/* ============================================================
   POLARARC — site styles
   Design system: glacial navy + ice-cyan, aurora-arc signature.
   Display: Space Grotesk · Body: IBM Plex Sans · Data: IBM Plex Mono
   ============================================================ */

:root {
  /* colour */
  --navy:        #0B2545;
  --navy-2:      #102E58;   /* lifted panel on dark */
  --steel:       #1E466B;
  --ice:         #2BB3DC;   /* accent cyan */
  --ice-bright:  #7BD8F0;   /* glints / links on dark */
  --frost:       #F4F8FC;   /* cool near-white surface */
  --frost-2:     #E9F1F8;   /* subtle fill on light */
  --frost-line:  #D5E1ED;   /* hairlines on light */
  --ink:         #0B2545;   /* text on light */
  --ink-soft:    #46596E;   /* secondary text on light */
  --on-dark:     #E8F2FA;   /* text on navy */
  --on-dark-soft:#9FB6CC;   /* secondary text on navy */
  --line-dark:   rgba(123,216,240,.16);

  /* type */
  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
  --font-body:    'IBM Plex Sans', ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
  --font-mono:    'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* shape */
  --radius:   14px;
  --radius-sm:10px;
  --maxw:     1140px;
  --shadow:   0 1px 2px rgba(11,37,69,.04), 0 12px 30px -16px rgba(11,37,69,.18);
  --shadow-lg:0 1px 2px rgba(11,37,69,.05), 0 28px 60px -28px rgba(11,37,69,.30);
}

/* ---------- reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--frost);
  color: var(--ink);
  line-height: 1.62;
  font-size: 1.287rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.08; letter-spacing: -0.01em; color: var(--ink); }
strong { font-weight: 600; }
::selection { background: var(--ice); color: #06203A; }

/* keyboard focus */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 28px; }
.section { padding-block: clamp(3.6rem, 7vw, 6.5rem); }
.section--navy { background: var(--navy); color: var(--on-dark); }
.section--navy h1, .section--navy h2, .section--navy h3, .section--navy h4 { color: #fff; }
.section--frost2 { background: var(--frost-2); }
.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head.center { margin-inline: auto; text-align: center; }

/* ---------- type helpers ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.792rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--steel);
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: 1.1rem;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--ice); display: inline-block; }
.section--navy .eyebrow { color: var(--ice-bright); }
.hero .eyebrow, .page-head .eyebrow { color: #fff; }
.hero .eyebrow { font-size: clamp(.86rem, 1.5vw, 1.05rem); letter-spacing: .15em; margin-bottom: 1.35rem; justify-content: center; }
.hero .eyebrow::before, .page-head .eyebrow::before { display: none; }

.h2 { font-size: clamp(1.87rem, 3.4vw, 2.97rem); }
.h3 { font-size: clamp(1.43rem, 2vw, 1.76rem); }
.lede { font-size: clamp(1.155rem, 1.5vw, 1.342rem); color: var(--ink-soft); line-height: 1.6; }
.section--navy .lede { color: var(--on-dark-soft); }
.muted { color: var(--ink-soft); }
.mono { font-family: var(--font-mono); }
.nowrap { white-space: nowrap; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-body); font-weight: 600; font-size: 1.186rem;
  padding: .85rem 1.4rem; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; transition: transform .15s ease, background .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease;
  line-height: 1; white-space: nowrap;
}
.btn .arr { transition: transform .2s ease; }
.btn:hover .arr { transform: translateX(3px); }
.btn-sm { padding: .62rem 1rem; font-size: 1.089rem; }
.btn-primary { background: var(--ice); color: #06203A; box-shadow: 0 8px 22px -10px rgba(43,179,220,.7); }
.btn-primary:hover { background: #45c2e6; transform: translateY(-1px); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--steel); transform: translateY(-1px); }
.btn-outline { background: transparent; border-color: rgba(123,216,240,.45); color: var(--ice-bright); }
.btn-outline:hover { border-color: var(--ice-bright); background: rgba(123,216,240,.08); }
.btn-ghost-dark { background: transparent; border-color: var(--frost-line); color: var(--ink); }
.btn-ghost-dark:hover { border-color: var(--steel); background: #fff; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--frost-line);
  border-top: 3px solid var(--ice);
  box-shadow: 0 6px 24px -18px rgba(11,37,69,.35);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 70px; }
.brand { display: inline-flex; align-items: center; gap: .62rem; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-word { font-family: var(--font-display); font-weight: 700; font-size: 1.18rem; letter-spacing: .02em; }
.brand-word-1 { color: #fff; }
.brand-word-2 { color: var(--ice); }
.brand-logo { height: 34px; width: auto; display: block; }
.site-footer .brand-logo { height: 30px; }
@media (max-width: 640px) { .brand-logo { height: 30px; } }

