:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f5f7fb;
  --surface-2: var(--surface-soft);
  --border: rgba(15, 23, 42, 0.12);
  --text-1: #111827;
  --text-2: #4b5563;
  --text-3: #8a94a6;
  --accent: #2563eb;
  --accent-2: #14b8a6;
  --bg-accent: transparent;
  --radius: 14px;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.10);
  --grad: linear-gradient(135deg, var(--accent), var(--accent-2));
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text-1); font-family: var(--font-sans); }
.deck { position: relative; width: 100vw; height: 100vh; overflow: hidden; background: var(--bg); }
.slide { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; padding: 72px 96px; opacity: 0; pointer-events: none; transform: translateX(24px); transition: opacity .28s ease, transform .28s ease; }
.slide.is-active { opacity: 1; pointer-events: auto; transform: translateX(0); z-index: 2; }
.slide.is-prev { transform: translateX(-24px); }
.kicker { margin: 0 0 12px; color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.h1 { margin: 0; font-size: 72px; line-height: 1.05; letter-spacing: -0.02em; }
.h2 { margin: 0; font-size: 52px; line-height: 1.12; letter-spacing: -0.01em; }
.lede { max-width: 760px; color: var(--text-2); font-size: 24px; line-height: 1.55; }
.grid { display: grid; gap: 22px; }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 24px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.notes { display: none !important; }
.progress-bar { position: fixed; left: 0; right: 0; bottom: 0; height: 4px; z-index: 20; background: transparent; }
.progress-bar span { display: block; width: 0; height: 100%; background: var(--accent); transition: width .2s ease; }
.notes-overlay { position: fixed; left: 0; right: 0; bottom: 0; max-height: 42vh; transform: translateY(100%); overflow: auto; padding: 20px 32px; z-index: 40; background: rgba(17, 24, 39, .96); color: white; transition: transform .2s ease; }
.notes-overlay.open { transform: translateY(0); }
.overview { position: fixed; inset: 0; z-index: 50; display: none; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 36px; background: rgba(15, 23, 42, .92); overflow: auto; }
.overview.open { display: grid; }
.overview button { height: 120px; border: 1px solid rgba(255,255,255,.18); border-radius: 10px; color: white; background: rgba(255,255,255,.08); cursor: pointer; text-align: left; padding: 14px; }

@media print {
  @page {
    size: 16in 9in;
    margin: 0;
  }

  html,
  body {
    width: 16in;
    height: auto;
    background: var(--bg);
  }

  .deck {
    width: 16in;
    height: auto;
    overflow: visible;
  }

  .slide {
    position: relative;
    inset: auto;
    width: 16in;
    height: 9in;
    min-height: 9in;
    opacity: 1 !important;
    pointer-events: auto;
    transform: none !important;
    page-break-after: always;
    break-after: page;
  }

  .progress-bar,
  .notes-overlay,
  .overview {
    display: none !important;
  }
}