/* ========== AHT shared design system ========== */
:root{
  --bg:#f4f6fb;
  --bg-2:#e8edf4;
  --surface:#ffffff;
  --surface-2:#eef2f8;
  --ink:#0e1420;
  --ink-2:#263045;
  --muted:#5c6478;
  --muted-2:#8b92a5;
  --rule:rgba(3,78,169,0.16);
  --rule-soft:rgba(3,78,169,0.08);
  --brand-blue:#034EA9;
  --brand-blue-2:#023d85;
  --brand-sky:#ACE9FB;
  --brand-red:#FF2E17;
  --brand-red-2:#d8260e;
  --accent:#FF2E17;
  --accent-2:#d8260e;
  --accent-ink:#ffffff;
  --font-display:"Fraunces","Times New Roman",serif;
  --font-body:"Inter",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased}
body{overflow-x:hidden}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
::selection{background:var(--accent);color:var(--accent-ink)}
img{max-width:100%;display:block}

.container{max-width:1320px;margin:0 auto;padding:0 32px;position:relative}

body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.45;mix-blend-mode:multiply;
  background-image:
    radial-gradient(circle at 15% 25%, rgba(90,80,60,0.05) 0, transparent 55%),
    radial-gradient(circle at 85% 75%, rgba(90,80,60,0.04) 0, transparent 55%);
}

/* ---------- LOGO (AHT lockup snippet) ---------- */
.caliper-logo{display:flex;align-items:center;gap:14px;font-family:var(--font-body);font-weight:700;letter-spacing:.02em;color:var(--ink);text-decoration:none}
.caliper-mark{
  width:44px;height:44px;flex:0 0 auto;display:block;object-fit:contain;
  transition:transform .4s cubic-bezier(.2,.9,.2,1);
}
.caliper-logo:hover .caliper-mark{transform:rotate(-6deg)}
.logo-words{display:flex;flex-direction:column;line-height:1.15;white-space:nowrap}
.logo-words b{font-family:var(--font-body);font-size:14px;font-weight:700;letter-spacing:.02em;line-height:1.15;color:var(--brand-blue);text-transform:uppercase;white-space:nowrap}
.logo-words b .hc{font-style:normal;color:#E0331F}
.logo-words span{font-family:var(--font-body);font-size:9.5px;font-weight:500;letter-spacing:0.18em;color:var(--muted);text-transform:uppercase;margin-top:6px;white-space:nowrap}
.nav .caliper-mark{width:44px;height:44px}
.nav .logo-words b{font-size:13px}
.nav .logo-words span{font-size:9px;letter-spacing:.16em;margin-top:4px}
footer .caliper-mark{width:56px;height:56px}
footer .logo-words b{font-size:15px}

/* ---------- NAV ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.15);
  border-bottom:1px solid var(--rule-soft);
  transform:translateY(0);
  transition:transform .28s cubic-bezier(.2,.9,.2,1), box-shadow .2s, background .2s;
}
.nav.nav--hidden{transform:translateY(-100%)}
.nav.nav--scrolled{box-shadow:0 10px 30px -20px rgba(3,78,169,.25);background:color-mix(in srgb, var(--bg) 94%, transparent)}
/* Push page content down below fixed nav */
body{padding-top:92px}
@media (max-width:600px){body{padding-top:72px}}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:92px;gap:16px}
.nav-links{display:flex;gap:2px;align-items:center}
.nav-links > li{list-style:none;position:relative}
.nav-links a, .nav-links .navtop{
  padding:8px 14px;border-radius:6px;color:var(--ink-2);font-size:13.5px;font-weight:500;
  display:inline-flex;align-items:center;gap:6px;transition:color .15s, background .15s;
}
.nav-links a:hover, .nav-links .navtop:hover{color:var(--accent)}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{content:"";display:block;width:14px;border-bottom:2px solid var(--accent);margin:4px auto 0}
.nav-links .caret{width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);margin-top:-4px;transition:transform .2s}
.nav-links li:hover .caret{transform:rotate(225deg);margin-top:2px}

