:root {
  --navy: #041D6D;
  --red: #BF0002;
  --blue: #1675F6;
  --ink: #231815;
  --slate: #2F3337;
  --paper: #F5F7FA;
  --white: #FFFFFF;
  --line: #C9D4E8;
  --soft-blue: #E8EDF5;
  --display: "STZhongsong", "FZSong", "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", SimSun, serif;
  --sans: "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei UI", Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  overflow-x: hidden;
}

button, a { font: inherit; }

button:focus-visible,
a:focus-visible,
[data-zoomable]:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 200;
  background: var(--white);
  color: var(--navy);
  padding: .75rem 1rem;
}

.skip-link:focus { top: 1rem; }

.stage-chrome {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.25rem, 3vw, 3.5rem);
  pointer-events: none;
  color: var(--navy);
  mix-blend-mode: normal;
}

.brand-wordmark {
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .08em;
  pointer-events: auto;
}

.stage-actions {
  display: flex;
  gap: .35rem;
  pointer-events: auto;
}

.text-button {
  border: 1px solid currentColor;
  border-radius: 0;
  background: rgba(255,255,255,.92);
  color: var(--navy);
  min-width: 4.25rem;
  padding: .55rem .85rem;
  cursor: pointer;
}

.text-button:hover { background: var(--soft-blue); }

main { position: relative; }

.slide {
  min-height: 100svh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.slide-inner {
  width: min(86vw, 1360px);
  min-height: 100svh;
  margin: 0 auto;
  padding: clamp(6.5rem, 11vh, 9rem) 0 clamp(7rem, 12vh, 9.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.theme-navy { background: var(--navy); color: var(--white); }
.theme-paper { background: var(--paper); color: var(--ink); }
.theme-white { background: var(--white); color: var(--ink); }

h1, h2, p { margin-top: 0; }

h1, h2 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -.035em;
  text-wrap: balance;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3.2rem, 5.4vw, 5.6rem);
  line-height: 1.12;
  margin-bottom: 2rem;
}

h2 {
  font-size: clamp(2.2rem, 3.2vw, 3.65rem);
  line-height: 1.22;
  margin-bottom: 1.75rem;
}

.lead {
  max-width: 42rem;
  color: var(--slate);
  font-size: clamp(1.12rem, 1.2vw, 1.28rem);
  line-height: 1.9;
}

.lead-light { color: rgba(255,255,255,.78); }

.scene-note {
  max-width: 60rem;
  margin: 1.5rem 0 0;
  color: #555E69;
  font-size: 1rem;
  line-height: 1.85;
}

.scene-note-light { color: rgba(255,255,255,.72); }

.explain-list {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.explain-list li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  padding: .7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: .98rem;
  line-height: 1.55;
}

.explain-list strong { color: var(--navy); }
.explain-list span { color: #626B76; }

.section-mark {
  margin-bottom: 1.25rem;
  width: max-content;
  padding: .38rem .62rem;
  background: var(--red);
  color: var(--white);
  font-size: .9rem;
  font-weight: 800;
  letter-spacing: .1em;
}

.section-mark-light { background: var(--white); color: var(--navy); }

.cover-field {
  position: absolute;
  top: 0;
  right: 0;
  width: 27vw;
  height: 100%;
  background: var(--paper);
  border-left: 1px solid rgba(22,117,246,.22);
}

.cover-field::after {
  content: "";
  position: absolute;
  left: -1.15rem;
  top: 16vh;
  width: 2.3rem;
  height: 2.3rem;
  background: var(--red);
}

.cover-field-note {
  position: absolute;
  left: clamp(2rem, 4vw, 4.5rem);
  bottom: 16vh;
  color: var(--navy);
}

.cover-field-note span {
  display: block;
  margin-bottom: 1.4rem;
  color: var(--blue);
  font-size: .9rem;
  font-weight: 800;
  letter-spacing: .12em;
}

.cover-field-note strong {
  display: block;
  max-height: 18rem;
  font-family: var(--display);
  font-size: clamp(1.2rem, 1.45vw, 1.5rem);
  line-height: 1.65;
  letter-spacing: .1em;
  writing-mode: vertical-rl;
}

