:root {
  --oa-navy: #123e66;
  --oa-navy-deep: #0b2f4e;
  --oa-blue: #1b6ca8;
  --oa-orange: #f57c00;
  --oa-orange-dark: #d96500;
  --oa-green: #2e9b57;
  --oa-text: #17222d;
  --oa-muted: #627181;
  --oa-bg: #f5f8fb;
  --oa-border: #dce4eb;
  --oa-white: #fff;
  --oa-radius: 18px;
  --oa-shadow: 0 18px 45px rgba(11, 47, 78, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.oa-landing {
  margin: 0;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--oa-text);
  background: var(--oa-bg);
  line-height: 1.6;
}
a { color: inherit; }
.oa-container { width: min(1180px, calc(100% - 36px)); margin: 0 auto; }
.oa-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid rgba(220,228,235,.85);
  backdrop-filter: blur(10px);
}
.oa-nav { min-height: 78px; display: flex; align-items: center; gap: 28px; }
.oa-brand { flex: 0 0 auto; display: inline-flex; align-items: center; text-decoration: none; }
.oa-brand img { width: 280px; max-width: 43vw; height: auto; display: block; }
.oa-links { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.oa-links a { text-decoration: none; color: var(--oa-navy); font-weight: 650; font-size: 14px; }
.oa-links a:hover { color: var(--oa-orange); }
.oa-login { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px; border-radius: 10px; background: var(--oa-navy); color: #fff !important; box-shadow: 0 8px 18px rgba(18,62,102,.18); }
.oa-login:hover { background: var(--oa-navy-deep); }
.oa-menu-toggle { display: none; margin-left: auto; border: 1px solid var(--oa-border); background: #fff; color: var(--oa-navy); border-radius: 10px; width: 44px; height: 44px; font-size: 21px; cursor: pointer; }

.oa-hero { overflow: hidden; background: linear-gradient(135deg, #eef5fa 0%, #fff 48%, #edf4f8 100%); border-bottom: 1px solid var(--oa-border); }
.oa-hero-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 38px; align-items: center; padding: 72px 0 54px; }
.oa-eyebrow { margin: 0 0 12px; color: var(--oa-blue); letter-spacing: .16em; text-transform: uppercase; font-weight: 800; font-size: 13px; }
.oa-hero h1 { margin: 0; color: var(--oa-navy-deep); line-height: 1.04; font-size: clamp(42px, 6vw, 72px); letter-spacing: -.035em; max-width: 760px; }
.oa-hero-copy { max-width: 660px; margin: 24px 0 0; font-size: 20px; color: var(--oa-muted); }
.oa-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.oa-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 24px; border-radius: 12px; font-weight: 800; text-decoration: none; border: 1px solid transparent; }
.oa-btn-primary { background: var(--oa-orange); color: #fff; box-shadow: 0 12px 28px rgba(245,124,0,.22); }
.oa-btn-primary:hover { background: var(--oa-orange-dark); }
.oa-btn-secondary { background: #fff; color: var(--oa-navy); border-color: var(--oa-border); }
.oa-btn-secondary:hover { border-color: var(--oa-blue); }
.oa-hero-visual { position: relative; }
.oa-hero-visual::before { content: ""; position: absolute; inset: 10% 0 0 14%; border-radius: 50%; background: radial-gradient(circle, rgba(27,108,168,.18), rgba(27,108,168,0) 70%); filter: blur(15px); }
.oa-hero-visual img { position: relative; width: 100%; display: block; border-radius: 20px; box-shadow: var(--oa-shadow); object-fit: cover; }

.oa-benefit-strip { background: #fff; border-bottom: 1px solid var(--oa-border); }
.oa-benefit-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; padding: 20px 0; }
.oa-benefit { display: flex; align-items: center; gap: 10px; color: var(--oa-navy); font-weight: 750; font-size: 13px; }
.oa-benefit span:first-child { width: 32px; height: 32px; border-radius: 50%; display: inline-grid; place-items: center; background: #edf5fb; color: var(--oa-blue); flex: 0 0 auto; }

.oa-section { padding: 76px 0; }
.oa-section-white { background: #fff; }
.oa-section-head { max-width: 760px; margin-bottom: 34px; }
.oa-section-head h2 { margin: 0; color: var(--oa-navy-deep); font-size: clamp(30px, 4vw, 44px); line-height: 1.12; letter-spacing: -.025em; }
.oa-section-head p { margin: 14px 0 0; color: var(--oa-muted); font-size: 18px; }
.oa-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.oa-card { background: #fff; border: 1px solid var(--oa-border); border-radius: var(--oa-radius); padding: 26px; box-shadow: 0 12px 30px rgba(11,47,78,.06); }
.oa-card-icon { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: #edf5fb; color: var(--oa-blue); font-size: 24px; font-weight: 900; margin-bottom: 18px; }
.oa-card:nth-child(2) .oa-card-icon { background: #fff1e4; color: var(--oa-orange); }
.oa-card:nth-child(3) .oa-card-icon { background: #edf8f1; color: var(--oa-green); }
.oa-card:nth-child(4) .oa-card-icon { background: #f0effd; color: #655fc7; }
.oa-card h3 { margin: 0 0 10px; color: var(--oa-navy-deep); font-size: 21px; }
.oa-card p { margin: 0; color: var(--oa-muted); }

