:root {
  --brand: #0f3d2e;
  --brand-soft: #143d2f;
  --amber: #C8883A;
  --amber-soft: rgba(200,136,58,0.28);
  --fg:    #f4f2ec;
  --fg2:   rgba(244,242,236,0.55);
  --fg3:   rgba(244,242,236,0.12);
  --card:  rgba(244,242,236,0.05);
  --card-border: rgba(244,242,236,0.10);
  --bad:   #c45a4a;
  --good:  #6b9572;
}

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

html, body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--brand);
  color: var(--fg);
  height: 100vh;
  overflow: hidden;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}

.slide {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: clamp(44px,6vh,72px) clamp(60px,9vw,130px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.46s cubic-bezier(0.4,0,0.2,1);
  overflow: hidden;
}
.slide.active { opacity: 1; pointer-events: all; }
.slide-center { align-items: center; text-align: center; justify-content: center; }
.slide-light { background: #f5efe0; color: var(--brand); }
.slide-light .label { color: var(--brand); opacity: 0.6; }
.slide-light h1, .slide-light h2, .slide-light h3 { color: var(--brand); }
.slide-light .body { color: rgba(15,61,46,0.7); }
.slide-light .body strong { color: var(--brand); }
.slide-light .impact-text { color: rgba(15,61,46,0.75); }
.slide-light .impact-text strong { color: var(--brand); }

.label {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 18px;
}

h1 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  font-weight: 400;
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--fg);
}

h2 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--fg);
  max-width: 900px;
}

h3 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--fg);
}

.body {
  font-family: 'Inter', sans-serif;
  font-size: clamp(0.95rem, 1.35vw, 1.1rem);
  line-height: 1.68;
  color: var(--fg2);
  max-width: 720px;
}
.body strong { color: var(--fg); font-weight: 600; }
.em { font-family: 'Instrument Serif', serif; font-style: italic; color: var(--amber); }

.divider {
  width: 36px; height: 1px;
  background: var(--amber);
  opacity: 0.55;
  margin: 18px 0;
}
.slide-center .divider { margin: 18px auto; }

#s1 { background: radial-gradient(ellipse 60% 50% at 80% 80%, rgba(200,136,58,0.06) 0%, transparent 70%), var(--brand); }

.cover-tag {
  margin-top: 40px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border: 1px solid var(--amber-soft);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  color: var(--fg2);
  letter-spacing: 0.04em;
}
.cover-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--amber); opacity: 0.7; }

.huge-stat {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(7rem, 18vw, 16rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--fg);
}
.huge-stat .amber { color: var(--amber); }
.huge-sub {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  color: var(--amber);
  margin-top: 24px;
  max-width: 740px;
}
.huge-source {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--fg2);
  margin-top: 28px;
}

.pull-quote {
  position: relative;
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--fg);
  max-width: 1000px;
  padding: 30px 40px;
  border-left: 3px solid var(--amber);
}

.stat-block {
  margin-top: 30px;
  padding: 18px 22px;
  border-left: 2px solid var(--amber);
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--fg2);
  max-width: 660px;
  line-height: 1.55;
}
.stat-block strong { color: var(--fg); font-style: normal; font-family: 'Inter', sans-serif; font-weight: 600; }

.impact-list { display: flex; flex-direction: column; gap: 18px; margin-top: 28px; max-width: 800px; }
.impact-item { display: flex; gap: 16px; align-items: flex-start; }
.impact-mark { width: 6px; height: 6px; border-radius: 50%; background: var(--amber); opacity: 0.7; flex-shrink: 0; margin-top: 8px; }
.impact-text { font-family: 'Inter', sans-serif; font-size: clamp(0.95rem, 1.3vw, 1.05rem); line-height: 1.65; color: var(--fg2); }
.impact-text strong { color: var(--fg); font-weight: 600; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 36px;
  width: 100%;
  max-width: 1000px;
}
.stat-grid.four { grid-template-columns: repeat(4, 1fr); }
.stat-grid.two { grid-template-columns: repeat(2, 1fr); }
.stat-cell {
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 26px 30px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-cell:first-child { border-radius: 12px 0 0 12px; }
.stat-cell:last-child { border-radius: 0 12px 12px 0; }
.stat-grid.solo .stat-cell:first-child, .stat-grid.solo .stat-cell:last-child { border-radius: 12px; }
.stat-n {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2rem, 3.6vw, 3.4rem);
  font-weight: 400;
  color: var(--fg);
  line-height: 1;
}
.stat-n .amber { color: var(--amber); }
.stat-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--fg2);
  line-height: 1.45;
  text-transform: uppercase;
}
.stat-desc { font-size: 13px; color: var(--fg2); line-height: 1.5; margin-top: 4px; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
  width: 100%;
  max-width: 1100px;
}
.two-col.asym { grid-template-columns: 1.2fr 1fr; }

.optics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
  width: 100%;
  max-width: 980px;
}
.optics-cell {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 26px 24px;
  display: flex;
  gap: 18px;
  align-items: center;
}
.optics-letter {
  font-family: 'Instrument Serif', serif;
  font-size: 2.8rem;
  font-weight: 400;
  color: var(--amber);
  background: rgba(200,136,58,0.08);
  border: 1px solid rgba(200,136,58,0.25);
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  flex-shrink: 0;
}
.optics-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 4px;
}
.optics-desc { font-size: 12px; color: var(--fg2); line-height: 1.5; }