/* Dropdown */
.dropdown{
  position:absolute;top:calc(100% - 4px);left:50%;transform:translate(-50%, 8px);
  opacity:0;pointer-events:none;transition:opacity .18s, transform .18s;
  min-width:260px;background:var(--surface);border:1px solid var(--rule);
  box-shadow:0 14px 40px -18px rgba(14,20,32,0.25);padding:10px;
}
.nav-links li:hover .dropdown,
.nav-links li:focus-within .dropdown{opacity:1;pointer-events:auto;transform:translate(-50%, 0)}
.dropdown a{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:10px 12px;border-radius:4px;font-size:13.5px;color:var(--ink-2);
  font-weight:500;border:0;
}
.dropdown a:hover{background:var(--bg-2);color:var(--accent)}
.dropdown a::after{display:none}
.dropdown .dd-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:0.14em;color:var(--muted-2);text-transform:uppercase}
.dropdown a:hover .dd-sub{color:var(--accent)}

.nav-cta{display:flex;gap:10px;align-items:center}
.phone-cta{
  display:inline-flex;align-items:center;gap:10px;padding:10px 16px 10px 12px;
  background:var(--ink);color:var(--bg);border-radius:4px;font-weight:500;font-size:13.5px;white-space:nowrap;
  transition:background .15s;
}
.phone-cta:hover{background:var(--accent)}
.phone-cta .ring{
  width:22px;height:22px;border-radius:50%;background:var(--accent);display:grid;place-items:center;color:#fff;
  animation:ring 2.4s ease-in-out infinite;
}
.phone-cta:hover .ring{background:var(--ink)}
@keyframes ring{0%,100%{transform:rotate(0)}5%,15%{transform:rotate(-12deg)}10%,20%{transform:rotate(12deg)}25%{transform:rotate(0)}}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:4px;font-weight:500;font-size:13.5px;
  transition:transform .15s, background .15s, border-color .15s, color .15s;border:1px solid transparent;
}
.btn.primary{background:var(--ink);color:var(--bg);}
.btn.primary:hover{background:var(--accent)}
.btn.ghost{border-color:var(--rule);color:var(--ink)}
.btn.ghost:hover{border-color:var(--ink);background:var(--ink);color:var(--bg)}
.btn.accent{background:var(--accent);color:#fff}
.btn.accent:hover{background:var(--accent-2)}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}

/* ---------- PAGE HEADER (non-home pages) ---------- */
.page-head{
  padding:72px 0 40px;border-bottom:1px solid var(--rule);position:relative;
}
.crumbs{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.18em;color:var(--muted);
  text-transform:uppercase;display:flex;gap:10px;align-items:center;margin-bottom:22px
}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{opacity:.4}
.page-head h1{
  font-family:var(--font-display);font-weight:400;
  font-size:clamp(44px,5.6vw,84px);line-height:1.0;letter-spacing:-0.03em;margin:0 0 22px;
  text-wrap:balance;max-width:14ch;
}
.page-head h1 em{font-style:italic;color:var(--accent);font-weight:500}
.page-head .intro{color:var(--ink-2);font-size:17px;line-height:1.6;max-width:620px;margin:0 0 14px}
.page-head .meta{
  display:flex;gap:24px;flex-wrap:wrap;margin-top:32px;padding-top:24px;border-top:1px dashed var(--rule);
  font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:0.08em;text-transform:uppercase
}
.page-head .meta b{color:var(--ink);font-weight:500}
.page-head .meta.meta-solo{font-size:13px;letter-spacing:0.14em;gap:14px;align-items:baseline}
.page-head .meta.meta-solo span{display:inline-flex;align-items:baseline;gap:14px}
.page-head .meta.meta-solo b{font-family:var(--font-display);font-size:30px;letter-spacing:-0.02em;text-transform:none;color:var(--accent);font-weight:500;font-style:italic}

/* Tag / pill */
.tag{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 12px 6px 8px;border:1px solid var(--rule);border-radius:999px;
  background:rgba(255,255,255,0.7);backdrop-filter:blur(6px);
  font-family:var(--font-mono);font-size:10.5px;color:var(--muted);letter-spacing:0.12em;text-transform:uppercase;
}
.tag .num{background:var(--accent);color:var(--accent-ink);padding:2px 8px;border-radius:999px;font-weight:500}