.cover-layout { align-items: flex-start; }

.cover-context {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: rgba(255,255,255,.76);
  font-size: clamp(1rem, 1.05vw, 1.12rem);
  font-weight: 700;
  letter-spacing: .12em;
  margin-bottom: 7vh;
}

.internal-badge {
  padding: .35rem .55rem;
  background: var(--red);
  color: var(--white);
  font-size: .82rem;
  letter-spacing: .08em;
}

.cover-subtitle {
  max-width: 35rem;
  color: rgba(255,255,255,.76);
  font-size: clamp(1.15rem, 1.32vw, 1.38rem);
  line-height: 1.7;
}

.cover-themes {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.28);
  border-bottom: 1px solid rgba(255,255,255,.28);
}

.cover-themes span { padding: .65rem 1.1rem .65rem 0; margin-right: 1.1rem; color: rgba(255,255,255,.82); font-size: .96rem; }
.cover-themes span + span { position: relative; }
.cover-themes span + span::before { content: ""; position: absolute; left: -1.1rem; top: .8rem; width: 1px; height: 1rem; background: rgba(255,255,255,.24); }

.cover-meta {
  display: flex;
  gap: 2.5rem;
  margin-top: 5vh;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255,255,255,.32);
  font-size: 1.02rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(20rem, .75fr) minmax(32rem, 1.25fr);
  grid-template-rows: auto 1fr;
  gap: 2rem 5vw;
  align-items: center;
}

.split-hook { grid-template-columns: 11rem minmax(23rem, .9fr) minmax(31rem, 1.1fr); grid-template-rows: 1fr; }

.hook-number {
  width: 10rem;
  height: 10rem;
  display: grid;
  place-content: center;
  text-align: center;
  border: 1px solid var(--red);
  background: rgba(255,255,255,.55);
  color: var(--red);
  font-family: Arial, sans-serif;
  font-weight: 900;
  line-height: 1;
}

.hook-number span { font-size: 5.2rem; letter-spacing: -.08em; transform: translateX(-.05em); }
.hook-number small { margin-top: .3rem; font-family: var(--sans); font-size: .88rem; font-weight: 700; letter-spacing: .22em; }

.hook-copy h2 { font-size: clamp(2.15rem, 2.9vw, 3.35rem); }

.fact-line {
  margin: 2.5rem 0 0;
  border-top: 2px solid var(--navy);
}

.fact-line div {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  padding: .8rem 0;
  border-bottom: 1px solid var(--line);
}

.fact-line dt { color: var(--blue); font-weight: 700; }
.fact-line dd { margin: 0; font-weight: 700; }
.case-note { margin: 1.2rem 0 0; color: #59626D; font-size: 1rem; line-height: 1.75; }

.evidence {
  margin: 0;
  position: relative;
  background: var(--white);
  border: 1px solid var(--navy);
  padding: .6rem;
  cursor: zoom-in;
}

.evidence::before {
  content: "";
  position: absolute;
  inset: .5rem -.5rem -.5rem .5rem;
  z-index: -1;
  background: #D8E1F0;
}

.evidence img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 64vh;
  object-fit: contain;
  object-position: center;
  background: var(--white);
}

.evidence figcaption {
  padding: .65rem .35rem .15rem;
  color: var(--slate);
  font-size: .94rem;
  line-height: 1.5;
}

.evidence-tall img { max-height: 67vh; }
.evidence-wide img { max-height: 54vh; }
.evidence-short img { max-height: 29vh; object-fit: cover; object-position: center 52%; }
.evidence-dark { border-color: rgba(255,255,255,.65); }
.evidence-dark::before { background: rgba(255,255,255,.24); }

.heading-row {
  display: grid;
  grid-template-columns: minmax(9rem,.32fr) minmax(26rem,1fr) minmax(20rem,.7fr);
  gap: 3vw;
  align-items: end;
  margin-bottom: clamp(2.5rem, 6vh, 5rem);
}

.heading-row .section-mark { align-self: start; padding-top: 1rem; }
.heading-row h2, .heading-row .lead { margin-bottom: 0; }
.heading-row.compact { grid-template-columns: minmax(8rem,.25fr) minmax(23rem,.85fr) minmax(20rem,.7fr); margin-bottom: 2.5rem; }

