid-template-columns: 1fr auto;gap:12px;align-items:center;padding:12px;border-bottom:1px solid var(--metal-200)}
.dl-row:last-child{border-bottom:none}
.dl-meta{color:var(--ink-600);font-size:var(--fs-sm)}

/* FAQ (simple accordions) */
.faq{border:1px solid var(--metal-200);border-radius:12px;overflow:hidden}
.faq details{border-bottom:1px solid var(--metal-200);padding:10px 14px}
.faq details:last-child{border-bottom:none}
.faq summary{cursor:pointer;font-weight:600;color:var(--ink-800)}
.faq p{margin:8px 0 0;color:var(--ink-700)}

/* Mobile sticky CTA */
.sticky-cta{position:sticky;bottom:0;padding:var(--s8);background:linear-gradient(180deg,transparent,#fff);display:none}
@media (max-width: 960px){ .sticky-cta{display:flex;justify-content:flex-end} }

.site-footer{border-top:1px solid var(--metal-200);margin-top:var(--s20);background:linear-gradient(180deg,var(--metal-100),var(--metal-050))}
.site-footer .micro{padding:var(--s8) 0;color:var(--ink-600);font-size:var(--fs-sm);display:flex;justify-content:space-between;gap:var(--s8);flex-wrap:wrap}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){ *{transition:none !important; animation:none !important;} }