/* Hero emergency / fast-fix block */
.hero-emergency{
  display:flex;align-items:flex-start;gap:14px;
  padding:18px 22px;margin:24px 0 28px;max-width:600px;
  border:1px solid var(--rule);border-left:3px solid var(--accent);
  background:rgba(255,255,255,0.78);backdrop-filter:blur(6px);
  box-shadow:0 8px 28px -18px rgba(3,78,169,.18);
}
.hero-emergency .emerg-pulse{
  width:11px;height:11px;border-radius:50%;background:var(--accent);
  margin-top:6px;flex:0 0 auto;
  box-shadow:0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent);
  animation:blip 1.8s ease-out infinite;
}
.hero-emergency .emerg-copy{display:flex;flex-direction:column;gap:6px;min-width:0}
.hero-emergency b{
  font-family:var(--font-display);font-weight:500;font-size:19px;
  letter-spacing:-0.01em;line-height:1.18;color:var(--ink);
}
.hero-emergency span{font-size:14.5px;line-height:1.55;color:var(--ink-2)}
.hero-emergency em{font-style:italic;color:var(--accent);font-weight:500}
@media (max-width:600px){
  .hero-emergency{padding:14px 16px}
  .hero-emergency b{font-size:17px}
  .hero-emergency span{font-size:13.5px}
}

/* ---------- SECTION SCAFFOLD ---------- */
section{padding:96px 0;position:relative}
.section-head{display:grid;grid-template-columns:1fr 1.2fr;gap:80px;margin-bottom:56px;align-items:end}
.section-num{font-family:var(--font-mono);font-size:11px;letter-spacing:0.18em;color:var(--accent);text-transform:uppercase}
.section-num::before{content:"§ ";opacity:.5}
h2.sec{font-family:var(--font-display);font-weight:400;font-size:clamp(36px,4.2vw,60px);line-height:1.04;letter-spacing:-0.025em;margin:14px 0 0;max-width:11ch;text-wrap:balance}
h2.sec em{font-style:italic;color:var(--accent)}
.section-head p{color:var(--muted);font-size:16px;line-height:1.6;max-width:560px;margin:0}

/* Placeholder tag */
.ph{display:inline-block;font-family:var(--font-mono);font-size:9.5px;letter-spacing:0.14em;padding:2px 6px;background:color-mix(in srgb, var(--accent) 15%, transparent);color:var(--accent-2);border:1px dashed var(--accent);text-transform:uppercase;border-radius:3px;vertical-align:middle;margin-right:6px}

/* Modality card grids (reused across pages) */
.cardgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mod-card{
  border:1px solid var(--rule);background:var(--surface);padding:28px;display:flex;flex-direction:column;gap:18px;
  transition:background .2s, border-color .2s, transform .2s;position:relative;min-height:320px;
}
.mod-card:hover{background:var(--surface-2);border-color:var(--ink);transform:translateY(-2px)}
.mod-card .kicker{font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.14em;color:var(--muted);text-transform:uppercase;display:flex;justify-content:space-between}
.mod-card .kicker b{color:var(--accent);font-weight:500}
.mod-card h3{margin:0;font-family:var(--font-display);font-weight:400;font-size:32px;letter-spacing:-0.02em;line-height:1.02}
.mod-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.55;flex:1}
.mod-card .cfoot{margin-top:auto;padding-top:16px;border-top:1px dashed var(--rule-soft);display:flex;justify-content:space-between;align-items:center;font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:0.08em;text-transform:uppercase}
.mod-card .cfoot b{color:var(--ink);font-weight:500}
.mod-card .cfoot .go{color:var(--accent);display:inline-flex;align-items:center;gap:6px;transition:gap .2s}
.mod-card:hover .cfoot .go{gap:10px}

/* ---------- STATS / STRIPS ---------- */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.stat{padding:40px 28px;border-right:1px solid var(--rule);display:flex;flex-direction:column;gap:14px}
.stat:last-child{border-right:0}
.stat .num{font-family:var(--font-display);font-weight:400;font-size:clamp(44px,4vw,64px);line-height:1;letter-spacing:-0.03em;color:var(--ink)}
.stat .num em{font-style:italic;color:var(--accent);font-weight:500}
.stat .lbl{font-family:var(--font-mono);font-size:10.5px;color:var(--muted);letter-spacing:0.14em;text-transform:uppercase}
.stat .sub{color:var(--muted);font-size:13px;line-height:1.55}