.oa-explainer { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.oa-flow { display: grid; gap: 14px; }
.oa-flow-step { background: #fff; border: 1px solid var(--oa-border); border-radius: 14px; padding: 18px; display: grid; grid-template-columns: 44px 1fr; gap: 15px; align-items: start; }
.oa-step-no { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--oa-navy); color: #fff; font-weight: 900; }
.oa-flow-step h3 { margin: 0 0 4px; color: var(--oa-navy); font-size: 17px; }
.oa-flow-step p { margin: 0; color: var(--oa-muted); }
.oa-about-panel { background: linear-gradient(145deg, var(--oa-navy-deep), var(--oa-navy)); color: #fff; border-radius: 24px; padding: 36px; box-shadow: var(--oa-shadow); }
.oa-about-panel h2 { margin: 0 0 16px; font-size: 34px; line-height: 1.12; }
.oa-about-panel p { color: rgba(255,255,255,.82); }
.oa-checklist { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.oa-checklist li { display: flex; gap: 10px; align-items: flex-start; }
.oa-checklist li::before { content: "✓"; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: var(--oa-orange); color: #fff; font-weight: 900; flex: 0 0 auto; }

.oa-targets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.oa-target { border-radius: var(--oa-radius); border: 1px solid var(--oa-border); padding: 26px; background: #fff; }
.oa-target h3 { margin: 0 0 8px; color: var(--oa-navy); }
.oa-target p { margin: 0; color: var(--oa-muted); }

.oa-faq { display: grid; gap: 12px; max-width: 900px; }
.oa-faq details { background: #fff; border: 1px solid var(--oa-border); border-radius: 14px; padding: 0 20px; }
.oa-faq summary { cursor: pointer; list-style: none; font-weight: 800; color: var(--oa-navy); padding: 18px 28px 18px 0; position: relative; }
.oa-faq summary::-webkit-details-marker { display: none; }
.oa-faq summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 24px; color: var(--oa-orange); }
.oa-faq details[open] summary::after { content: "−"; }
.oa-faq p { margin: 0 0 18px; color: var(--oa-muted); }

.oa-cta { padding: 0 0 76px; }
.oa-cta-box { background: linear-gradient(135deg, var(--oa-navy-deep), var(--oa-blue)); border-radius: 24px; padding: 42px; color: #fff; display: flex; gap: 28px; align-items: center; justify-content: space-between; }
.oa-cta-box h2 { margin: 0 0 8px; font-size: 32px; }
.oa-cta-box p { margin: 0; color: rgba(255,255,255,.82); }
.oa-cta-box .oa-btn { flex: 0 0 auto; background: var(--oa-orange); color: #fff; }

.oa-footer { background: #0b2f4e; color: rgba(255,255,255,.8); padding: 30px 0; }
.oa-footer-row { display: flex; gap: 20px; justify-content: space-between; align-items: center; }
.oa-footer a { color: #fff; }

@media (max-width: 980px) {
  .oa-links { display: none; position: absolute; top: 78px; left: 0; right: 0; padding: 18px; background: #fff; border-bottom: 1px solid var(--oa-border); flex-direction: column; align-items: stretch; gap: 8px; }
  .oa-links.is-open { display: flex; }
  .oa-links a { padding: 10px 12px; }
  .oa-menu-toggle { display: inline-grid; place-items: center; }
  .oa-hero-grid, .oa-explainer { grid-template-columns: 1fr; }
  .oa-hero-grid { padding-top: 48px; }
  .oa-hero-visual { order: 2; }
  .oa-benefit-row { grid-template-columns: repeat(2, 1fr); }
  .oa-cards { grid-template-columns: repeat(2, 1fr); }
  .oa-targets { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .oa-container { width: min(100% - 24px, 1180px); }
  .oa-brand img { width: 220px; max-width: 70vw; }
  .oa-hero-grid { padding: 38px 0 36px; gap: 28px; }
  .oa-hero-copy { font-size: 17px; }
  .oa-actions { display: grid; }
  .oa-btn { width: 100%; }
  .oa-benefit-row, .oa-cards { grid-template-columns: 1fr; }
  .oa-section { padding: 56px 0; }
  .oa-card { padding: 22px; }
  .oa-about-panel { padding: 26px; }
  .oa-cta-box { padding: 28px; flex-direction: column; align-items: stretch; }
  .oa-footer-row { flex-direction: column; align-items: flex-start; }
}
/* v10 offline uitleg */
.oa-offline-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:28px}.oa-offline-card{background:#fff;border:1px solid #e1e8ef;border-radius:18px;padding:22px}.oa-offline-card h3{margin:14px 0 8px;color:#123e66}.oa-offline-card p{margin:8px 0;color:#516170;line-height:1.55}.oa-offline-note{margin-top:22px;background:#eef5fb;border-left:4px solid #f57c00;padding:16px 18px;border-radius:10px;color:#27445d}@media(max-width:900px){.oa-offline-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.oa-offline-grid{grid-template-columns:1fr}}