:root {
  color-scheme: light;
  --page-bg: #eef2f7;
  --slide-bg: #ffffff;
  --ink: #0e2841;
  --muted: #156082;
  --soft: #4f6676;
  --blue: #156082;
  --cyan: #0f9ed5;
  --orange: #e97132;
  --green: #196b24;
  --purple: #a02b93;
  --gold: #ceb888;
  --line: #dfe5ef;
  --panel: #f5f8fc;
  --panel-2: #eef4f8;
  --shadow-sm: 0 2px 6px rgba(14, 40, 65, 0.05);
  --shadow-md: 0 12px 34px rgba(14, 40, 65, 0.08);
  --shadow-lg: 0 26px 70px rgba(14, 40, 65, 0.12);
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --sidebar-w: 250px;
  --navbar-h: 60px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --page-bg: #020713;
  --slide-bg: #041e42;
  --ink: #f8fafc;
  --muted: #9fb8c7;
  --soft: #c8c9c7;
  --blue: #0f9ed5;
  --cyan: #43c7ef;
  --orange: #e97132;
  --green: #4ea72e;
  --purple: #d946ef;
  --gold: #ceb888;
  --line: rgba(200, 201, 199, 0.16);
  --panel: rgba(14, 40, 65, 0.5);
  --panel-2: rgba(14, 40, 65, 0.72);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 34px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 26px 70px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--font);
}

button, input { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

/* Top nav */
.deck-nav {
  height: var(--navbar-h);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--slide-bg);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  z-index: 30;
}
.deck-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.deck-brand .mark {
  width: 36px; height: 36px; display: block; object-fit: contain;
}
.deck-brand small { display: block; color: var(--soft); font-size: 11px; font-weight: 600; }
.deck-controls { display: flex; align-items: center; gap: 6px; }
.ctrl {
  min-height: 34px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 999px;
  background: transparent; color: var(--soft); font-weight: 800; cursor: pointer;
  transition: 0.2s ease;
}
.ctrl.icon {
  width: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.home-icon {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ctrl.active { background: var(--blue); border-color: var(--blue); color: #fff; }
.ctrl:hover { border-color: var(--blue); }

/* Workspace */
.deck-workspace { flex: 1; display: flex; overflow: hidden; }

.deck-sidebar {
  width: var(--sidebar-w);
  border-right: 1px solid var(--line);
  background: var(--slide-bg);
  display: flex; flex-direction: column; overflow: hidden;
  transition: width 0.22s ease, border-color 0.22s ease;
}
.deck-workspace.sidebar-collapsed .deck-sidebar {
  width: 0;
  border-right-color: transparent;
}
.sidebar-head {
  padding: 14px 18px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; font-weight: 800; letter-spacing: 0.05em; text-transform: uppercase; color: var(--soft);
}
.slide-count { padding: 2px 8px; border-radius: 6px; background: var(--panel-2); font-size: 11px; }
.thumb-list { flex: 1; overflow-y: auto; padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.thumb-list::-webkit-scrollbar { width: 5px; }
.thumb-list::-webkit-scrollbar-thumb { background: var(--line); border-radius: 6px; }
.thumb {
  display: grid; grid-template-columns: 22px 1fr; align-items: center; gap: 10px;
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--panel); cursor: pointer; text-align: left; transition: 0.18s ease;
}
.thumb:hover { border-color: var(--blue); }
.thumb.active { background: color-mix(in srgb, var(--blue) 12%, var(--slide-bg)); border-color: var(--blue); }
.thumb-num { font-size: 12px; font-weight: 900; color: var(--soft); }
.thumb.active .thumb-num { color: var(--blue); }
.thumb-title { font-size: 12px; font-weight: 700; line-height: 1.3; }

/* Stage */
.deck-stage { flex: 1; display: flex; flex-direction: column; padding: 20px; overflow: hidden; }
.slide-frame {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--slide-bg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}

.ppt-scroll {
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    radial-gradient(circle at 20% 0%, color-mix(in srgb, var(--cyan) 10%, transparent), transparent 34%),
    color-mix(in srgb, var(--page-bg) 82%, var(--slide-bg));
}