/* Ticker */
.ticker{
  border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
  display:flex;align-items:stretch;font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:0.1em;text-transform:uppercase;
  background:var(--surface);
}
.ticker > div{padding:18px 28px;border-right:1px solid var(--rule);flex:1;display:flex;gap:12px;align-items:center}
.ticker > div:last-child{border-right:0}
.ticker b{color:var(--ink);font-weight:500}
.blip{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 color-mix(in srgb, var(--accent) 50%, transparent);animation:blip 1.8s ease-out infinite;flex:0 0 auto}
@keyframes blip{0%{box-shadow:0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent)}100%{box-shadow:0 0 0 10px transparent}}

/* ---------- FOOTER ---------- */
footer{padding:72px 0 36px;border-top:1px solid var(--ink);margin-top:96px;background:var(--bg-2);position:relative;z-index:2}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:60px;margin-bottom:48px}
.foot-col h6{font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.14em;text-transform:uppercase;color:var(--muted);margin:0 0 18px}
.foot-col a{display:block;color:var(--ink-2);font-size:14px;padding:5px 0;transition:color .15s}
.foot-col a:hover{color:var(--accent)}
.foot-brand p{color:var(--muted);font-size:14px;max-width:380px;line-height:1.6;margin:18px 0 0}
.foot-contact{font-family:var(--font-mono);font-size:12px;color:var(--muted);line-height:1.8}
.foot-contact b{color:var(--ink);font-weight:500;display:block;margin-top:10px}
.foot-contact a:hover{color:var(--accent)}
.foot-big{
  font-family:var(--font-display);font-weight:400;font-size:clamp(26px,3.6vw,48px);line-height:1.1;letter-spacing:-0.02em;color:var(--ink);margin:0 0 36px;text-wrap:balance;
}
.foot-big em{font-style:italic;color:var(--accent)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--rule);padding-top:22px;color:var(--muted);font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.1em;text-transform:uppercase;flex-wrap:wrap;gap:12px}

/* Reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s, transform .7s}
.reveal.in{opacity:1;transform:none}

/* CTA banner */
.cta-banner{
  background:var(--ink);color:var(--bg);padding:64px;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;position:relative;overflow:hidden;
}
.cta-banner h3{font-family:var(--font-display);font-weight:400;font-size:clamp(32px,3.8vw,48px);letter-spacing:-0.025em;line-height:1.05;margin:0 0 12px}
.cta-banner h3 em{font-style:italic;color:var(--brand-sky)}
.cta-banner p{color:color-mix(in srgb, var(--bg) 72%, transparent);margin:0;max-width:440px;line-height:1.55;font-size:15px}
.cta-banner .cta-right{display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.cta-banner .cta-right .big-phone{
  font-family:var(--font-display);font-weight:400;font-size:34px;letter-spacing:-0.02em;color:var(--bg);
  display:inline-flex;align-items:center;gap:12px;transition:color .15s;
}
.cta-banner .cta-right .big-phone:hover{color:var(--accent)}
.cta-banner .cta-right .lbl{font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.14em;color:color-mix(in srgb, var(--bg) 60%, transparent);text-transform:uppercase}

/* Spec row (used on detail pages) */
.spec-sheet{
  border:1px solid var(--ink);background:var(--surface);padding:28px 32px;font-family:var(--font-mono);font-size:12.5px;
  box-shadow:12px 12px 0 -6px var(--accent);
}
.spec-sheet h4{font-family:var(--font-mono);font-weight:500;font-size:11px;letter-spacing:0.18em;text-transform:uppercase;color:var(--muted);margin:0 0 18px;padding-bottom:14px;border-bottom:1px solid var(--rule)}
.spec-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dotted var(--rule-soft)}
.spec-row .k{color:var(--muted);text-transform:uppercase;letter-spacing:0.08em;font-size:11px}
.spec-row .v{color:var(--ink);font-weight:500}
.spec-row .v.ok{color:var(--accent)}
.spec-foot{margin-top:20px;padding-top:14px;border-top:1px solid var(--rule);color:var(--muted-2);font-size:11px;display:flex;justify-content:space-between}