.ecosystem { border-top: 2px solid var(--navy); }

.ecosystem-layer {
  min-height: 5.4rem;
  display: grid;
  grid-template-columns: minmax(9rem,.25fr) 1fr;
  align-items: center;
  gap: 2rem;
  border-bottom: 1px solid var(--line);
}

.ecosystem-layer span { color: var(--blue); font-size: 1rem; font-weight: 800; }
.ecosystem-layer strong { font-size: clamp(1.16rem, 1.65vw, 1.82rem); letter-spacing: .01em; }
.ecosystem-final { background: var(--navy); color: var(--white); padding-inline: 1.5rem; border-bottom: 0; }
.ecosystem-final span { color: #9DC8FF; }
.ecosystem + .scene-note { margin-left: auto; max-width: 58rem; text-align: right; }

.scope-layout .heading-row { margin-bottom: 2rem; }
.scope-grid { display: grid; grid-template-columns: minmax(27rem,.92fr) minmax(25rem,1.08fr); gap: 5vw; align-items: stretch; }
.tool-roles { border-top: 2px solid var(--navy); }
.tool-roles div { min-height: 4.4rem; display: grid; grid-template-columns: 8.5rem 1fr; gap: 1.5rem; align-items: center; border-bottom: 1px solid var(--line); }
.tool-roles span { color: var(--blue); font-size: .94rem; font-weight: 800; }
.tool-roles strong { color: var(--navy); font-size: 1.04rem; line-height: 1.55; }
.core-shift { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--navy); }
.core-shift li { min-height: 4.4rem; display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; align-items: center; border-bottom: 1px solid var(--line); }
.core-shift > li > span { color: var(--red); font-size: .92rem; font-weight: 900; }
.core-shift strong { color: var(--navy); font-family: var(--display); font-size: 1.2rem; }
.core-shift p { margin: .2rem 0 0; color: #626B76; font-size: .92rem; line-height: 1.5; }
.scope-layout > .statement { margin-top: 1.6rem; }
.scope-layout > .scope-note { margin-top: .65rem; }

.evolution {
  list-style: none;
  margin: 2.5rem 0 3rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255,255,255,.35);
  border-bottom: 1px solid rgba(255,255,255,.35);
}

.evolution li {
  min-height: 14rem;
  padding: 2rem 2.4rem 2rem 0;
  border-right: 1px solid rgba(255,255,255,.25);
}

.evolution li + li { padding-left: 2.4rem; }
.evolution li:last-child { border-right: 0; }
.evolution span { color: #9DC8FF; font-size: .95rem; font-weight: 800; }
.evolution strong { display: block; margin: 2.2rem 0 .8rem; font-family: var(--display); font-size: clamp(1.5rem, 1.8vw, 2rem); }
.evolution p { color: rgba(255,255,255,.7); line-height: 1.75; }

.statement {
  max-width: 54rem;
  margin: 2.5rem 0 0;
  color: var(--navy);
  font-family: var(--display);
  font-size: clamp(1.35rem, 1.65vw, 1.72rem);
  font-weight: 700;
  line-height: 1.5;
}

.statement-light { color: var(--white); }

.media-layout {
  display: grid;
  grid-template-columns: minmax(24rem,.85fr) minmax(31rem,1.15fr);
  gap: 7vw;
  align-items: center;
}

.media-layout-reverse { grid-template-columns: minmax(31rem,1.1fr) minmax(24rem,.9fr); }
.office-layout { grid-template-columns: minmax(25rem,.8fr) minmax(38rem,1.2fr); gap: 5vw; }
.office-layout .evidence img { max-height: 62vh; }
.media-copy blockquote {
  margin: 3rem 0 0;
  padding: 1.4rem 0 0;
  border-top: 4px solid var(--red);
  color: var(--navy);
  font-family: var(--display);
  font-size: clamp(1.4rem, 1.75vw, 1.85rem);
  font-weight: 700;
  line-height: 1.45;
}

