@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── Tokens ─────────────────────────────────────────────── */
:root {
  --dark:        #08080C;
  --dark-2:      #0C0E14;
  --light:       #F6F2EA;
  --light-2:     #EDE7D9;
  --dt:          #EEE9E0;          /* dark text */
  --dt-m:        rgba(238,233,224,.46);
  --lt:          #130F0C;          /* light text */
  --lt-m:        rgba(19,15,12,.46);
  --acc:         #DA291C;
  --acc-faint:   rgba(218,41,28,.12);
  --acc-border:  rgba(218,41,28,.45);
  --line-d:      rgba(255,255,255,.09);
  --line-l:      rgba(19,15,12,.1);
  --font:        'Inter', 'PingFang SC', 'Microsoft YaHei UI', sans-serif;
  --rail:        272px;
  --pad:         70px 80px 80px;
}

/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }

body {
  font-family: var(--font);
  background: var(--dark);
  color: var(--dt);
  -webkit-font-smoothing: antialiased;
}

/* Subtle grid texture */
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  z-index: 0;
}

/* ─── Shell ─────────────────────────────────────────────── */
#shell {
  position: relative;
  width: 100vw;
  height: 100vh;
}

/* ─── Sidebar nav ───────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--rail);
  height: 100%;
  z-index: 200;
  background: rgba(8,8,12,.97);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--line-d);
  transform: translateX(-100%);
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  overflow-y: auto;
  padding: 80px 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.nav-open .sidebar { transform: translateX(0); }

.sidebar-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.brand-kicker {
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--dt-m);
}
.brand-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--dt);
}

.sidebar-progress {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.progress-label {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--dt-m);
}
#slideCounter { color: var(--dt); font-weight: 500; }
.progress-track {
  height: 2px;
  background: rgba(255,255,255,.08);
  border-radius: 2px;
  overflow: hidden;
}
#progressBar {
  height: 100%;
  background: var(--acc);
  border-radius: 2px;
  transition: width .3s ease;
}

#navList {
  display: flex;
  flex-direction: column;
  gap: 4px;
  list-style: none;
}
#navList button {
  display: flex;
  align-items: baseline;
  gap: 12px;
  width: 100%;
  padding: 10px 0;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
  border-top: 1px solid transparent;
  transition: all .15s;
}
#navList button:hover { border-top-color: var(--line-d); }
#navList button.is-current .nav-num { color: var(--acc); }
#navList button.is-current .nav-title { color: var(--dt); }
.nav-num {
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(255,255,255,.22);
  font-weight: 500;
  flex-shrink: 0;
}
.nav-title {
  font-size: 13px;
  color: rgba(255,255,255,.42);
  font-weight: 400;
}

/* ─── Menu toggle ───────────────────────────────────────── */
.menu-btn {
  position: fixed;
  top: 20px; left: 20px;
  z-index: 300;
  width: 38px; height: 38px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 8px;
}
.menu-btn span {
  display: block;
  height: 1px;
  background: rgba(255,255,255,.8);
  transition: background .2s;
}
.theme-light-slide .menu-btn span,
[data-theme="light"] .menu-btn span { background: rgba(19,15,12,.7); }

/* ─── Deck & Slides ─────────────────────────────────────── */
.deck {
  position: relative;
  width: 100%;
  height: 100vh;
}

.slide {
  position: absolute;
  inset: 0;
  padding: var(--pad);
  opacity: 0;
  transform: translateX(44px);
  pointer-events: none;
  transition: opacity .35s ease, transform .45s cubic-bezier(.4,0,.2,1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.slide.active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

/* Reveal elements animate in when slide is active */
.slide [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .5s ease, transform .6s cubic-bezier(.4,0,.2,1);
}
.slide.active [data-reveal] {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Themes ─────────────────────────────────────────────── */
.theme-dark {
  background:
    radial-gradient(circle at 75% 15%, rgba(218,41,28,.1) 0%, transparent 22%),
    radial-gradient(circle at 18% 80%, rgba(255,255,255,.03) 0%, transparent 20%),
    var(--dark);
  color: var(--dt);
}
.theme-ink {
  background:
    radial-gradient(circle at 80% 10%, rgba(218,41,28,.16) 0%, transparent 26%),
    linear-gradient(160deg, #0A0C12 0%, #0E1018 100%);
  color: var(--dt);
}
.theme-light {
  background: linear-gradient(160deg, var(--light) 0%, var(--light-2) 100%);
  color: var(--lt);
}
.theme-light .menu-btn span { background: rgba(19,15,12,.65); }
.theme-light .controls button { border-color: var(--line-l); color: var(--lt); background: rgba(255,255,255,.4); }

