/* DVSYS Inc. — single-page site. No frameworks, no external assets.
   Brand palette from the DVSYS logo: brand blue #1E88C7 (light #4DB2E8),
   slate #35444D for headings, dark slate footer. */
:root {
  --brand: #1E88C7;
  --brand-light: #4DB2E8;
  --brand-dark: #0F5A86;      /* AA-safe blue for text/links on light backgrounds */
  --brand-pale: #E7F3FB;
  --slate: #35444D;
  --slate-dark: #22303A;
  --ink: #2E3A42;
  --muted: #51636E;
  --bg: #FDFDFE;
  --bg-alt: #EFF6FA;
  --border: #D8E6EF;
  --radius: 18px;
  --wrap: 68rem;
  --shadow-soft: 0 10px 30px rgba(53, 68, 77, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.25rem; }
h1, h2, h3 { line-height: 1.25; color: var(--slate); }
h1 { font-size: clamp(2.1rem, 4.8vw, 3.2rem); margin: 0 0 1.1rem; letter-spacing: -0.015em; }
h2 { font-size: clamp(1.55rem, 3vw, 2.05rem); margin: 0 0 1.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; margin: 0 0 0.6rem; }
p { margin: 0 0 1rem; }
a { color: var(--brand-dark); }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--brand-dark);
  outline-offset: 2px;
  border-radius: 6px;
}
::selection { background: var(--brand-pale); }
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--brand-dark); color: #fff; padding: 0.6rem 1rem; z-index: 100;
  border-radius: 0 0 12px 0;
}
.skip-link:focus { left: 0; top: 0; color: #fff; }

/* Section eyebrow labels */
.eyebrow {
  margin: 0 0 0.55rem;
  font-size: 0.78rem; font-weight: 800;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--brand-dark);
}
.eyebrow::before {
  content: ""; display: inline-block; vertical-align: middle;
  width: 1.6rem; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--brand-light), var(--brand));
  margin-right: 0.55rem;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(253, 253, 254, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 14px rgba(53, 68, 77, 0.05);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-top: 0.65rem; padding-bottom: 0.65rem; flex-wrap: wrap;
}
.logo {
  display: inline-flex; align-items: baseline; gap: 0.55rem;
  font-size: 1.45rem; font-weight: 800; letter-spacing: -0.01em;
  color: var(--slate); text-decoration: none;
}
.logo-icon { width: 44px; height: auto; display: block; align-self: center; }
.logo-dot { color: var(--brand); margin-left: 0.02em; }
.logo-inc { font-size: 0.72em; font-weight: 700; margin-left: 0.1em; }
.footer-brand .logo-dot { color: #7cc4ee; }
.site-nav ul {
  display: flex; gap: 1.3rem; flex-wrap: wrap;
  list-style: none; margin: 0; padding: 0;
}
.site-nav a {
  color: var(--ink); text-decoration: none; font-weight: 600; font-size: 0.98rem;
  padding: 0.3rem 0.1rem; border-radius: 6px;
}
.site-nav a:hover { color: var(--brand-dark); text-decoration: underline; text-underline-offset: 4px; }

/* Sections */
.section { padding: 4rem 0; scroll-margin-top: 4.5rem; }
.section-alt { background: var(--bg-alt); }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  padding: 4.5rem 0 5rem;
  background: linear-gradient(165deg, #E9F5FC 0%, #F6FBFE 52%, var(--bg) 100%);
  border-bottom-left-radius: 50% 2.75rem;
  border-bottom-right-radius: 50% 2.75rem;
  scroll-margin-top: 4.5rem;
}
.hero::before {  /* oversized brand mark, very low opacity, decorative */
  content: ""; position: absolute; right: -110px; top: -30px;
  width: 480px; height: 480px;
  background: url("assets/logo-icon.svg") no-repeat center / contain;
  opacity: 0.07; pointer-events: none;
}
.hero .wrap { position: relative; }
.hero-logo {
  width: clamp(104px, 15vw, 150px); height: auto; display: block;
  margin-bottom: 1.4rem;
  filter: drop-shadow(0 10px 20px rgba(30, 136, 199, 0.22));
}
.subhead { font-size: 1.22rem; color: var(--muted); max-width: 46rem; }
.microcopy { color: var(--muted); font-size: 0.95rem; }
.cta-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1.6rem 0 0.75rem; }

/* Pill buttons */
.btn {
  display: inline-block; padding: 0.8rem 1.6rem; border-radius: 999px;
  font-weight: 700; text-decoration: none;
  border: 2px solid var(--brand-dark);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
  border-color: var(--brand-dark); color: #fff;
  box-shadow: 0 8px 20px rgba(30, 136, 199, 0.30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(30, 136, 199, 0.35); }
.btn-secondary { background: #fff; color: var(--brand-dark); box-shadow: var(--shadow-soft); }
.btn-secondary:hover { background: var(--brand-pale); transform: translateY(-2px); }

