*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --gold: #F8CE00;
  --green: #A2FFA2;
  --purple: #4E04EB;
  --dark: #1A1A1A;
  --ink: #262626;
  --white: #FFFFFF;
  --paper: #F7F8FB;
  --muted: #6B7280;
  --line: #E5E7EB;

  --slide-w: 960;
  --slide-h: 540;

  --font: 'League Spartan', 'Futura', 'Century Gothic', system-ui, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  --shadow-soft: 0 18px 50px rgba(26, 26, 26, 0.10);
  --shadow-tight: 0 10px 28px rgba(26, 26, 26, 0.12);
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #111;
  font-family: var(--font);
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
}

.deck {
  position: relative;
  flex: none;
  width: calc(var(--slide-w) * 1px);
  height: calc(var(--slide-h) * 1px);
  transform-origin: center center;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.30);
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: calc(var(--slide-w) * 1px);
  height: calc(var(--slide-h) * 1px);
  background: var(--paper);
  color: var(--ink);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.slide.active {
  opacity: 1;
  pointer-events: auto;
}

.slide::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: linear-gradient(
    90deg,
    var(--gold) 0 33.333%,
    var(--green) 33.333% 66.666%,
    var(--purple) 66.666% 100%
  );
  z-index: 5;
}

img:not([src]) {
  visibility: hidden;
}

h1 {
  font-size: 3em;
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

h2 {
  font-size: 1.7em;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

p, li {
  font-size: 0.98em;
  line-height: 1.5;
}

a {
  color: var(--purple);
  text-decoration: none;
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--purple);
  transition: width 0.3s ease;
  z-index: 1000;
}

.site-back {
  position: fixed;
  top: 14px;
  left: 16px;
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 11px;
  color: #fffc;
  border: 1px solid #fff2;
  border-radius: 999px;
  background: #111a;
  backdrop-filter: blur(8px);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.site-back:hover,
.site-back:focus-visible {
  color: #fff;
  background: #111d;
}

.is-embedded .site-back {
  display: none;
}

.nav {
  position: fixed;
  bottom: 12px;
  right: 16px;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: #fff8;
  user-select: none;
}

.nav button {
  background: #fff2;
  border: none;
  color: #fffa;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
}

.nav button:disabled {
  opacity: 0.25;
  cursor: default;
}

.slide[data-layout="section"] {
  justify-content: center;
  align-items: flex-start;
  padding: 0 78px;
  background:
    radial-gradient(circle at 82% 28%, rgba(78, 4, 235, 0.08), transparent 24%),
    radial-gradient(circle at 18% 78%, rgba(248, 206, 0, 0.12), transparent 20%),
    var(--white);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 1em;
  font-weight: 700;
  color: var(--purple);
  letter-spacing: 0.14em;
  margin-bottom: 14px;
}

.section-subtitle {
  max-width: 540px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 1.04em;
}

.section-bar {
  display: flex;
  width: 120px;
  height: 6px;
  margin-top: 22px;
  border-radius: 999px;
  overflow: hidden;
}

.section-bar span {
  flex: 1;
}

.section-bar span:nth-child(1) { background: var(--gold); }
.section-bar span:nth-child(2) { background: var(--green); }
.section-bar span:nth-child(3) { background: var(--purple); }

.slide[data-layout="figure"] {
  padding: 34px 48px 32px;
  background: var(--paper);
}

.slide-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 14px;
}

.slide-header h2 {
  max-width: 730px;
}

.brand-mark {
  width: 108px;
  height: auto;
  object-fit: contain;
  opacity: 0.75;
  flex: 0 0 auto;
}

.fig-container {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid rgba(26, 26, 26, 0.08);
  box-shadow: var(--shadow-soft);
}

.fig-container img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.compact-figure {
  padding: 14px 18px;
}

.fig-link {
  display: inline-flex;
  align-self: center;
  align-items: center;
  justify-content: center;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  color: var(--purple);
  background: rgba(78, 4, 235, 0.06);
  border: 1px solid rgba(78, 4, 235, 0.14);
  border-radius: 999px;
  padding: 10px 14px;
}

.cover-project {
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0;
  background: #FFFFFF;
}

.cover-project::before {
  display: none;
}

.cover-project .cover-content {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cover-project .project-logo {
  width: 620px;
  max-width: 80%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cover-project .project-logo img {
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: contain;
}

.cover-project .powered-by {
  position: absolute;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
}

.cover-project .powered-by img {
  display: block;
  height: 26px;
  width: auto;
}

.closing .fig-container {
  align-items: center;
  justify-content: center;
}

.closing-inner {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.closing-logo {
  width: auto;
  max-width: 54%;
  max-height: 26%;
}