/* ─── Controls ──────────────────────────────────────────── */
.controls {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 100;
  display: flex;
  gap: 8px;
}
.controls button {
  min-width: 88px;
  padding: 10px 16px;
  border: 1px solid var(--line-d);
  background: rgba(0,0,0,.3);
  backdrop-filter: blur(8px);
  color: var(--dt);
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: all .2s;
}
.controls button:hover:not(:disabled) { border-color: rgba(255,255,255,.25); }
.controls button:disabled { opacity: .3; cursor: default; }

/* ─── Typography ─────────────────────────────────────────── */
.kicker {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--dt-m);
}
.theme-light .kicker { color: var(--lt-m); }

.display-hero {
  font-size: clamp(68px,7.8vw,116px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.038em;
}
.display-xl {
  font-size: clamp(54px,6.2vw,96px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.03em;
}
.display-lg {
  font-size: clamp(40px,4.8vw,76px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.025em;
}
.display-md {
  font-size: clamp(28px,3vw,46px);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -.02em;
}
.lead {
  font-size: clamp(17px,1.6vw,22px);
  font-weight: 400;
  line-height: 1.72;
  color: var(--dt-m);
}
.theme-light .lead { color: var(--lt-m); }

.body-text {
  font-size: 17px;
  line-height: 1.76;
  color: var(--dt-m);
}
.theme-light .body-text { color: var(--lt-m); }

.tag-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 36px;
}
.tag-row span {
  padding-top: 10px;
  border-top: 1px solid rgba(255,255,255,.16);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--dt-m);
  min-width: 120px;
}
.theme-light .tag-row span {
  border-top-color: var(--line-l);
  color: var(--lt-m);
}

/* ─── Icons ──────────────────────────────────────────────── */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.icon svg {
  display: block;
}
.icon-circle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 1.5px solid var(--line-d);
  background: rgba(255,255,255,.04);
  color: rgba(255,255,255,.55);
  flex-shrink: 0;
}
.icon-circle.accent {
  border-color: var(--acc-border);
  background: var(--acc-faint);
  color: var(--acc);
  box-shadow: 0 0 20px rgba(218,41,28,.15);
}
.theme-light .icon-circle {
  border-color: var(--line-l);
  background: rgba(19,15,12,.04);
  color: rgba(19,15,12,.45);
}
.icon-wrap {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.6);
  flex-shrink: 0;
}
.theme-light .icon-wrap {
  background: rgba(19,15,12,.06);
  color: rgba(19,15,12,.5);
}
.icon-wrap.accent-wrap {
  background: var(--acc-faint);
  color: var(--acc);
}

/* ─── Divider line ───────────────────────────────────────── */
.rule {
  height: 1px;
  background: var(--line-d);
}
.theme-light .rule { background: var(--line-l); }
.rule-accent { background: linear-gradient(90deg, var(--acc), transparent 60%); }

/* ─── Quote block ────────────────────────────────────────── */
.quote-block {
  padding-top: 20px;
  border-top: 1px solid var(--acc-border);
}
.quote-block p {
  font-size: clamp(22px,2.4vw,36px);
  font-weight: 300;
  line-height: 1.4;
  letter-spacing: -.01em;
}
.theme-light .quote-block p { color: var(--lt); }

/* ─── Before/After card ─────────────────────────────────── */
.ba-card {
  padding: 22px 24px;
  border-radius: 10px;
  border: 1px solid var(--line-d);
  background: rgba(255,255,255,.03);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.ba-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}
.ba-num {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--acc);
}
.ba-role {
  font-size: 18px;
  font-weight: 600;
  color: var(--dt);
}
.ba-body { display: flex; flex-direction: column; gap: 10px; }
.ba-row {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 12px;
  align-items: start;
}
.ba-label {
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 600;
  padding-top: 3px;
  flex-shrink: 0;
}
.ba-label.before { color: rgba(255,255,255,.3); }
.ba-label.after  { color: var(--acc); }
.ba-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--dt-m);
}
.ba-text.after-text { color: var(--dt); }
.ba-divider { height: 1px; background: var(--line-d); }