/* Mobile menu toggle (hidden on desktop) */
.nav-menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--rule);border-radius:6px;
  background:var(--surface);padding:0;cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:4px;
  transition:background .15s, border-color .15s;
}
.nav-menu-toggle span{
  width:18px;height:2px;background:var(--ink);display:block;border-radius:2px;
  transition:transform .25s cubic-bezier(.2,.9,.2,1), opacity .2s;
}
.nav--menu-open .nav-menu-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav--menu-open .nav-menu-toggle span:nth-child(2){opacity:0}
.nav--menu-open .nav-menu-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* Responsive */
@media (max-width:980px){
  /* Nav becomes: logo (flex:1) + phone + hamburger */
  .nav-menu-toggle{display:flex}
  .nav-inner{gap:12px}
  .nav-cta{order:2}
  .nav-menu-toggle{order:3}

  /* Mobile slide-in menu panel */
  .nav-links{
    display:flex !important;flex-direction:column;gap:0;
    position:fixed;top:92px;left:0;right:0;
    max-height:calc(100vh - 92px);overflow-y:auto;
    padding:24px 28px 40px;background:var(--surface);
    border-top:1px solid var(--rule);
    transform:translateY(-16px);opacity:0;pointer-events:none;
    transition:transform .28s cubic-bezier(.2,.9,.2,1), opacity .18s;
    z-index:49;
  }
  .nav--menu-open .nav-links{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links > li{width:100%;list-style:none}
  .nav-links > li + li{border-top:1px solid var(--rule-soft)}
  .nav-links a, .nav-links .navtop{
    display:flex;align-items:center;justify-content:space-between;
    padding:18px 4px;font-family:var(--font-display);font-weight:400;
    font-size:24px;letter-spacing:-0.01em;color:var(--ink);
    border-radius:0;border-bottom:0;
  }
  .nav-links a.active::after{display:none}
  .nav-links a.active{color:var(--accent)}
  .nav-links .caret{display:none}

  /* Expand dropdowns inline on mobile -- but only make them tappable
     when the menu is open. Without this scope, the dropdown links would
     intercept hero-area taps even though the menu panel is invisible. */
  .dropdown{
    position:static;transform:none;
    min-width:0;background:transparent;border:0;box-shadow:none;
    padding:0 0 12px 8px;display:flex;flex-direction:column;gap:2px;
    /* opacity:0 + pointer-events:none inherited from desktop base rule */
  }
  .nav--menu-open .dropdown{opacity:1;pointer-events:auto}
  .dropdown a{
    font-family:var(--font-body);font-weight:500;font-size:14.5px;
    padding:8px 8px;color:var(--muted);text-transform:none;letter-spacing:0;
    border-radius:4px;
  }
  .dropdown a:hover{background:var(--bg-2);color:var(--accent)}
  .dropdown .dd-sub{display:none}

  /* Layout grids */
  .cardgrid{grid-template-columns:1fr 1fr}
  .stats-row{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr;gap:40px}
  .section-head{grid-template-columns:1fr;gap:24px}
  .cta-banner{grid-template-columns:1fr;padding:40px}
  .cta-banner .cta-right{align-items:flex-start}
  .ticker{flex-direction:column}
  .ticker > div{border-right:0;border-bottom:1px solid var(--rule)}
}
@media (max-width:600px){
  .cardgrid{grid-template-columns:1fr}
  .nav-inner{height:72px;gap:8px}
  .nav-links{top:72px;max-height:calc(100vh - 72px);padding:16px 20px 32px}
  .phone-cta span.pnum{display:none}
  .phone-cta{padding:8px 10px}
  .nav .caliper-mark{width:40px;height:40px}
  .nav .logo-words b{font-size:11.5px}
  .nav .logo-words span{font-size:8px;letter-spacing:.14em}
  .nav-menu-toggle{width:36px;height:36px}
  /* Tighten page header + section padding on phones */
  .page-head{padding:40px 0 24px}
  section{padding:64px 0}
  .cta-banner{padding:28px}
  .cta-banner .cta-right .big-phone{font-size:26px}
  /* Installation page meta-solo keeps its size but wraps cleanly */
  .page-head .meta.meta-solo{flex-direction:column;gap:8px;align-items:flex-start}
  .page-head .meta.meta-solo b{font-size:26px}
}
/* Lock body scroll while mobile menu is open */
body.menu-open{overflow:hidden}