.report-layout { display: grid; grid-template-rows: auto 1fr; }
.report-images { display: grid; grid-template-columns: .9fr 1.1fr; gap: 3vw; min-height: 0; align-items: center; }
.report-images .evidence img { max-height: 40vh; }
.report-layout:not(.monitoring-combined) .report-images .evidence img { max-height: 32vh; }
.monitoring-combined .report-images .evidence img { max-height: 31vh; }
.evidence-crop img { object-fit: cover; object-position: top; }
.report-statement { margin: 1.2rem 0 0; max-width: none; }
.report-note { margin-top: .35rem; }

.record-flow { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 1rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.record-flow span { padding: .7rem 1rem; color: var(--navy); font-size: .98rem; font-weight: 700; text-align: center; }
.record-flow span + span { border-left: 1px solid var(--line); }

.monitor-spec {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(10rem,1fr));
  border-top: 1px solid rgba(255,255,255,.35);
}

.monitor-spec span {
  padding: .9rem 0;
  border-bottom: 1px solid rgba(255,255,255,.24);
  color: #9DC8FF;
  font-weight: 700;
}

.monitor-spec span:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.24); }
.monitor-spec span:nth-child(even) { padding-left: 1rem; }
.monitor-spec-compact { grid-template-columns: repeat(6,1fr); margin-top: .8rem; border-bottom: 1px solid rgba(255,255,255,.35); }
.monitor-spec-compact span { padding: .65rem .4rem; border-bottom: 0; border-right: 1px solid rgba(255,255,255,.24); text-align: center; font-size: .92rem; }
.monitor-spec-compact span:nth-child(even) { padding-left: .4rem; }
.monitor-spec-compact span:last-child { border-right: 0; }

.split-data, .split-contributor { grid-template-columns: minmax(26rem,.8fr) minmax(34rem,1.2fr); grid-template-rows: 1fr; }

.before-after {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 2px solid var(--navy);
}

.before-after div { padding: 1.4rem; }
.before-after div + div { background: var(--navy); color: var(--white); }
.before-after span { display: block; color: var(--blue); font-size: .96rem; font-weight: 800; margin-bottom: .8rem; }
.before-after div + div span { color: #9DC8FF; }
.before-after strong { font-family: var(--display); font-size: clamp(1.35rem, 1.8vw, 1.85rem); line-height: 1.45; }

.formula {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem;
  margin-top: 3rem;
  color: var(--navy);
}

.formula span, .formula strong { border-bottom: 3px solid var(--blue); padding: .4rem .1rem; font-size: clamp(1.05rem,1.5vw,1.5rem); }
.formula strong { border-color: var(--red); color: var(--red); }
.formula b { font-weight: 400; color: var(--line); }

.skill-layout { display: grid; grid-template-columns: .8fr 1.2fr; grid-template-rows: auto 1fr; gap: 1.5rem 5vw; }
.skill-layout .heading-row { display: block; margin: 0; }
.skill-ladder { align-self: center; border-top: 2px solid var(--navy); }
.skill-ladder div { display: grid; grid-template-columns: 10rem 1fr; gap: 2rem; align-items: baseline; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.skill-ladder span { color: var(--blue); font-size: .98rem; font-weight: 800; }
.skill-ladder strong { font-family: var(--display); color: var(--navy); font-size: clamp(1.35rem,1.85vw,1.95rem); }
.skill-layout .evidence { grid-column: 1 / -1; align-self: end; }
.skill-combined { grid-template-columns: minmax(25rem,.85fr) minmax(36rem,1.15fr); gap: 5vw; }
.skill-ladder-compact { margin-top: 2rem; }
.skill-ladder-compact div { padding: .85rem 0; }
.stacked-evidence { display: grid; gap: 1.15rem; }
.stacked-evidence .evidence img { max-height: 26vh; object-fit: contain; }