.site-nav { display: flex; align-items: center; gap: .35rem; }
.nav-link {
  font-size: 1.162rem; font-weight: 500; color: var(--ink-soft);
  padding: .55rem .8rem; border-radius: 8px; transition: color .15s ease, background .15s ease;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); }
.nav-link.active::after {
  content: ""; display: block; height: 2px; width: 20px; margin: 4px auto 0;
  background: var(--ice); border-radius: 2px;
}
.nav-cta { margin-left: .6rem; }

.nav-toggle { display: none; background: transparent; border: 1px solid var(--frost-line); border-radius: 9px; padding: .5rem; cursor: pointer; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; transition: .25s ease; }
.nav-toggle span + span { margin-top: 4px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero { position: relative; background: var(--navy); color: var(--on-dark); overflow: hidden; isolation: isolate; }
.hero::after { /* fade into next section */
  content: ""; position: absolute; inset-inline: 0; bottom: 0; height: 120px;
  background: linear-gradient(to bottom, transparent, rgba(244,248,252,.0)); pointer-events: none;
}
.hero-arcs { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-arcs svg { position: absolute; right: -8%; top: 50%; transform: translateY(-50%); width: min(120vh, 1100px); height: auto; opacity: .9; }
.hero-grain { position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 80% at 78% 38%, rgba(43,179,220,.16), transparent 60%),
    radial-gradient(40% 60% at 12% 90%, rgba(30,70,107,.5), transparent 70%);
}
.hero-inner { position: relative; z-index: 1; padding-block: clamp(4.5rem, 10vw, 8.5rem); max-width: 60rem; margin-inline: auto; text-align: center; }
.hero h1 { max-width: 20ch; margin-inline: auto; }
.hero h1 { font-size: clamp(2.75rem, 6.2vw, 5.17rem); font-weight: 600; color: #fff; letter-spacing: -0.02em; line-height: 1.02; }
.hero h1 .accent { color: var(--ice); }
.hero-sub { margin-top: 1.4rem; margin-inline: auto; font-size: clamp(1.1rem, 1.35vw, 1.276rem); color: var(--on-dark-soft); max-width: 60ch; line-height: 1.55; }
.hero-cta { margin-top: 2.2rem; display: flex; flex-wrap: wrap; gap: .85rem; justify-content: center; }
.hero-meta { margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--line-dark); }
.hero-meta .eyebrow-meta { margin-bottom: 0; color: var(--on-dark); font-size: clamp(.62rem, 1.15vw, .84rem); letter-spacing: .1em; white-space: nowrap; }
.hero-meta .eyebrow-meta::before { display: none; }

/* arc animation */
@media (prefers-reduced-motion: no-preference) {
  .arc-rot { transform-box: fill-box; transform-origin: center; animation: arcspin 64s linear infinite; }
  .arc-rot.rev { animation-duration: 90s; animation-direction: reverse; }
  .arc-pulse { animation: arcpulse 7s ease-in-out infinite; }
}
@keyframes arcspin { to { transform: rotate(360deg); } }
@keyframes arcpulse { 0%,100% { opacity:.35 } 50% { opacity:.9 } }