/* ─── Comparison card ────────────────────────────────────── */
.cmp-card {
  padding: 28px 26px;
  border-radius: 10px;
  border: 1px solid var(--line-l);
  background: rgba(255,255,255,.6);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.cmp-card.highlight {
  border-color: var(--acc-border);
  background: rgba(255,255,255,.85);
}
.cmp-card-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cmp-icon-wrap {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--line-l);
  background: rgba(19,15,12,.04);
  color: rgba(19,15,12,.5);
}
.cmp-card.highlight .cmp-icon-wrap {
  border-color: var(--acc-border);
  background: var(--acc-faint);
  color: var(--acc);
}
.cmp-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--lt);
}
.cmp-tag {
  display: inline-block;
  padding: 3px 8px;
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  border-radius: 3px;
  background: rgba(19,15,12,.06);
  color: var(--lt-m);
}
.cmp-card.highlight .cmp-tag {
  background: var(--acc-faint);
  color: var(--acc);
}
.cmp-rows { display: flex; flex-direction: column; gap: 12px; }
.cmp-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-top: 12px;
  border-top: 1px solid var(--line-l);
}
.cmp-row-label {
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lt-m);
}
.cmp-row-val {
  font-size: 15px;
  line-height: 1.5;
  color: var(--lt);
  font-weight: 500;
}

/* ─── Flow step ──────────────────────────────────────────── */
.flow-steps { display: flex; flex-direction: column; gap: 0; }
.flow-step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  align-items: start;
  padding: 24px 0;
  position: relative;
}
.flow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 27px; top: 62px; bottom: -24px;
  width: 1px;
  background: var(--line-l);
}
.flow-num {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 1.5px solid var(--line-l);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--lt-m);
  flex-shrink: 0;
  background: rgba(255,255,255,.6);
}
.flow-step.accent-step .flow-num {
  border-color: var(--acc-border);
  color: var(--acc);
  background: var(--acc-faint);
}
.flow-body { display: flex; flex-direction: column; gap: 6px; padding-top: 12px; }
.flow-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--lt);
}
.flow-desc {
  font-size: 15px;
  line-height: 1.65;
  color: var(--lt-m);
}

/* ─── Evo timeline ───────────────────────────────────────── */
.evo-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  position: relative;
  padding-top: 72px;
}
.evo-track::before {
  content: '';
  position: absolute;
  top: 35px;
  left: calc(12.5% + 16px);
  right: calc(12.5% + 16px);
  height: 1px;
  background: linear-gradient(90deg,
    rgba(255,255,255,.08),
    rgba(255,255,255,.15) 33%,
    rgba(255,255,255,.15) 66%,
    var(--acc-border));
}
.evo-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
  position: relative;
}
.evo-dot {
  width: 56px; height: 56px;
  border-radius: 50%;
  border: 1.5px solid var(--line-d);
  background: rgba(255,255,255,.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.4);
  position: relative;
  z-index: 2;
}
.evo-node.active .evo-dot {
  border-color: var(--acc-border);
  background: var(--acc-faint);
  color: var(--acc);
  box-shadow: 0 0 28px rgba(218,41,28,.2);
}
.evo-content { display: flex; flex-direction: column; gap: 8px; }
.evo-year {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--dt-m);
}
.evo-node.active .evo-year { color: var(--acc); }
.evo-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.015em;
  color: var(--dt);
}
.evo-node.active .evo-name { color: #fff; }
.evo-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--dt-m);
  max-width: 180px;
  margin: 0 auto;
}

/* ─── Industry map ───────────────────────────────────────── */
.map-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 32px;
  align-content: center;
}
.map-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line-l);
}
.map-item-icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  background: rgba(19,15,12,.06);
  color: rgba(19,15,12,.45);
  flex-shrink: 0;
}
.map-item.accent-item .map-item-icon {
  background: var(--acc-faint);
  color: var(--acc);
}
.map-item-body { flex: 1; }
.map-item-title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--lt);
  margin-bottom: 4px;
}
.map-item.accent-item .map-item-title { color: var(--acc); }
.map-item-desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--lt-m);
}