.quote-layout { justify-content: center; }
.quote-before { color: rgba(255,255,255,.7); font-family: var(--display); font-size: clamp(1.35rem,1.6vw,1.7rem); margin-bottom: 1rem; }
.quote-slide h2 { max-width: 17ch; font-size: clamp(2.8rem,4.2vw,4.55rem); }
.agent-flow { display: grid; grid-template-columns: repeat(6,1fr); margin-top: 2.5rem; border-top: 1px solid rgba(255,255,255,.35); border-bottom: 1px solid rgba(255,255,255,.35); }
.agent-flow span { padding: 1rem .75rem; border-right: 1px solid rgba(255,255,255,.24); text-align: center; color: #9DC8FF; font-size: 1rem; font-weight: 700; }
.agent-flow span:last-child { border-right: 0; color: var(--white); background: var(--red); }
.quote-foot { margin: 2rem 0 0; color: rgba(255,255,255,.72); font-size: 1.1rem; }
.responsibility-line { display: grid; grid-template-columns: 1fr 1fr; margin: 1.25rem 0 0; border-top: 1px solid rgba(255,255,255,.28); border-bottom: 1px solid rgba(255,255,255,.28); }
.responsibility-line div { display: grid; grid-template-columns: 8rem 1fr; gap: 1rem; padding: .85rem 1.2rem  .85rem 0; }
.responsibility-line div + div { padding-left: 1.2rem; border-left: 1px solid rgba(255,255,255,.24); }
.responsibility-line dt { color: #9DC8FF; font-weight: 800; }
.responsibility-line dd { margin: 0; color: rgba(255,255,255,.82); line-height: 1.55; }
.responsibility-line + .quote-foot { margin-top: 1rem; }

.projects-layout { display: grid; grid-template-columns: minmax(23rem,.72fr) minmax(35rem,1.28fr); gap: 6vw; align-items: center; }
.projects-layout .heading-row { display: block; margin: 0; }
.project-list { border-top: 2px solid var(--navy); }
.project-list a {
  display: grid;
  grid-template-columns: 3rem minmax(12rem,.8fr) 1fr;
  gap: 1rem;
  align-items: center;
  min-height: 4.4rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
}
.project-list a:hover { color: var(--navy); background: var(--paper); }
.project-list span { color: var(--blue); font-size: .92rem; font-weight: 800; }
.project-list strong { font-size: 1.13rem; }
.project-list small { color: #616974; font-size: .98rem; }

.mcp-quickstart { margin-top: 1.35rem; padding: .9rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.mcp-quickstart span { display: block; margin-bottom: .45rem; color: var(--red); font-size: .92rem; font-weight: 800; }
.mcp-quickstart code { display: block; color: var(--navy); font-size: 1rem; font-weight: 700; line-height: 1.55; overflow-wrap: anywhere; }
.projects-copy .statement { margin-top: 1.35rem; font-size: clamp(1.15rem,1.4vw,1.48rem); }
.projects-copy .caution { margin-top: 1.2rem; }
.audience-split { margin: 1.2rem 0 0; border-top: 1px solid var(--line); }
.audience-split div { display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; padding: .72rem 0; border-bottom: 1px solid var(--line); }
.audience-split dt { color: var(--blue); font-weight: 800; }
.audience-split dd { margin: 0; color: #59626D; line-height: 1.55; }

.caution { margin-top: 2.25rem; padding-top: 1rem; border-top: 1px solid var(--red); color: #5D6269; line-height: 1.7; }

.ppt-layout { display: grid; grid-template-columns: minmax(28rem,.85fr) minmax(36rem,1.15fr); gap: 6vw; align-items: center; }
.ppt-steps { list-style: none; margin: 2.5rem 0 0; padding: 0; border-top: 2px solid var(--navy); }
.ppt-steps li { display: grid; grid-template-columns: 2.2rem 1fr; grid-template-rows: auto auto; gap: .2rem 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.ppt-steps span { grid-row: 1 / 3; color: var(--red); font-size: 1.2rem; font-weight: 900; }
.ppt-steps strong { color: var(--navy); }
.ppt-steps small { color: #676F79; line-height: 1.55; }
.prompt-pair { display: grid; grid-template-columns: 1fr 1fr; margin-top: 1.35rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.prompt-pair a { display: grid; gap: .25rem; padding: .8rem 1rem .8rem 0; color: inherit; text-decoration: none; }
.prompt-pair a + a { padding-left: 1rem; border-left: 1px solid var(--line); }
.prompt-pair span { color: #68717B; font-size: .9rem; }
.prompt-pair strong { color: var(--navy); font-size: 1rem; line-height: 1.5; }
.prompt-pair a:hover strong, .prompt-pair a:focus-visible strong { color: var(--red); }