/* Check lists with soft round badges */
.check-list { list-style: none; margin: 0 0 1.25rem; padding: 0; max-width: 52rem; }
.check-list li { position: relative; padding-left: 2.3rem; margin-bottom: 0.7rem; }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0.08rem;
  width: 1.5rem; height: 1.5rem; border-radius: 50%;
  background: var(--brand-pale); color: var(--brand-dark);
  font-size: 0.9rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}

/* Offer cards */
.cards {
  display: grid; gap: 1.4rem;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  align-items: start;
}
.card {
  position: relative;
  background: #fff; border: 1px solid var(--border); border-radius: 22px;
  padding: 1.7rem 1.6rem 1.5rem;
  box-shadow: var(--shadow-soft);
}
.card::before {  /* soft top accent bar */
  content: ""; position: absolute; top: 0; left: 1.6rem; right: 1.6rem; height: 4px;
  border-radius: 0 0 4px 4px;
  background: linear-gradient(90deg, var(--brand-pale), var(--border));
}
.card-featured {
  border: 1px solid #BCD9EC;
  background: linear-gradient(180deg, #F2F9FD 0%, #FFFFFF 45%);
  box-shadow: 0 16px 36px rgba(30, 136, 199, 0.16);
}
.card-featured::before { background: linear-gradient(90deg, var(--brand-light), var(--brand)); }
.card .price {
  display: inline-block; white-space: nowrap;
  background: var(--brand-pale); color: var(--brand-dark);
  font-size: 0.92em; font-weight: 800;
  padding: 0.12rem 0.65rem; border-radius: 999px; margin-left: 0.3rem;
}
.card-featured .price { background: var(--brand); color: #fff; }
.card-tagline { color: var(--muted); }
.card ul { margin: 0 0 1rem; padding-left: 1.2rem; }
.card li { margin-bottom: 0.5rem; }

/* Process: numbered circles + dashed connector on soft panels */
.steps { list-style: none; margin: 0; padding: 0; max-width: 52rem; counter-reset: step; }
.steps li {
  position: relative;
  background: #F3F9FC; border: 1px solid var(--border); border-radius: 20px;
  padding: 1.3rem 1.4rem 1.3rem 5.1rem;
  margin-bottom: 1.1rem;
}
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 1.3rem; top: 1.25rem;
  width: 2.6rem; height: 2.6rem; border-radius: 50%;
  background: linear-gradient(145deg, var(--brand-light), var(--brand));
  color: #fff; font-weight: 800; font-size: 1.15rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 14px rgba(30, 136, 199, 0.30);
  z-index: 1;
}
.steps li::after {  /* dashed connector between the circles */
  content: ""; position: absolute; left: 2.58rem; top: 4.3rem; bottom: -1.15rem;
  border-left: 2px dashed #A9CFE9;
}
.steps li:last-child::after { display: none; }
.steps p { margin-bottom: 0; }

/* FAQ */
.faq-list { max-width: 52rem; }
.faq-item {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 0.8rem; overflow: hidden; box-shadow: var(--shadow-soft);
}
.faq-item h3 { margin: 0; }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  font: inherit; font-weight: 700; color: var(--slate);
  padding: 1.05rem 2.6rem 1.05rem 1.3rem; position: relative;
}
.faq-q::after {
  content: "+"; position: absolute; right: 1.15rem; top: 50%;
  transform: translateY(-50%); font-size: 1.45rem; color: var(--brand);
}
.faq-q[aria-expanded="true"]::after { content: "–"; }
.faq-a { padding: 0 1.3rem 1.05rem; }
.faq-a p { margin: 0; color: var(--muted); }

/* Contact */
.contact { background: linear-gradient(160deg, #E9F5FC 0%, var(--bg) 70%); }
.contact-note { color: var(--muted); margin-bottom: 0.4rem; }

/* Footer: dark slate with white logo */
.site-footer {
  background: linear-gradient(180deg, #2B3942 0%, var(--slate-dark) 100%);
  padding: 2.4rem 0 2.2rem; color: #C9D6DE; font-size: 0.95rem;
}
.site-footer p { margin-bottom: 0.35rem; }
.site-footer strong { color: #fff; }
.footer-brand {
  display: flex; align-items: center; gap: 0.7rem;
  font-size: 1.15rem; margin-bottom: 0.6rem;
}
.footer-icon { width: 46px; height: auto; display: block; }

@media (max-width: 40rem) {
  .section { padding: 2.75rem 0; }
  .hero { padding: 3.2rem 0 3.6rem; }
  .hero::before { width: 300px; height: 300px; right: -90px; }
  .site-nav ul { gap: 0.9rem; }
  .card .price { white-space: normal; }
  .steps li { padding-left: 4.6rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .btn:hover { transform: none; }
}