.ppt-scale {
  --ppt-scale: 1;
  position: relative;
  width: calc(1280px * var(--ppt-scale));
  height: calc(720px * var(--ppt-scale));
  flex: 0 0 auto;
}

.ppt-canvas {
  position: absolute;
  inset: 0 auto auto 0;
  width: 1280px;
  height: 720px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  font-family: Aptos, Calibri, "Segoe UI", Arial, sans-serif;
  color: #0e2841;
  transform: scale(var(--ppt-scale));
  transform-origin: top left;
}

.ppt-object {
  position: absolute;
  border: 0 solid transparent;
  transform-origin: center;
  transform: rotate(var(--ppt-rotate, 0deg));
  transition: transform 0.18s ease, filter 0.18s ease, box-shadow 0.18s ease;
  overflow: hidden;
}

.ppt-shape:not(.no-fill),
.ppt-image,
.ppt-arrow {
  cursor: pointer;
}

.ppt-shape.no-fill {
  pointer-events: none;
}

.ppt-shape:not(.no-fill):hover,
.ppt-image:hover,
.ppt-arrow:hover {
  z-index: 40;
  transform: translateY(-8px) scale(1.025) rotate(var(--ppt-rotate, 0deg));
  filter: drop-shadow(0 18px 18px rgba(14, 40, 65, 0.18));
}

.ppt-shape {
  display: flex;
  align-items: center;
  justify-content: center;
  border-width: 1px;
  padding: 4px;
  line-height: 1.12;
  color: #0e2841;
}

.ppt-shape.rounded { border-radius: 10px; }
.ppt-shape.no-fill { background: transparent; border-color: transparent; }

.ppt-arrow {
  display: block;
  padding: 0;
}

.ppt-arrow svg {
  width: 100%;
  height: 100%;
  display: block;
}

.ppt-text {
  width: 100%;
  max-height: 100%;
  white-space: pre-wrap;
  overflow: hidden;
}

.ppt-text.vertical {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  letter-spacing: 0.04em;
}

.ppt-image {
  object-fit: contain;
  user-select: none;
}

.ppt-graphic {
  border: 1px dashed rgba(14, 40, 65, 0.18);
  background: rgba(14, 40, 65, 0.03);
}

.ppt-canvas.cover {
  color: #fff;
  background:
    radial-gradient(circle at 72% 22%, rgba(206, 184, 136, 0.22), transparent 34%),
    linear-gradient(135deg, #041e42 0%, #0b2f52 58%, #14507d 100%) !important;
}

.ppt-canvas.cover .ppt-shape.no-fill {
  color: #fff;
  justify-content: flex-start;
  align-items: center;
  text-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

.slide-empty {
  height: 100%;
  display: grid;
  place-items: center;
  color: var(--soft);
  font-weight: 800;
}
.slide-scroll { height: 100%; overflow-y: auto; }
.slide-scroll::-webkit-scrollbar { width: 8px; }
.slide-scroll::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }
.slide {
  min-height: 100%;
  padding: 34px 40px;
  display: flex;
  flex-direction: column;
}

.slide-header { margin-bottom: 20px; }
.slide-header .kicker {
  margin: 0 0 6px; color: var(--orange); font-size: 12px; font-weight: 900;
  letter-spacing: 0.14em; text-transform: uppercase;
}
.slide-header h1 { margin: 0; font-size: clamp(26px, 3.4vw, 40px); letter-spacing: -0.03em; }
.slide-header .sub { margin: 8px 0 0; color: var(--soft); font-size: 15px; line-height: 1.5; }

/* Nav bar under stage */
.stage-nav {
  margin-top: 14px;
  display: flex; align-items: center; justify-content: center; gap: 16px;
}
.nav-btn {
  min-height: 40px; padding: 0 18px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--slide-bg); font-weight: 800; cursor: pointer; transition: 0.18s ease;
}
.nav-btn:hover:not(:disabled) { border-color: var(--blue); color: var(--blue); }
.nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.indicator { font-weight: 800; color: var(--soft); min-width: 64px; text-align: center; }

