:root {
  --bg: #F8FAFC;
  --primary: #1D4ED8;
  --text: #0F172A;
  --muted: #64748B;
  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --purple: #A855F7;
  --card: #FFFFFF;
  --shadow: 0 8px 30px rgba(0,0,0,0.08);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 18px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 18px 24px 0;
}
.navbar {
  max-width: 1180px;
  margin: 0 auto;
  min-height: 76px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(16px);
  border-radius: 999px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(226,232,240,.8);
}
.brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 1000; letter-spacing: -.03em; line-height: 1; font-size: 1.15rem;}
.brand-logo { width: 52px; height: 52px; flex-shrink: 0; object-fit: contain; border-radius: 12px; }
.brand-text {white-space: nowrap;}
.brand-dvl {color: #0F172A;}
.brand-theory {color: #EF4444;}
.nav-menu { display: flex; align-items: center; gap: 28px; color: var(--muted); font-weight: 700; font-size: 15px; }
.nav-menu a:hover { color: var(--primary); }
.nav-download { color: #fff !important; background: var(--primary); padding: 13px 20px; border-radius: 999px; box-shadow: 0 12px 24px rgba(29,78,216,.22); }
.nav-toggle { display: none; background: transparent; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; }

.hero { position: relative; min-height: 900px; padding: 90px 24px 80px; overflow: hidden; }
.hero-bg, .cta-bg {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(248,250,252,.98) 0%, rgba(248,250,252,.86) 45%, rgba(248,250,252,.62) 100%), url('../images/hero/roadway-landscape.png') center/cover no-repeat;
  z-index: -2;
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 260px;
  background: linear-gradient(0deg, var(--bg) 18%, rgba(248,250,252,.92) 55%, rgba(248,250,252,0));
  z-index: -1;
}
.hero-inner { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 40px; }
.eyebrow { color: var(--primary); font-weight: 900; text-transform: uppercase; letter-spacing: .16em; font-size: 13px; margin: 0 0 18px; }
.tagline-blue {color: var(--primary);}
.tagline-black {color: var(--text);}
h1 { font-size: 72px; line-height: .98; letter-spacing: -.075em; margin: 0; max-width: 700px; }
h1 span { color: var(--primary); display: block; }
.hero-text { color: var(--muted); max-width: 560px; font-size: 21px; margin: 28px 0 34px; }
.hero-actions, .store-buttons { display: flex; flex-wrap: wrap; gap: 16px; }
.btn, .store-btn { min-height: 58px; display: inline-flex; align-items: center; justify-content: center; padding: 0 24px; border-radius: 999px; font-weight: 900; border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 16px 30px rgba(29,78,216,.24); }
.btn-secondary { background: #fff; color: var(--text); border-color: #E2E8F0; }
.chips { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.chips span { background: rgba(255,255,255,.88); color: var(--text); border: 1px solid #E2E8F0; padding: 10px 14px; border-radius: 999px; font-size: 14px; font-weight: 800; }
.hero-visual { position: relative; min-height: 670px; display: grid; place-items: center; }
.phone { width: min(402px, 100%); border-radius: 44px; filter: drop-shadow(0 34px 55px rgba(15,23,42,.20)); }
.phone-hero { width: min(430px, 84vw); }
.float-card { position: absolute; background: rgba(255,255,255,.94); border: 1px solid #E2E8F0; border-radius: 22px; padding: 16px 18px; box-shadow: var(--shadow); font-size: 28px; font-weight: 900; letter-spacing: -.04em; }
.float-card span { display: block; color: var(--muted); font-size: 13px; font-weight: 800; letter-spacing: 0; }
.float-one { top: 88px; left: 8px; color: var(--primary); }
.float-two { right: 2px; top: 330px; color: var(--success); }
.float-three { left: 12px; bottom: 126px; color: var(--warning); }

.stats-strip { max-width: 1180px; margin: -50px auto 120px; padding: 0 24px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; z-index: 2; }
.stat-card { background: #fff; padding: 28px 18px; border-radius: 24px; box-shadow: var(--shadow); text-align: center; border: 1px solid #E2E8F0; }
.stat-card strong { display: block; font-size: 34px; line-height: 1.1; letter-spacing: -.04em; color: var(--primary); }
.stat-card span { display: block; color: var(--muted); font-weight: 800; margin-top: 8px; }

.feature-section, .review-section { max-width: 1180px; margin: 0 auto 140px; padding: 0 24px; display: grid; grid-template-columns: .92fr 1.08fr; gap: 78px; align-items: center; }
.feature-section.reverse { grid-template-columns: 1.08fr .92fr; }
.feature-section.reverse .section-image { order: 2; }
.section-image { display: grid; place-items: center; }
.section-copy h2, .cards-section h2, .download-cta h2 { margin: 0 0 24px; font-size: 48px; line-height: 1.05; letter-spacing: -.055em; }
.section-copy p { color: var(--muted); }
.check-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.check-list li { position: relative; padding-left: 38px; color: var(--text); font-weight: 800; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: -2px; display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: rgba(29,78,216,.12); color: var(--primary); font-weight: 900; }
.review-section { grid-template-columns: 1fr 1fr; }
.center { text-align: center; }
.mini-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 28px; }
.mini-grid article { background: #fff; border: 1px solid #E2E8F0; border-radius: 18px; padding: 18px; box-shadow: 0 10px 24px rgba(15,23,42,.06); font-weight: 900; color: var(--primary); }
.mini-grid span { color: var(--text); margin-left: 6px; }

