:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --ink: #16202e;
  --ink-soft: #465364;
  --ink-mute: #6d7a8c;
  --navy: #0b1e33;
  --navy-2: #10283f;
  --accent: #0e5a8f;
  --accent-soft: #1a76b5;
  --line: #e2e8f0;
  --line-dark: rgba(255,255,255,0.14);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-soft); }
img { max-width: 100%; height: auto; display: block; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11,30,51,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 16px 0;
}
.nav-inner {
  max-width: 1140px; margin: 0 auto; padding: 0 24px;
  display: flex; justify-content: space-between; align-items: center;
}
.brand { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; color: #fff; }
.brand:hover { color: #fff; }
.brand-sub { font-weight: 400; color: rgba(255,255,255,0.55); margin-left: 6px; }
.nav-links { display: flex; gap: 26px; font-size: 14px; align-items: center; }
.nav-links a { color: rgba(255,255,255,0.78); }
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-cta {
  padding: 8px 18px;
  background: #fff; color: var(--navy) !important;
  border-radius: 8px; font-weight: 600;
}
.nav-cta:hover { background: #e8eef5; }
@media (max-width: 720px) {
  .nav-links { gap: 16px; font-size: 13px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .brand { white-space: nowrap; }
  .brand-sub { display: none; }
}

/* ---------- Hero (photo) ---------- */
.hero {
  position: relative;
  color: #fff;
  background: var(--navy);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0.55;
}
.hero-grad {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(11,30,51,0.55) 0%, rgba(11,30,51,0.75) 70%, var(--navy) 100%);
}
.hero-inner {
  position: relative;
  max-width: 1140px; margin: 0 auto;
  padding: 130px 24px 120px;
}
.hero-eyebrow {
  font-size: 13px; font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: #9fc4e2; margin-bottom: 22px;
}
.hero h1 {
  font-size: 52px; font-weight: 700; letter-spacing: -0.02em;
  line-height: 1.12; max-width: 780px; margin-bottom: 24px;
}
.hero-lead {
  font-size: 19px; color: rgba(255,255,255,0.85);
  max-width: 640px; line-height: 1.65; margin-bottom: 38px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 26px; border-radius: 9px;
  font-size: 15px; font-weight: 600; letter-spacing: -0.005em;
}
.btn-primary { background: #fff; color: var(--navy); }
.btn-primary:hover { background: #e8eef5; color: var(--navy); }
.btn-ghost { border: 1px solid rgba(255,255,255,0.35); color: #fff; }
.btn-ghost:hover { border-color: #fff; color: #fff; }
.btn-solid { background: var(--accent); color: #fff; }
.btn-solid:hover { background: var(--accent-soft); color: #fff; }
@media (max-width: 640px) {
  .hero-inner { padding: 80px 20px 70px; }
  .hero h1 { font-size: 34px; }
  .hero-lead { font-size: 17px; }
}

/* Sub-page hero */
.hero-sub .hero-inner { padding: 90px 24px 80px; }
@media (max-width: 640px) { .hero-sub .hero-inner { padding: 60px 20px 54px; } }

/* Hero stat strip */
.strip {
  position: relative;
  background: var(--navy-2);
  border-top: 1px solid var(--line-dark);
}
.strip-inner {
  max-width: 1140px; margin: 0 auto; padding: 26px 24px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.strip-item { color: rgba(255,255,255,0.85); font-size: 14px; }
.strip-item strong { display: block; color: #fff; font-size: 20px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 2px; }
@media (max-width: 800px) { .strip-inner { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Sections ---------- */
.section { padding: 96px 24px; }
.section-alt { background: var(--bg-alt); }
.section-inner { max-width: 1140px; margin: 0 auto; }
.section-eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.section-title {
  font-size: 36px; font-weight: 700; letter-spacing: -0.015em;
  margin-bottom: 20px; max-width: 720px;
}
.section-lead {
  font-size: 17px; color: var(--ink-soft); max-width: 720px;
  margin-bottom: 54px; line-height: 1.7;
}
@media (max-width: 640px) {
  .section { padding: 62px 20px; }
  .section-title { font-size: 27px; }
  .section-lead { font-size: 16px; margin-bottom: 36px; }
}