.limits-layout { display: grid; grid-template-columns: minmax(28rem,.9fr) minmax(30rem,1.1fr); grid-template-rows: auto auto; gap: 2rem 7vw; align-items: center; }
.limits-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid rgba(255,255,255,.38); }
.limits-list li { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; padding: 1.2rem 0; border-bottom: 1px solid rgba(255,255,255,.25); }
.limits-list span { color: #9DC8FF; font-size: .8rem; font-weight: 800; }
.limits-list strong { font-size: clamp(1.05rem,1.6vw,1.55rem); }
.limits-list small { display: block; margin-top: .3rem; color: rgba(255,255,255,.68); font-size: .92rem; line-height: 1.5; }
.limits-layout .statement { grid-column: 1 / -1; }
.limits-layout .limits-note { grid-column: 1 / -1; margin-top: -.75rem; }

.takeaways-layout { display: grid; grid-template-columns: minmax(18rem,.48fr) minmax(38rem,1.52fr); gap: 8vw; align-items: center; }
.takeaway-title h2 { color: var(--navy); font-size: clamp(2.4rem,3.3vw,3.45rem); }
.takeaway-list { list-style: none; padding: 0; margin: 0; border-top: 2px solid var(--navy); }
.takeaway-list li { display: grid; grid-template-columns: 3rem 1fr; grid-template-rows: auto auto; gap: .3rem 1rem; padding: 1.15rem 0; border-bottom: 1px solid var(--line); }
.takeaway-list span { grid-row: 1 / 3; color: var(--red); font-size: 1.7rem; font-weight: 900; line-height: 1; }
.takeaway-link { display: grid; gap: .3rem; color: inherit; text-decoration: none; }
.takeaway-link:hover strong, .takeaway-link:focus-visible strong { color: var(--red); }
.takeaway-link:focus-visible { outline: 2px solid var(--blue); outline-offset: .35rem; }
.takeaway-list strong { color: var(--navy); font-size: clamp(1.15rem,1.45vw,1.45rem); }
.takeaway-list p { margin: 0; color: #626A74; line-height: 1.55; }
.takeaway-repo { display: block; width: max-content; max-width: 100%; margin-top: 2rem; padding-top: 1rem; border-top: 2px solid var(--navy); color: inherit; text-decoration: none; }
.takeaway-repo span { display: block; margin-bottom: .35rem; color: var(--blue); font-size: .9rem; font-weight: 800; }
.takeaway-repo strong { color: var(--navy); font-size: 1.05rem; }
.takeaway-repo:hover strong, .takeaway-repo:focus-visible strong { color: var(--red); }

.closing-plane { position: absolute; inset: 0 0 0 68%; background: var(--navy); }
.closing-plane::before { content: ""; position: absolute; left: -1.25rem; bottom: 18vh; width: 2.5rem; height: 2.5rem; background: var(--red); }
.closing-layout h2 { max-width: 18ch; color: var(--navy); font-size: clamp(2.7rem,4vw,4.35rem); }
.closing-note { margin-top: 2rem; color: var(--slate); font-size: clamp(1rem,1.5vw,1.4rem); line-height: 1.7; }
.closing-pillars { display: grid; grid-template-columns: repeat(4,1fr); width: min(44rem,62vw); margin-top: 1.5rem; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.closing-pillars span { padding: .8rem .6rem; color: var(--navy); font-size: .98rem; font-weight: 800; text-align: center; }
.closing-pillars span + span { border-left: 1px solid var(--line); }
.thanks { margin: 4rem 0 0; color: var(--red); font-weight: 800; letter-spacing: .12em; }

.progress-console {
  position: fixed;
  z-index: 60;
  left: clamp(1rem,3vw,3.5rem);
  right: clamp(1rem,3vw,3.5rem);
  bottom: 1.2rem;
  height: 2.8rem;
  display: grid;
  grid-template-columns: minmax(15rem,.8fr) minmax(12rem,1fr) minmax(8rem,.45fr);
  align-items: center;
  gap: 1.4rem;
  background: rgba(255,255,255,.95);
  border: 1px solid var(--line);
  color: var(--navy);
  padding: .5rem .8rem;
}

