:root {
  color-scheme: dark;
  font-family: Geist, Arial, sans-serif;
  --background: #040812;
  --panel: #0a1b35;
  --text: #f3f8ff;
  --muted: #afc3dd;
  --cyan: #49d4ff;
  --electric-blue: #2867ff;
  --silver: #d4e3f5;
  --paper: #f4f9ff;
  --ice: #e1eeff;
  --ink: #0a2145;
  --ink-muted: #425977;
  --ink-blue: #084fb7;
  --light-line: #aac1e1;
  --line: #76a9e944;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--background); color: var(--text); }
main { background: var(--paper); }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 5px; }
.skip { position: fixed; top: 1rem; left: 1rem; z-index: 5; padding: 1rem; background: var(--background); transform: translateY(-150%); }
.skip:focus { transform: none; }
.shell { width: min(100% - 112px, 1320px); margin-inline: auto; }
.header { background: linear-gradient(110deg, #030a19, #0a2c66); border-bottom: 1px solid #367cf4; }
.header-inner, .footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 84px; }
.brand { display: flex; align-items: center; min-height: 44px; flex-shrink: 0; }
.brand-logo { width: 126px; height: auto; }
nav { display: flex; gap: clamp(1rem, 3vw, 3rem); font-size: .88rem; color: var(--silver); }
nav a:hover, footer a:hover, .phone:hover { color: var(--cyan); }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 1.4rem; min-height: 50px; padding: 0 1.2rem; font-weight: 600; font-size: .9rem; transition: background-color .2s, color .2s; }
.outline { border: 1px solid #85b4f380; }
.outline:hover { background: #2867ff2e; }
.primary { background: #0954bf; color: #fff; border: 1px solid #0954bf; }
.primary:hover { background: #073f91; }
.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  align-content: center;
  min-height: 690px;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 55%, #124782 0%, #09264b 34%, transparent 68%),
    radial-gradient(ellipse at 9% 12%, #144a8a, transparent 50%),
    radial-gradient(ellipse at 100% 74%, #13478b, transparent 46%),
    #041025;
}
.hero-circuit { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; pointer-events: none; }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(ellipse at center, #071b369c 0%, #071b3670 30%, transparent 66%);
}
.hero-content { text-align: center; padding-block: clamp(45px, 7vw, 85px) 36px; }
.hero .label { justify-content: center; color: #a9d7ff; margin-bottom: 18px; }
.hero .primary { background: #f6fbff; color: #071a38; border: 1px solid #d2ecff; border-radius: 999px; box-shadow: 0 8px 30px #01091670; }
.hero .primary:hover { background: #a6eaff; }
.hero-logo { width: clamp(270px, 44vw, 580px); height: auto; margin: 24px auto; filter: drop-shadow(0 0 19px #339bff66); }
.label { display: flex; align-items: center; gap: 12px; margin: 0 0 22px; text-transform: uppercase; letter-spacing: .17em; font-size: .73rem; font-weight: 600; color: var(--silver); }
.label span { width: 28px; height: 2px; background: linear-gradient(90deg, var(--electric-blue), var(--cyan)); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { letter-spacing: -.074em; font-weight: 600; }
h1 { font-size: clamp(2.4rem, 4.6vw, 4.5rem); line-height: .98; margin-bottom: 0; letter-spacing: -.058em; }
.hero h1 span { color: #a8daff; font-weight: 500; }
h2 { font-size: clamp(2.65rem, 5.3vw, 5.2rem); line-height: .98; margin-bottom: 24px; }
h1 span, h2 span { color: var(--cyan); }
.hero-copy { font-size: clamp(1rem, 1.6vw, 1.3rem); line-height: 1.55; color: var(--silver); max-width: 39ch; margin: 0 auto 24px; }
.hero-foot { display: flex; align-items: center; justify-content: center; padding-block: 14px 22px; color: var(--silver); font-size: .75rem; }
.hero-foot a span { margin-left: 8px; color: var(--cyan); }
.solutions, .installation-grid, .contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(36px, 8vw, 128px); padding-block: clamp(65px, 9vw, 140px); }
.solutions, .installation {
  color-scheme: light;
  color: var(--ink);
  --muted: var(--ink-muted);
  --line: var(--light-line);
  --silver: var(--ink-blue);
  --cyan: var(--ink-blue);
}
.section-intro > p:last-child, .contact-grid > div > p:last-of-type { color: var(--muted); max-width: 330px; line-height: 1.65; }