/* ---------- page header (inner pages) ---------- */
.page-head { position: relative; background: var(--navy); color: var(--on-dark); overflow: hidden; isolation: isolate; }
.page-head .hero-arcs svg { width: min(80vh, 720px); opacity: .55; right: -6%; }
.page-head-inner { position: relative; z-index: 1; padding-block: clamp(3.4rem, 7vw, 5.4rem); max-width: 50rem; }
.page-head h1 { font-size: clamp(2.31rem, 4.6vw, 3.74rem); color: #fff; }
.page-head .lede { margin-top: 1.1rem; color: var(--on-dark-soft); }

/* ---------- generic grids ---------- */
.grid { display: grid; gap: 1.4rem; }
.grid > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* card base */
.card {
  background: #fff; border: 1px solid var(--frost-line); border-radius: var(--radius);
  padding: 1.7rem; box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card.hover:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: #bcd3e6; }
.section--navy .card { background: var(--navy-2); border-color: var(--line-dark); box-shadow: none; }

/* ---------- "why now" cards ---------- */
.why-card { display: flex; flex-direction: column; gap: .7rem; }
.why-date { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .06em; color: var(--ice-bright); }
.why-card h3 { font-size: 1.428rem; color: #fff; }
.why-card p { color: var(--on-dark-soft); font-size: 1.186rem; }

/* ---------- pillar cards (home) ---------- */
.pillar { position: relative; }
.pillar .num { font-family: var(--font-mono); font-size: .8rem; color: var(--ice); letter-spacing: .1em; }
.pillar h3 { margin-top: .5rem; font-size: 1.549rem; }
.pillar p { margin-top: .6rem; color: var(--ink-soft); font-size: 1.198rem; }
.pillar .more { margin-top: 1.1rem; font-weight: 600; font-size: 1.113rem; color: var(--steel); display: inline-flex; align-items: center; gap: .4rem; }
.pillar:hover .more .arr { transform: translateX(3px); }
.pillar .picon { width: 44px; height: 44px; border-radius: 11px; background: var(--frost-2); display: grid; place-items: center; margin-bottom: 1rem; }
.pillar .picon svg { width: 23px; height: 23px; stroke: var(--steel); }

/* ---------- detailed service blocks ---------- */
.svc { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(1.5rem, 4vw, 3.4rem); align-items: start; }
.svc + .svc { margin-top: clamp(2.4rem, 5vw, 4rem); padding-top: clamp(2.4rem, 5vw, 4rem); border-top: 1px solid var(--frost-line); }
.svc.flip .svc-media { order: 2; }
.svc-side .eyebrow { margin-bottom: .8rem; }
.svc-side h2 { font-size: clamp(1.65rem, 2.6vw, 2.31rem); }
.svc-side p { margin-top: .9rem; color: var(--ink-soft); }
.svc-media { background: var(--navy); border-radius: var(--radius); padding: 1.8rem; color: var(--on-dark); position: relative; overflow: hidden; }
.svc-media .badge { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ice-bright); }
.feature-list { list-style: none; padding: 0; margin: .4rem 0 0; display: grid; gap: .8rem; }
.feature-list li { position: relative; padding-left: 1.9rem; color: var(--on-dark); font-size: 1.174rem; line-height: 1.5; }
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: .15em; width: 1.15rem; height: 1.15rem;
  border-radius: 50%; background: rgba(43,179,220,.16);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237BD8F0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: .78rem; background-repeat: no-repeat; background-position: center;
}
.feature-list.dark-on-light li { color: var(--ink); }
.feature-list.dark-on-light li::before { background: var(--frost-2);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231E466B' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-size: .78rem; background-repeat: no-repeat; background-position: center; }