/* ---------- Cover ---------- */
.slide-cover {
  padding: 0;
  background: linear-gradient(135deg, #041e42 0%, #0b2f52 55%, #14507d 100%);
  color: #fff;
  justify-content: center;
  align-items: flex-start;
  gap: 22px;
  position: relative;
}
.slide-cover::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 82% 20%, rgba(206,184,136,0.28), transparent 45%);
}
.slide-cover .cover-inner { position: relative; z-index: 2; padding: 60px; max-width: 860px; }
.slide-cover .eyebrow { color: var(--gold); letter-spacing: 0.2em; font-weight: 800; font-size: 13px; }
.slide-cover h1 {
  margin: 18px 0; font-size: clamp(40px, 6vw, 74px); line-height: 1.02; letter-spacing: -0.04em;
}
.slide-cover p { color: #c8c9c7; font-size: 18px; line-height: 1.7; max-width: 640px; }
.cover-timeline { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 34px; }
.cover-timeline span {
  padding: 10px 16px; border: 1px solid rgba(206,184,136,0.4); border-radius: 999px;
  color: var(--gold); font-weight: 700; font-size: 13px;
}
.cover-start {
  padding: 14px 28px; border: none; border-radius: 999px;
  background: var(--orange); color: #fff; font-weight: 900; cursor: pointer;
  box-shadow: 0 16px 40px rgba(233,113,50,0.4);
}

/* ---------- Portfolio matrix (Slide 2) ---------- */
.portfolio {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
}
.axis {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  border-radius: 14px;
  background: linear-gradient(180deg, var(--blue), var(--green));
  color: #fff; font-weight: 900; letter-spacing: 0.2em; padding: 12px 0;
}
.axis .a-office, .axis .a-factory { writing-mode: vertical-rl; text-orientation: upright; font-size: 12px; }
.matrix { display: flex; flex-direction: column; gap: 14px; }
.year-band {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  align-items: center; margin-bottom: 2px;
}
.year-tag {
  display: flex; align-items: center; gap: 10px; color: var(--blue); font-weight: 900;
}
.year-tag .line { flex: 1; height: 2px; background: var(--line); }
.year-tag.orange { color: var(--orange); }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.p-card {
  padding: 16px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--panel); box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 6px;
}
.p-card h3 { margin: 0; font-size: 15px; color: var(--blue); }
.p-card p { margin: 0; font-size: 12px; line-height: 1.5; color: var(--soft); }
.p-card .chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 8px; }
.p-card .chips span {
  padding: 3px 8px; border-radius: 999px; font-size: 10px; font-weight: 800;
  background: color-mix(in srgb, var(--blue) 12%, transparent); color: var(--blue);
}
.factory-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.f-card {
  padding: 16px; border: 1px solid var(--line); border-radius: 14px;
  background: color-mix(in srgb, var(--green) 6%, var(--panel));
}
.f-card h3 { margin: 0 0 6px; font-size: 15px; color: var(--green); }
.f-card p, .f-card li { font-size: 12px; line-height: 1.5; color: var(--soft); }
.f-card ul { margin: 6px 0 0; padding-left: 16px; }
.data-foot {
  margin-top: 14px; padding: 12px 16px; border-radius: 12px;
  background: color-mix(in srgb, var(--blue) 8%, var(--panel));
  border: 1px dashed var(--blue);
  display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
  font-size: 12px; color: var(--soft);
}
.data-foot strong { color: var(--blue); }

/* ---------- Generic content grids ---------- */
.col-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.col-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.panel {
  padding: 18px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--panel); box-shadow: var(--shadow-sm);
}
.panel h3 { margin: 0 0 8px; font-size: 16px; }
.panel p, .panel li { font-size: 13px; line-height: 1.55; color: var(--soft); }
.panel ul { margin: 8px 0 0; padding-left: 18px; }
.panel .tag {
  display: inline-block; margin-bottom: 8px; padding: 4px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 800;
}
.tag.office { background: color-mix(in srgb, var(--orange) 15%, transparent); color: var(--orange); }
.tag.factory { background: color-mix(in srgb, var(--green) 15%, transparent); color: var(--green); }
.tag.dev { background: color-mix(in srgb, var(--purple) 15%, transparent); color: var(--purple); }
.tag.core { background: color-mix(in srgb, var(--blue) 15%, transparent); color: var(--blue); }