.progress-label { display: flex; align-items: center; gap: .85rem; min-width: 0; }
.progress-label span:first-child { color: var(--red); font-weight: 900; }
.progress-label span:last-child { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: .94rem; font-weight: 700; }
.progress-track { height: 3px; background: var(--soft-blue); }
.progress-track span { display: block; width: 7.69%; height: 100%; background: var(--red); transition: width .25s ease; }
.progress-hint { text-align: right; color: #626B78; font-size: .86rem; }

.overview {
  width: min(88vw, 1100px);
  max-height: 84vh;
  padding: 0;
  border: 2px solid var(--navy);
  border-radius: 0;
  color: var(--ink);
  background: var(--white);
}

.overview::backdrop, .lightbox::backdrop { background: rgba(4,12,39,.82); }
.overview-head { position: sticky; top: 0; display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 1.5rem; border-bottom: 2px solid var(--navy); background: var(--white); }
.overview-head h2 { margin: 0; color: var(--navy); font-family: var(--sans); font-size: 1.45rem; letter-spacing: 0; }
#overview-nav { padding: 0 1.5rem 1.5rem; }
.overview-group { display: grid; grid-template-columns: minmax(11rem,.36fr) minmax(26rem,1.64fr); border-bottom: 1px solid var(--line); }
.overview-group h3 { margin: 0; padding: 1.15rem 1rem 1.15rem .4rem; background: var(--paper); color: var(--navy); font-family: var(--display); font-size: 1rem; line-height: 1.55; }
.overview-items { display: grid; grid-template-columns: 1fr 1fr; }
#overview-nav button { display: grid; grid-template-columns: 2.5rem 1fr; gap: .8rem; text-align: left; border: 0; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); padding: 1rem .8rem; cursor: pointer; }
.overview-items button:nth-last-child(-n+2) { border-bottom: 0; }
#overview-nav button:hover { color: var(--navy); background: var(--paper); }
#overview-nav b { color: var(--red); }

.lightbox {
  width: min(96vw, 1800px);
  height: 94vh;
  margin: auto;
  padding: 3.5rem 1rem 1rem;
  border: 0;
  border-radius: 0;
  background: var(--white);
}
.lightbox img { display: block; width: 100%; height: calc(100% - 2.5rem); object-fit: contain; }
.lightbox p { margin: .6rem 0 0; text-align: center; color: var(--slate); font-size: .82rem; }
.lightbox-close { position: absolute; right: 1rem; top: .7rem; border: 1px solid var(--navy); border-radius: 0; background: var(--white); color: var(--navy); padding: .45rem .8rem; cursor: pointer; }

@media (max-width: 1100px) {
  .slide { overflow: auto; }
  .slide-inner { min-height: 100svh; justify-content: center; }
  .split-hook { grid-template-columns: .38fr .62fr; }
  .split-hook .evidence { grid-column: 1 / -1; }
  .hook-number { width: 9rem; height: 9rem; }
  .hook-number span { font-size: 4.6rem; }
  .media-layout, .media-layout-reverse, .ppt-layout, .projects-layout, .split-data, .split-contributor, .scope-grid, .skill-combined { grid-template-columns: 1fr 1fr; gap: 4vw; }
  .heading-row, .heading-row.compact { grid-template-columns: 7rem 1fr; }
  .heading-row .lead { grid-column: 2; }
  .evidence img, .evidence-tall img { max-height: 48vh; }
  .project-list a { grid-template-columns: 2.5rem 1fr; }
  .project-list small { grid-column: 2; padding-bottom: .7rem; }
}

