:root {
  --purple: #32127a;
  --purple-dark: #24105a;
  --yellow: #ffc400;
  --red: #d7192e;
  --ink: #1f2430;
  --muted: #626979;
  --light: #f7f7fb;
  --border: #e8e8ef;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.6;
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  box-shadow: 0 2px 16px rgba(30, 20, 70, .08);
}
.brand-mark {
  color: var(--purple);
  font-weight: 900;
  letter-spacing: .04em;
  font-size: 1.5rem;
}
.nav-link { font-weight: 600; color: #333 !important; }
.nav-link:hover { color: var(--purple) !important; }
.btn-primary-custom {
  background: var(--purple);
  border: 2px solid var(--purple);
  color: #fff;
  font-weight: 700;
  border-radius: 8px;
  padding: .65rem 1.15rem;
}
.btn-primary-custom:hover { background: var(--purple-dark); border-color: var(--purple-dark); color: #fff; }
.btn-outline-custom {
  border: 2px solid var(--purple);
  color: var(--purple);
  font-weight: 700;
  border-radius: 8px;
  padding: .65rem 1.15rem;
}
.btn-outline-custom:hover { background: var(--purple); color: #fff; }

.hero-section {
  padding: 48px 0 68px;
  background: linear-gradient(180deg, #fff 0%, #faf9ff 100%);
  border-bottom: 1px solid var(--border);
}
.logo-wrap {
  max-width: 1050px;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  padding: 18px 20px 12px;
  box-shadow: 0 18px 50px rgba(50,18,122,.10);
}
.arcdt-logo {
  display: block;
  width: 100%;
  max-height: 650px;
  object-fit: contain;
  margin: 0 auto;
}
.hero-tagline {
  margin: 22px 0 22px;
  color: var(--purple);
  font-size: clamp(1.15rem, 2.2vw, 1.65rem);
  font-weight: 700;
}

.info-section { padding: 82px 0; }
.section-heading { max-width: 820px; margin: 0 auto 34px; }
.eyebrow {
  display: inline-block;
  color: var(--red);
  font-size: .78rem;
  letter-spacing: .14em;
  font-weight: 800;
  margin-bottom: 8px;
}
.section-heading h1, .address-card h2, .contact-card h2 {
  font-weight: 800;
  color: var(--purple-dark);
}
.section-heading h1 { font-size: clamp(1.8rem, 4vw, 2.7rem); }
.section-heading p { color: var(--muted); font-size: 1.05rem; }
.info-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 12px 35px rgba(30, 20, 70, .07);
}
.info-card h2 { font-size: 1.25rem; margin: 18px 0 8px; color: var(--purple-dark); }
.info-card p { color: var(--muted); }
.info-card a { color: var(--purple); text-decoration: none; font-weight: 700; }
.icon-circle {
  width: 52px; height: 52px; border-radius: 50%; display: grid; place-items: center;
  color: #fff; font-weight: 900; font-size: 1.2rem;
}
.icon-circle.purple { background: var(--purple); }
.icon-circle.yellow { background: var(--yellow); color: #3b2b00; }
.icon-circle.red { background: var(--red); }

.contact-section {
  padding: 82px 0;
  background: var(--light);
}
.address-card, .contact-card {
  border-radius: 18px;
  padding: clamp(28px, 5vw, 48px);
}
.address-card {
  background: var(--purple);
  color: #fff;
}
.address-card h2 { color: #fff; margin-bottom: 20px; }
.address-card address { font-style: normal; font-size: 1.08rem; margin-bottom: 28px; }
.contact-card { background: #fff; border: 1px solid var(--border); }
.contact-item {
  padding: 15px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.contact-item:last-child { border-bottom: 0; }
.contact-label { font-size: .78rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-weight: 800; }
.contact-item a { color: var(--purple); font-weight: 700; text-decoration: none; }
.contact-item a:hover { text-decoration: underline; }

.footer {
  background: #fff;
  padding: 42px 0 28px;
  border-top: 1px solid var(--border);
}
.footer-logo { color: var(--purple); font-size: 2rem; font-weight: 900; letter-spacing: .05em; }
.footer p { color: var(--muted); }
.footer .tagline-small { color: var(--red); font-weight: 700; }
.footer-line { height: 3px; width: 90px; margin: 20px auto; background: var(--yellow); border-radius: 5px; }
.copyright { font-size: .85rem; }

@media (max-width: 767.98px) {
  .hero-section { padding: 24px 0 42px; }
  .logo-wrap { padding: 8px 6px; border-radius: 14px; box-shadow: 0 10px 30px rgba(50,18,122,.08); }
  .arcdt-logo { max-height: 520px; }
  .hero-tagline { margin-top: 18px; }
  .info-section, .contact-section { padding: 58px 0; }
  .info-card { padding: 24px; }
  .navbar .container { padding-left: 18px; padding-right: 18px; }
}


.developed-by { font-size: .85rem; color: var(--muted); }
.developed-by a { color: var(--purple); font-weight: 800; text-decoration: none; }
.developed-by a:hover { text-decoration: underline; }