/* ---------- Grids & cards ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; gap: 20px; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 30px 28px; transition: border-color .2s, box-shadow .2s;
}
.card:hover { border-color: var(--accent-soft); box-shadow: 0 8px 30px rgba(14,90,143,0.08); }
.card-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: linear-gradient(135deg, #e7f0f9, #d3e4f3);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 20px;
}
.card h3 { font-size: 17px; font-weight: 650; margin-bottom: 9px; letter-spacing: -0.01em; }
.card p { font-size: 14.5px; color: var(--ink-soft); line-height: 1.62; }
.card .card-link { display: inline-block; margin-top: 14px; font-size: 14px; font-weight: 600; }

/* Feature rows with photos */
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.feature-row + .feature-row { margin-top: 90px; }
.feature-row.rev > .feature-media { order: 2; }
@media (max-width: 800px) {
  .feature-row { grid-template-columns: 1fr; gap: 28px; }
  .feature-row.rev > .feature-media { order: 0; }
  .feature-row + .feature-row { margin-top: 56px; }
}
.feature-media img { border-radius: 16px; box-shadow: 0 18px 50px rgba(11,30,51,0.16); }
.feature-body h2 { font-size: 30px; font-weight: 700; letter-spacing: -0.015em; margin-bottom: 16px; }
.feature-body p { font-size: 16px; color: var(--ink-soft); line-height: 1.7; margin-bottom: 14px; }
.check-list { list-style: none; margin-top: 18px; }
.check-list li {
  position: relative; padding-left: 30px; margin-bottom: 12px;
  font-size: 15px; color: var(--ink-soft);
}
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 20px; height: 20px; border-radius: 6px;
  background: #e3f0e9; color: #1b7a4b; font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* Spec table */
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table th, .spec-table td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.spec-table th { font-weight: 650; color: var(--ink); background: var(--bg-alt); font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; }
.spec-table td { color: var(--ink-soft); }
.spec-table td:first-child { color: var(--ink); font-weight: 600; }

/* Process steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 26px 24px;
}
.step-num {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--navy); color: #fff; font-weight: 700; font-size: 15px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.step h3 { font-size: 16px; font-weight: 650; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--ink-soft); line-height: 1.6; }

/* Stats */
.about-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.stat-item { padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 12px; }
.stat-num { font-size: 28px; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; margin-bottom: 4px; }
.stat-label { font-size: 13px; color: var(--ink-mute); letter-spacing: 0.02em; }

/* CTA band */
.cta-band { background: var(--navy); color: #fff; padding: 78px 24px; }
.cta-band-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.cta-band h2 { font-size: 32px; font-weight: 700; letter-spacing: -0.015em; margin-bottom: 16px; }
.cta-band p { font-size: 17px; color: rgba(255,255,255,0.82); margin-bottom: 32px; }
@media (max-width: 640px) { .cta-band h2 { font-size: 25px; } }

/* Contact */
.contact-box {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 42px; max-width: 760px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 34px;
}
@media (max-width: 640px) { .contact-box { grid-template-columns: 1fr; padding: 30px 24px; } }
.contact-label {
  font-size: 12px; font-weight: 700; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--ink-mute); margin-bottom: 10px;
}
.contact-value { font-size: 15px; line-height: 1.7; }
.contact-value a { color: var(--ink); border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.contact-value a:hover { color: var(--accent); border-color: var(--accent); }

/* Footer */
.footer { padding: 54px 24px 44px; background: var(--navy); color: rgba(255,255,255,0.6); }
.footer-inner {
  max-width: 1140px; margin: 0 auto;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start;
  gap: 26px; font-size: 13.5px;
}
.footer-brand { color: #fff; font-weight: 700; font-size: 15px; margin-bottom: 8px; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,0.65); }
.footer-links a:hover { color: #fff; }