/* Roadmap timeline */
.track { display: flex; flex-direction: column; gap: 14px; }
.track-row {
  display: grid; grid-template-columns: 120px 1fr; gap: 14px; align-items: stretch;
}
.track-label {
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px; font-weight: 900; letter-spacing: 0.15em; writing-mode: horizontal-tb;
  color: #fff; text-align: center; padding: 10px;
}
.track-label.office { background: var(--orange); }
.track-label.factory { background: var(--green); }
.track-label.dev { background: var(--purple); }
.track-label.core { background: var(--blue); }
.track-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.step {
  padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--panel); position: relative;
}
.step .when { font-size: 11px; font-weight: 900; color: var(--blue); }
.step strong { display: block; margin: 4px 0; font-size: 13px; }
.step p { margin: 0; font-size: 12px; line-height: 1.45; color: var(--soft); }

.metric-strip { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px; }
.metric {
  flex: 1; min-width: 150px; padding: 16px; border-radius: 14px;
  background: color-mix(in srgb, var(--blue) 8%, var(--panel)); border: 1px solid var(--line);
}
.metric b { display: block; font-size: 30px; color: var(--gold); letter-spacing: -0.03em; }
.metric span { font-size: 12px; color: var(--soft); font-weight: 700; }

.big-note {
  margin-top: auto; padding: 16px 18px; border-radius: 14px;
  background: color-mix(in srgb, var(--orange) 10%, var(--panel));
  border-left: 5px solid var(--orange); font-size: 14px; line-height: 1.6;
}

.callout {
  padding: 18px; border-radius: 16px; border: 1px solid var(--line);
  background: linear-gradient(145deg, color-mix(in srgb, var(--blue) 10%, var(--panel)), var(--panel-2));
}
.callout h3 { margin: 0 0 10px; color: var(--blue); }
.callout p { margin: 0 0 8px; font-size: 13px; line-height: 1.55; color: var(--soft); }

.pipeline { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.pipeline span {
  padding: 6px 12px; border-radius: 999px; font-size: 12px; font-weight: 800;
  background: color-mix(in srgb, var(--purple) 12%, transparent); color: var(--purple);
}

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.feature {
  padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel);
}
.feature h4 { margin: 0 0 6px; font-size: 14px; color: var(--blue); }
.feature p { margin: 0; font-size: 12px; color: var(--soft); line-height: 1.5; }
.feature .status {
  display: inline-block; margin-top: 10px; padding: 3px 10px; border-radius: 999px;
  font-size: 10px; font-weight: 800;
  background: color-mix(in srgb, var(--green) 14%, transparent); color: var(--green);
}

/* ---------- Verbatim slide layout ---------- */
.slide-verbatim .v-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 12px;
  align-content: start;
}
.v-card {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}
.v-card h3 {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--blue);
  letter-spacing: -0.01em;
}
.v-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink);
}
.v-card ul {
  margin: 0;
  padding-left: 18px;
}
.v-card li {
  margin: 5px 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--soft);
}
.v-card.v-chip {
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--blue) 10%, var(--panel));
  border-color: color-mix(in srgb, var(--blue) 30%, var(--line));
}
.v-card.v-chip p {
  font-weight: 800;
  color: var(--blue);
  font-size: 13px;
}

@media (max-width: 1100px) {
  .deck-sidebar { display: none; }
  .card-grid, .col-3, .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .card-grid, .col-2, .col-3, .factory-row, .feature-grid, .year-band { grid-template-columns: 1fr; }
  .portfolio { grid-template-columns: 1fr; }
  .axis { flex-direction: row; }
  .axis .a-office, .axis .a-factory { writing-mode: horizontal-tb; }
  .track-row { grid-template-columns: 1fr; }
}