.service-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; list-style: none; padding-block: 20px; font-size: clamp(1.1rem, 2vw, 1.65rem); letter-spacing: -.035em; }
summary::-webkit-details-marker { display: none; }
summary:hover, details[open] summary { color: var(--cyan); }
summary span::after { content: "+"; }
details[open] summary span::after { content: "−"; }
.service-list details[open] { background: linear-gradient(90deg, #e1eeff, transparent); }
details p { color: var(--muted); line-height: 1.65; max-width: 54ch; margin: -3px 24px 22px 0; }
.installation { background: var(--ice); border-block: 1px solid var(--line); }
.installation-grid { align-items: center; }
figure { position: relative; margin: 0; }
figure img { width: 100%; height: clamp(310px, 41vw, 560px); object-fit: cover; object-position: 50% 44%; }
figcaption { position: absolute; bottom: 14px; left: 14px; background: #040a18eb; color: var(--text); padding: 8px 12px; font-size: .75rem; }
ol { list-style: none; padding: 0; margin: 30px 0 0; counter-reset: steps; }
li { display: flex; gap: 18px; padding-block: 16px; border-top: 1px solid var(--line); counter-increment: steps; }
li::before { content: counter(steps, decimal-leading-zero); color: var(--cyan); font-size: .75rem; margin-top: 4px; }
h3 { font-size: 1.08rem; margin-bottom: 6px; }
li p { color: var(--muted); line-height: 1.5; margin-bottom: 0; }
.contact {
  background: linear-gradient(128deg, #061d41, #0b4398 55%, #071f4d);
  --muted: #deecff;
  --cyan: #83e7ff;
  --line: #b7d6ff80;
}
.contact-grid { align-items: center; }
.phone { display: inline-block; border-bottom: 1px solid var(--line); padding-block: 8px; }
form {
  display: grid;
  gap: 12px;
  padding: clamp(20px, 4vw, 40px);
  color-scheme: light;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid #c8defb;
  --muted: var(--ink-muted);
  --cyan: var(--ink-blue);
}
form label { font-size: .88rem; font-weight: 600; }
form label span, form p { color: var(--muted); font-weight: 400; }
select, input { min-height: 48px; width: 100%; padding: 10px 12px; background: #ffffff; border: 1px solid #6487b6; color: var(--ink); border-radius: 0; }
input::placeholder { color: var(--muted); }
form button { margin-top: 7px; }
form p { font-size: .75rem; margin: 0; line-height: 1.5; }
footer { border-top: 1px solid var(--line); font-size: .83rem; color: var(--muted); }
@media (max-width: 850px) {
  .shell { width: calc(100% - 48px); }
  .header-inner { min-height: 70px; }
  .solutions, .installation-grid, .contact-grid { gap: 35px; }
}
@media (max-width: 650px) {
  .shell { width: calc(100% - 36px); }
  .header-inner { min-height: 62px; gap: 12px; }
  .brand-logo { width: clamp(76px, 24vw, 108px); }
  .header-cta { display: none; }
  nav { gap: clamp(12px, 4vw, 22px); font-size: .82rem; }
  nav a { display: inline-flex; align-items: center; min-height: 44px; }
  .hero { min-height: 0; }
  .hero-content { padding-block: 45px 22px; }
  .hero .label { margin-bottom: 15px; font-size: .66rem; }
  h1 { font-size: clamp(2rem, 8.6vw, 3.55rem); }
  .hero-logo { width: min(84%, 380px); margin-block: 23px; }
  .hero-copy { max-width: 29ch; margin-bottom: 20px; }
  .hero-foot { padding-block: 4px 18px; }
  .hero-foot a { display: inline-flex; align-items: center; min-height: 44px; }
  .solutions, .installation-grid, .contact-grid { grid-template-columns: 1fr; gap: 24px; }
  .installation-copy { grid-row: 1; }
  .footer-inner { flex-wrap: wrap; padding-block: 20px; }
  .footer-inner > span { flex: 0 0 100%; }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-content > * { animation: rise-in .7s cubic-bezier(.22, .61, .36, 1) backwards; }
  .hero-content h1 { animation-delay: .08s; }
  .hero-logo { animation-delay: .16s; }
  .hero-copy { animation-delay: .24s; }
  .hero-content .button { animation-delay: .31s; }
  .enter-view { animation: rise-in .65s cubic-bezier(.22, .61, .36, 1) backwards; }
  details[open] > p { animation: rise-in .25s ease-out; }
  .button span { transition: transform .22s ease; }
  .button:hover span, .button:focus-visible span { transform: translate(3px, -2px); }
}
@keyframes rise-in {
  from { opacity: .15; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}