/* ─── Setup grid ─────────────────────────────────────────── */
.setup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.setup-card {
  padding: 28px 28px 26px;
  border-radius: 10px;
  border: 1px solid var(--line-d);
  background: rgba(255,255,255,.03);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.setup-card-head { display: flex; flex-direction: column; gap: 12px; }
.setup-card-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.015em;
  color: var(--dt);
}
.setup-card-desc {
  font-size: 15px;
  line-height: 1.68;
  color: var(--dt-m);
}

/* ─── Cover timeline ─────────────────────────────────────── */
.cov-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 28px;
}
.cov-timeline::before {
  content: '';
  position: absolute;
  left: 9px; top: 20px; bottom: 20px;
  width: 1px;
  background: linear-gradient(180deg,
    rgba(255,255,255,.08),
    rgba(255,255,255,.12) 40%,
    var(--acc-border));
}
.cov-t-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 18px 0;
  position: relative;
}
.cov-t-dot {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.05);
  flex-shrink: 0;
  position: relative;
  left: -26px;
  margin-right: -18px;
  margin-top: 3px;
  z-index: 2;
}
.cov-t-item.active .cov-t-dot {
  border-color: var(--acc);
  background: var(--acc);
  box-shadow: 0 0 12px rgba(218,41,28,.5);
}
.cov-t-body { display: flex; flex-direction: column; gap: 4px; }
.cov-t-year {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--dt-m);
}
.cov-t-item.active .cov-t-year { color: var(--acc); }
.cov-t-name {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: rgba(255,255,255,.55);
}
.cov-t-item.active .cov-t-name { color: var(--dt); }
.cov-t-sub {
  font-size: 13px;
  line-height: 1.5;
  color: var(--dt-m);
}

/* ─── Orbital SVG ────────────────────────────────────────── */
.hex-svg {
  width: 100%;
  height: 100%;
  max-height: 480px;
}

/* ─── Impact bar ─────────────────────────────────────────── */
.impact-bar-wrap { display: flex; flex-direction: column; gap: 6px; }
.impact-bar-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.impact-bar-track {
  height: 3px;
  background: rgba(19,15,12,.1);
  border-radius: 2px;
  overflow: hidden;
}
.impact-bar-fill {
  height: 100%;
  background: var(--acc);
  border-radius: 2px;
}

/* ─── Trend arrow ────────────────────────────────────────── */
.trend-arrow {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 18px 0;
  position: relative;
}
.trend-arrow::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, rgba(19,15,12,.15), var(--acc));
  transform: translateY(-50%);
  z-index: 0;
}
.trend-end {
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  z-index: 1;
}
.trend-end:first-child {
  padding-right: 20px;
  background: var(--light);
}
.trend-end:last-child {
  padding-left: 20px;
  background: var(--light);
  margin-left: auto;
}
.trend-end-label {
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lt-m);
}
.trend-end-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--lt);
}
.trend-end:last-child .trend-end-title { color: var(--acc); }

/* ─── Slide-specific layouts ─────────────────────────────── */

/* Slide 1: Cover */
.s-cover {
  display: grid;
  grid-template-columns: 1fr .8fr;
  gap: 60px;
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
}
.cover-left { display: flex; flex-direction: column; gap: 24px; }
.cover-right {
  padding-left: 48px;
  border-left: 1px solid var(--line-d);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cover-right-label {
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--dt-m);
  margin-bottom: 6px;
}

/* Slide 2: Why it matters */
.s-why {
  display: flex;
  flex-direction: column;
  gap: 44px;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}
.why-head { display: flex; flex-direction: column; gap: 16px; }
.why-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid var(--line-l);
}
.why-card-head { display: flex; align-items: center; gap: 14px; }
.why-card-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.015em;
  color: var(--lt);
}
.why-card-body { display: flex; flex-direction: column; gap: 12px; }
.why-card-desc { font-size: 15px; line-height: 1.68; color: var(--lt-m); }
.why-statement {
  padding-top: 20px;
  border-top: 1px solid var(--line-l);
}
.why-statement p {
  font-size: clamp(20px, 2.2vw, 32px);
  font-weight: 400;
  line-height: 1.4;
  color: var(--lt);
  letter-spacing: -.01em;
}

/* Slide 3: AI Evolution */
.s-evo {
  display: flex;
  flex-direction: column;
  gap: 48px;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}
.evo-head { display: flex; flex-direction: column; gap: 12px; }