/* ---------- regulation grid ---------- */
.reg-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.reg-item { border: 1px solid var(--frost-line); border-radius: var(--radius-sm); padding: 1.15rem 1.2rem; background: #fff; }
.reg-item .ref { font-family: var(--font-mono); font-size: .76rem; color: var(--steel); letter-spacing: .02em; }
.reg-item h4 { margin-top: .35rem; font-size: 1.234rem; }
.reg-item p { margin-top: .35rem; font-size: 1.065rem; color: var(--ink-soft); line-height: 1.45; }
.reg-item.key { border-color: var(--ice); background: linear-gradient(180deg, #fff, #f2fbfe); box-shadow: 0 10px 30px -18px rgba(43,179,220,.55); }
.reg-item.key .ref { color: #1190b6; }
.reg-tag { display: inline-block; font-family: var(--font-mono); font-size: .64rem; letter-spacing: .12em; text-transform: uppercase; color: #0d7ea3; background: rgba(43,179,220,.14); padding: .15rem .5rem; border-radius: 5px; margin-top: .6rem; }
.reg-horizon { margin-top: 1.4rem; font-size: 1.113rem; color: var(--ink-soft); border-left: 3px solid var(--ice); padding-left: 1rem; }

/* ---------- process / steps ---------- */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.step { position: relative; padding-top: 2.4rem; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  position: absolute; top: 0; left: 0; font-family: var(--font-mono); font-size: 0.902rem;
  color: var(--ice); letter-spacing: .08em;
}
.step::after { content: ""; position: absolute; top: .45rem; left: 2.6rem; right: 0; height: 1px; background: var(--frost-line); }
.steps .step:last-child::after { display: none; }
.section--navy .step::after { background: var(--line-dark); }
.step h3 { font-size: 1.307rem; }
.step p { margin-top: .45rem; font-size: 1.125rem; color: var(--ink-soft); }
.section--navy .step p { color: var(--on-dark-soft); }

/* ---------- differentiators ---------- */
.diff { display: flex; gap: 1rem; align-items: flex-start; }
.diff .dot { flex: none; width: 38px; height: 38px; border-radius: 10px; background: rgba(43,179,220,.12); display: grid; place-items: center; }
.diff .dot svg { width: 19px; height: 19px; stroke: var(--ice); }
.section:not(.section--navy) .diff .dot { background: var(--frost-2); }
.section:not(.section--navy) .diff .dot svg { stroke: var(--steel); }
.diff h3 { font-size: 1.283rem; }
.diff p { margin-top: .3rem; font-size: 1.125rem; color: var(--ink-soft); }
.section--navy .diff p { color: var(--on-dark-soft); }

/* ---------- audience chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: .7rem; }
.chip { border: 1px solid var(--line-dark); border-radius: 999px; padding: .6rem 1.1rem; font-size: 1.113rem; color: var(--on-dark); display: inline-flex; align-items: center; gap: .55rem; }
.chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ice); }

/* ---------- CTA band ---------- */
.cta-band { position: relative; background: linear-gradient(120deg, var(--navy), var(--steel)); color: #fff; border-radius: var(--radius); padding: clamp(2.2rem, 5vw, 3.4rem); overflow: hidden; }
.cta-band h2 { color: #fff; font-size: clamp(1.76rem, 3vw, 2.53rem); max-width: 24ch; }
.cta-band p { margin-top: .8rem; color: var(--on-dark-soft); max-width: 46ch; }
.cta-band .hero-cta { margin-top: 1.8rem; }
.cta-arc { position: absolute; right: -60px; top: -60px; width: 320px; opacity: .5; pointer-events: none; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(1.6rem, 4vw, 3.2rem); align-items: start; }
.contact-grid > * { min-width: 0; }
.contact-card { display: grid; gap: 1.3rem; min-width: 0; }
.cinfo { display: flex; gap: .9rem; align-items: flex-start; min-width: 0; }
.cinfo > div { min-width: 0; }
.cinfo .ci-val { font-weight: 500; overflow-wrap: anywhere; }
.cinfo .ci-ic { flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--frost-2); display: grid; place-items: center; }
.cinfo .ci-ic svg { width: 19px; height: 19px; stroke: var(--steel); }
.cinfo .ci-label { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }
.cinfo a.ci-val:hover { color: var(--steel); text-decoration: underline; }
.ph { color: #8aa0b4; font-style: italic; } /* placeholder styling */