.cards-section { max-width: 1180px; margin: 0 auto 120px; padding: 0 24px; }
.center-text { text-align: center; }
.feature-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; }
.feature-card { background: #fff; border: 1px solid #E2E8F0; border-radius: 26px; padding: 28px 22px; box-shadow: 0 16px 34px rgba(15,23,42,.06); }
.feature-card .icon { width: 54px; height: 54px; border-radius: 18px; display: grid; place-items: center; color: #fff; font-size: 27px; font-weight: 900; margin-bottom: 20px; }
.feature-card.green .icon { background: var(--success); }
.feature-card.blue .icon { background: var(--primary); }
.feature-card.purple .icon { background: var(--purple); }
.feature-card.orange .icon { background: var(--warning); }
.feature-card h3 { margin: 0 0 10px; font-size: 22px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 16px; }

.download-cta { position: relative; max-width: 1180px; margin: 0 auto 120px; overflow: hidden; border-radius: 34px; min-height: 420px; display: grid; place-items: center; isolation: isolate; }
.download-cta .cta-bg { background: linear-gradient(135deg, rgba(29,78,216,.96), rgba(29,78,216,.72)), url('../images/hero/roadway-landscape.png') center/cover no-repeat; z-index: -1; }
.cta-content { text-align: center; color: #fff; padding: 60px 24px; }
.cta-content h2 { max-width: 720px; color: #fff; }
.cta-content p { margin: 0 auto 30px; max-width: 620px; color: rgba(255,255,255,.86); font-size: 20px; }
.store-buttons { justify-content: center; }
.store-btn { background: #fff; color: var(--text); }

.footer { background: #0B1F4D; color: #fff; padding: 70px 24px 28px; }
.footer-inner { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1.2fr repeat(4, 1fr); gap: 34px; }
.footer-brand strong { font-size: 26px; }
.footer-brand p, .footer a { color: rgba(255,255,255,.68); }
.footer-col h3 { margin: 0 0 16px; }
.footer-col a { display: block; margin: 9px 0; font-size: 15px; }
.footer-bottom { max-width: 1180px; margin: 50px auto 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.14); display: flex; justify-content: space-between; gap: 16px; color: rgba(255,255,255,.72); font-size: 14px; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

.powered-by {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.powered-by-logo {
  height: 24px;
  width: auto;
  object-fit: contain;
}

@media (max-width: 1100px) {
  h1 { font-size: 54px; }
  .hero { min-height: auto; padding-top: 70px; }
  .hero-inner, .feature-section, .review-section { gap: 44px; }
  .section-copy h2, .cards-section h2, .download-cta h2 { font-size: 36px; }
  .feature-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
  body { font-size: 16px; }
  .site-header { padding: 12px 12px 0; }
  .navbar { border-radius: 24px; min-height: 62px; }
  .nav-toggle { display: block; }
  .nav-menu { position: absolute; left: 12px; right: 12px; top: 86px; padding: 20px; border-radius: 24px; background: #fff; box-shadow: var(--shadow); border: 1px solid #E2E8F0; display: none; flex-direction: column; align-items: stretch; gap: 12px; }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 8px 10px; }
  .nav-download { text-align: center; }
  .hero { padding: 52px 18px 70px; }
  .hero-inner, .feature-section, .review-section, .feature-section.reverse { grid-template-columns: 1fr; gap: 34px; }
  .feature-section.reverse .section-image { order: 0; }
  h1 { font-size: 38px; }
  .hero-text { font-size: 17px; }
  .hero-actions .btn, .store-btn { width: 100%; }
  .hero-visual { min-height: 520px; }
  .phone-hero { width: min(330px, 86vw); }
  .float-card { font-size: 20px; padding: 12px 14px; }
  .float-one { top: 30px; left: 0; }
  .float-two { right: 0; top: 245px; }
  .float-three { left: 0; bottom: 60px; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); margin: -30px auto 80px; gap: 12px; padding: 0 18px; }
  .stat-card { padding: 20px 12px; }
  .stat-card strong { font-size: 26px; }
  .feature-section, .review-section, .cards-section { margin-bottom: 86px; padding: 0 18px; }
  .section-copy h2, .cards-section h2, .download-cta h2 { font-size: 28px; }
  .mini-grid, .feature-cards { grid-template-columns: 1fr; }
  .download-cta { margin: 0 18px 80px; min-height: 360px; border-radius: 24px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}

@media (max-width: 420px) {
  .stats-strip { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}