/* Slide 4: Industry map */
.s-map {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 56px;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}
.map-left {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.map-right { display: flex; flex-direction: column; gap: 16px; }
.map-right-head { display: flex; flex-direction: column; gap: 10px; margin-bottom: 6px; }
.map-insight {
  padding-top: 18px;
  border-top: 1px solid var(--line-l);
  grid-column: 1 / -1;
}
.map-insight p {
  font-size: clamp(16px,1.6vw,22px);
  color: var(--lt-m);
  line-height: 1.5;
}

/* Slide 5: Impact */
.s-impact {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 56px;
  align-items: stretch;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}
.impact-left { display: flex; flex-direction: column; gap: 24px; justify-content: center; }
.impact-right { display: flex; flex-direction: column; gap: 14px; justify-content: center; }

/* Slide 6: OpenClaw */
.s-trend {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}
.trend-head { display: flex; flex-direction: column; gap: 12px; }
.cmp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* Slide 7: Feishu value */
.s-feishu {
  display: flex;
  flex-direction: column;
  gap: 44px;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}
.feishu-head { text-align: center; display: flex; flex-direction: column; gap: 14px; align-items: center; }
.feature-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feat-card {
  padding: 32px 26px;
  border-radius: 10px;
  border-top: 2px solid var(--line-d);
  background: rgba(255,255,255,.03);
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 280px;
  justify-content: space-between;
}
.feat-card.accent-feat { border-top-color: var(--acc); }
.feat-card-body { display: flex; flex-direction: column; gap: 10px; }
.feat-card-kicker { font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--dt-m); }
.feat-card-title { font-size: 26px; font-weight: 700; letter-spacing: -.02em; color: var(--dt); }
.feat-card-desc { font-size: 15px; line-height: 1.68; color: var(--dt-m); }

/* Slide 8: Demo flow */
.s-demo {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 60px;
  align-items: center;
  max-width: 1380px;
  margin: 0 auto;
  width: 100%;
}
.demo-left { display: flex; flex-direction: column; gap: 20px; }

/* Slide 9: Setup */
.s-setup {
  display: flex;
  flex-direction: column;
  gap: 36px;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}
.setup-head { display: flex; flex-direction: column; gap: 14px; }

/* Slide 10: Closing */
.s-closing {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
}
.closing-top { display: flex; justify-content: space-between; align-items: flex-start; }
.closing-num {
  font-size: 86px;
  font-weight: 800;
  line-height: .9;
  letter-spacing: -.05em;
  color: rgba(19,15,12,.12);
}
.closing-bot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.closing-list { display: flex; flex-direction: column; gap: 12px; }
.closing-list-head { font-size: 14px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--lt-m); margin-bottom: 4px; }
.closing-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 17px;
  line-height: 1.6;
  color: var(--lt);
}
.closing-item::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--acc);
  flex-shrink: 0;
  margin-top: 8px;
}
.closing-quote {
  padding: 28px 30px;
  border-radius: 10px;
  border: 1px solid var(--line-l);
  background: rgba(19,15,12,.04);
}
.closing-quote p {
  font-size: clamp(18px,2vw,26px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--lt);
  letter-spacing: -.01em;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 1340px) {
  :root { --pad: 60px 60px 70px; }
  .s-map, .s-cover, .s-demo, .s-impact { gap: 40px; }
  .evo-track { grid-template-columns: 1fr 1fr; gap: 24px; padding-top: 0; }
  .evo-track::before { display: none; }
  .cmp-grid { grid-template-columns: 1fr; gap: 12px; }
  .cmp-grid .cmp-rows { display: grid; grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 1160px) {
  :root { --pad: 56px 40px 64px; }
  .s-cover, .s-map, .s-impact, .s-demo { grid-template-columns: 1fr; }
  .cover-right { display: none; }
  .why-cols, .feature-cols, .setup-grid { grid-template-columns: 1fr 1fr; }
  .cmp-grid { grid-template-columns: repeat(3,1fr); }
  .closing-bot { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  :root { --pad: 48px 24px 56px; }
  .why-cols, .feature-cols, .setup-grid, .cmp-grid { grid-template-columns: 1fr; }
  .map-list { grid-template-columns: 1fr; }
  .slide { overflow-y: auto; }
}