@media (max-width: 760px) {
  html { scroll-snap-type: none; }
  .stage-chrome { height: 3.75rem; padding-inline: 1rem; }
  .brand-wordmark { max-width: 9rem; font-size: .68rem; }
  .slide { min-height: auto; overflow: hidden; }
  .slide-inner { width: min(90vw, 42rem); min-height: auto; padding: 6.5rem 0 7rem; }
  .slide-cover .slide-inner, .slide-closing .slide-inner { min-height: 100svh; }
  h1 { font-size: clamp(3.4rem,18vw,5.6rem); }
  h2 { font-size: clamp(2.25rem,11.5vw,4rem); }
  .cover-field { width: 12vw; }
  .cover-field::after { left: -.65rem; width: 1.3rem; height: 1.3rem; }
  .cover-field-note { display: none; }
  .cover-context { align-items: flex-start; flex-direction: column; gap: .65rem; }
  .split, .split-hook, .media-layout, .media-layout-reverse, .ppt-layout, .projects-layout, .split-data, .split-contributor, .limits-layout, .takeaways-layout, .skill-layout, .scope-grid, .skill-combined { display: flex; flex-direction: column; align-items: stretch; }
  .hook-number { font-size: 11rem; margin-bottom: 1rem; }
  .heading-row, .heading-row.compact { display: block; }
  .heading-row .lead { margin-top: 1rem; }
  .ecosystem-layer { grid-template-columns: 1fr; gap: .35rem; padding: 1rem 0; }
  .ecosystem-final { padding-inline: 1rem; }
  .evolution { grid-template-columns: 1fr; }
  .evolution li, .evolution li + li { min-height: 0; padding: 1.5rem 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.24); }
  .evolution li:last-child { border-bottom: 0; }
  .evolution strong { margin: .7rem 0 .4rem; }
  .report-images { grid-template-columns: 1fr; }
  .record-flow { grid-template-columns: 1fr; }
  .record-flow span + span { border-left: 0; border-top: 1px solid var(--line); }
  .tool-roles div { grid-template-columns: 7rem 1fr; }
  .stacked-evidence .evidence img { max-height: 42vh; }
  .monitor-spec { grid-template-columns: 1fr; }
  .monitor-spec span:nth-child(odd) { border-right: 0; }
  .monitor-spec span:nth-child(even) { padding-left: 0; }
  .monitor-spec-compact { grid-template-columns: repeat(2,1fr); }
  .monitor-spec-compact span, .monitor-spec-compact span:nth-child(even) { padding: .7rem .4rem; border-bottom: 1px solid rgba(255,255,255,.24); }
  .monitor-spec-compact span:nth-child(odd) { border-right: 1px solid rgba(255,255,255,.24); }
  .skill-layout .evidence { order: 3; }
  .skill-ladder div { grid-template-columns: 7rem 1fr; }
  .agent-flow { grid-template-columns: repeat(2,1fr); }
  .agent-flow span { border-bottom: 1px solid rgba(255,255,255,.24); }
  .responsibility-line { grid-template-columns: 1fr; }
  .responsibility-line div, .responsibility-line div + div { grid-template-columns: 7rem 1fr; padding: .85rem 0; border-left: 0; }
  .responsibility-line div + div { border-top: 1px solid rgba(255,255,255,.24); }
  .project-list a { grid-template-columns: 2.5rem 1fr; }
  .audience-split div { grid-template-columns: 6rem 1fr; }
  .prompt-pair { grid-template-columns: 1fr; }
  .prompt-pair a, .prompt-pair a + a { padding: .8rem 0; border-left: 0; }
  .prompt-pair a + a { border-top: 1px solid var(--line); }
  .takeaway-list { margin-top: 1rem; }
  .closing-pillars { grid-template-columns: repeat(2,1fr); width: 100%; }
  .closing-pillars span:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .closing-pillars span:nth-child(4) { border-top: 1px solid var(--line); }
  .ecosystem + .scene-note { margin-left: 0; text-align: left; }
  .closing-plane { inset: auto 0 0 0; height: 9vh; }
  .closing-plane::before { left: auto; right: 1.5rem; top: -1rem; width: 2rem; height: 2rem; }
  .progress-console { left: .7rem; right: .7rem; bottom: .6rem; grid-template-columns: 1fr 5rem; }
  .progress-track { grid-column: 1 / -1; grid-row: 2; }
  .progress-hint { display: none; }
  .overview-group { grid-template-columns: 1fr; }
  .overview-items { grid-template-columns: 1fr; }
  .overview-group h3 { padding-left: .8rem; }
  #overview-nav button { border-left: 0; }
  .overview-items button:nth-last-child(-n+2) { border-bottom: 1px solid var(--line); }
  .overview-items button:last-child { border-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .progress-track span { transition: none; }
}

@media print {
  .stage-chrome, .progress-console, .overview, .lightbox { display: none !important; }
  .slide { min-height: 100vh; break-after: page; }
}