.form-card { background: #fff; border: 1px solid var(--frost-line); border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2rem); box-shadow: var(--shadow); }
.field { display: grid; gap: .4rem; margin-bottom: 1.1rem; }
.field label { font-size: 1.029rem; font-weight: 600; color: var(--ink); }
.field { min-width: 0; }
.field input, .field textarea, .field select {
  font-family: var(--font-body); font-size: 1.21rem; color: var(--ink);
  padding: .8rem .9rem; border: 1px solid var(--frost-line); border-radius: var(--radius-sm); background: var(--frost);
  transition: border-color .15s ease, box-shadow .15s ease;
  width: 100%; max-width: 100%; box-sizing: border-box;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--ice); box-shadow: 0 0 0 3px rgba(43,179,220,.16); outline: none; }
.field textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-note { font-size: 0.992rem; color: var(--ink-soft); margin-top: .4rem; }

/* ---------- footer ---------- */
.site-footer { background: var(--navy); color: var(--on-dark-soft); padding-block: clamp(3rem, 6vw, 4.5rem) 1.8rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 2rem; }
.footer-brand .brand { margin-bottom: 1rem; }
.footer-boiler { font-size: 1.113rem; line-height: 1.6; max-width: 34ch; }
.footer-col h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ice-bright); margin-bottom: 1rem; font-weight: 500; }
.footer-col ul { list-style: none; padding: 0; display: grid; gap: .6rem; }
.footer-col a, .footer-col li { font-size: 1.125rem; color: var(--on-dark-soft); }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem; margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--line-dark); }
.footer-bottom p { font-size: 0.992rem; color: var(--on-dark-soft); }
.footer-bottom .footer-fine { flex-basis: 100%; font-size: 0.92rem; line-height: 1.6; opacity: .85; margin-top: .5rem; }
.footer-bottom .footer-fine a { color: var(--ice-bright); text-decoration: underline; text-underline-offset: 2px; }
.footer-bottom .footer-fine a:hover { color: #fff; }
.footer-bottom .mono { font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }

/* ---------- legal ---------- */
.legal-updated { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 1.8rem; }
.legal-prose { max-width: 52rem; }
.legal-prose h2 { font-size: 1.5rem; margin-top: 2.4rem; }
.legal-prose p { margin-top: .85rem; color: var(--ink-soft); font-size: 1.186rem; }
.legal-prose a { color: var(--steel); text-decoration: underline; text-underline-offset: 2px; }
.legal-prose a:hover { color: var(--ink); }

/* ---------- reveal on scroll (progressive enhancement) ---------- */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .reveal.d1 { transition-delay: .06s; }
.js .reveal.d2 { transition-delay: .12s; }
.js .reveal.d3 { transition-delay: .18s; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .reg-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .step::after { display: none; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: .2rem;
    background: #fff; border-bottom: 1px solid var(--frost-line);
    padding: .8rem 28px 1.2rem; display: none;
  }
  .site-nav.open { display: flex; }
  .nav-link { padding: .8rem .4rem; border-radius: 8px; }
  .nav-link.active::after { display: none; }
  .nav-link.active { color: var(--steel); font-weight: 600; }
  .nav-cta { margin: .5rem 0 0; justify-content: center; }
  .svc, .svc.flip .svc-media { grid-template-columns: 1fr; order: 0; }
  .svc-media { order: -1; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .container { padding-inline: 20px; }
  .grid-2, .grid-3, .reg-grid, .steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-arcs svg { opacity: .5; right: -30%; }
}