:root {
  --ink: #1f2933;
  --inka: #3b4754;
  --accent: #2f6f6b;       /* muted teal — "inlet" water */
  --accent-dark: #214f4c;
  --paper: rgba(255, 255, 255, 0.92);
  --radius: 18px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --fade: 2.2s;            /* crossfade duration */
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  overflow: hidden;
}

/* ---- Background slideshow ---- */
.bg-slideshow {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: #20303a;
}
.bg-slideshow .slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity var(--fade) ease-in-out, transform 9s ease-out;
  transform: scale(1.06);
}
.bg-slideshow .slide.active {
  opacity: 1;
  transform: scale(1.0);           /* slow Ken-Burns zoom-out while visible */
}
.bg-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 50% 30%, rgba(0,0,0,0.10), rgba(0,0,0,0.45)),
    linear-gradient(180deg, rgba(20,40,45,0.20), rgba(20,40,45,0.55));
}

/* ---- Card ---- */
.card {
  width: min(560px, 100%);
  background: var(--paper);
  backdrop-filter: blur(6px);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px 40px 28px;
  animation: rise 0.7s ease-out both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.brand-mark {
  width: 56px; height: 56px;
  flex: 0 0 auto;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700; font-size: 22px; letter-spacing: 1px;
  box-shadow: 0 6px 16px rgba(47,111,107,0.4);
}
.brand-text h1 { margin: 0; font-size: 28px; letter-spacing: 0.3px; }
.tagline { margin: 2px 0 0; color: var(--inka); font-size: 14px; letter-spacing: 2px; text-transform: uppercase; }

.intro { color: var(--inka); line-height: 1.55; font-size: 16px; margin: 6px 0 26px; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  flex: 1 1 160px;
  text-align: center;
  text-decoration: none;
  padding: 14px 18px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 16px;
  transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 20px rgba(47,111,107,0.35); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--accent-dark); border: 1.5px solid rgba(47,111,107,0.45); }
.btn-ghost:hover { background: rgba(47,111,107,0.08); transform: translateY(-2px); }

.features {
  list-style: none;
  padding: 0;
  margin: 26px 0 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 18px;
  color: var(--inka);
  font-size: 14.5px;
}
.features li { display: flex; align-items: center; gap: 10px; }
.ico { font-size: 18px; }

.foot {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(0,0,0,0.08);
  font-size: 13px;
  color: #6b7682;
}
.foot a { color: var(--accent-dark); }

@media (max-width: 480px) {
  .card { padding: 28px 22px 22px; }
  .features { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .bg-slideshow .slide { transition: opacity 0.4s linear; transform: none; }
  .bg-slideshow .slide.active { transform: none; }
}