.optics-detail {
  display: flex; align-items: flex-start; gap: 28px;
  width: 100%; max-width: 1080px; margin-top: 14px;
}
.optics-detail .optics-letter { width: 96px; height: 96px; font-size: 4rem; }
.optics-detail .body { margin-top: 6px; }

.journey-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 36px;
  width: 100%;
  max-width: 1100px;
}
.journey-stage {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 10px;
}
.journey-pct {
  font-family: 'Instrument Serif', serif;
  font-size: 2.2rem;
  color: var(--amber);
  line-height: 1;
}
.journey-name { font-size: 14px; font-weight: 600; color: var(--fg); letter-spacing: 0.02em; }
.journey-row { font-size: 11px; color: var(--fg2); line-height: 1.55; }
.journey-row strong { color: var(--fg); font-weight: 600; display: block; font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--amber); margin-bottom: 2px; }

.ranked-list { display: flex; flex-direction: column; gap: 14px; margin-top: 28px; max-width: 880px; width: 100%; }
.ranked-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px 24px;
}
.ranked-row.top { background: rgba(200,136,58,0.12); border-color: var(--amber-soft); }
.ranked-num {
  font-family: 'Instrument Serif', serif;
  font-size: 2.4rem;
  color: var(--amber);
  line-height: 1;
}
.ranked-title { font-size: 16px; font-weight: 600; color: var(--fg); margin-bottom: 4px; }
.ranked-desc { font-size: 13px; color: var(--fg2); line-height: 1.55; }

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 28px;
  width: 100%; max-width: 1100px;
}
.compare-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px 28px;
}
.compare-card.bad { border-color: rgba(196,90,74,0.35); }
.compare-card.good { border-color: rgba(107,149,114,0.4); }
.compare-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; margin-bottom: 14px; }
.compare-card.bad .compare-tag { color: var(--bad); }
.compare-card.good .compare-tag { color: var(--good); }
.compare-body { font-family: 'Inter', sans-serif; font-size: 13.5px; line-height: 1.65; color: var(--fg2); white-space: pre-wrap; }
.compare-body strong { color: var(--fg); font-weight: 600; }

.bar-chart { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; margin-top: 40px; width: 100%; max-width: 1000px; align-items: end; }
.bar-col { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.bar-val { font-family: 'Instrument Serif', serif; font-size: 1.4rem; color: var(--fg); }
.bar-val.neg { color: var(--bad); }
.bar-val.pos { color: var(--good); }
.bar-fill { width: 100%; min-height: 30px; background: var(--bad); opacity: 0.65; border-radius: 4px 4px 0 0; }
.bar-fill.pos { background: var(--good); }
.bar-axis { height: 1px; background: var(--fg3); width: 100%; grid-column: 1 / -1; margin-top: 4px; }
.bar-label { font-size: 11px; color: var(--fg2); text-align: center; font-weight: 500; letter-spacing: 0.04em; }

.sequence-flow {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin-top: 32px; width: 100%; max-width: 1100px; align-items: stretch;
}
.seq-step {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px 22px;
  position: relative;
}
.seq-step.amber { background: rgba(200,136,58,0.12); border-color: var(--amber-soft); }
.seq-day { font-size: 10px; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--amber); margin-bottom: 10px; }
.seq-name { font-size: 16px; font-weight: 600; color: var(--fg); margin-bottom: 6px; }
.seq-desc { font-size: 12px; color: var(--fg2); line-height: 1.55; }

.tool-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 28px; max-width: 1100px; width: 100%; }
.tool-card { background: var(--card); border: 1px solid var(--card-border); border-radius: 12px; overflow: hidden; }
.tool-head { padding: 14px 22px; background: rgba(244,242,236,0.04); font-size: 13px; font-weight: 600; color: var(--fg); letter-spacing: 0.04em; border-bottom: 1px solid var(--card-border); }
.tool-row { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 12px 22px; border-bottom: 1px solid var(--card-border); }
.tool-row:last-child { border-bottom: none; }
.tool-name { font-size: 13px; font-weight: 600; color: var(--fg); }
.tool-desc { font-size: 12.5px; color: var(--fg2); line-height: 1.5; }

.quote-block { margin-top: 32px; max-width: 760px; border-left: 2px solid var(--amber); padding: 18px 24px; }
.quote-text { font-family: 'Instrument Serif', serif; font-style: italic; font-size: clamp(1rem, 1.5vw, 1.2rem); color: var(--fg2); line-height: 1.6; margin-bottom: 12px; }
.quote-attr { font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--amber); }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--amber-soft);
  border-radius: 100px;
  font-size: 11px; font-weight: 500;
  color: var(--fg2);
  letter-spacing: 0.04em;
  margin-top: 18px;
}
.pill.solid { background: rgba(200,136,58,0.12); color: var(--amber); }

.section-divider { background: var(--brand); }
.section-divider h1 { font-size: clamp(3rem, 7vw, 6.5rem); text-align: center; }
.section-divider .label { text-align: center; width: 100%; }

.cta-qr {
  margin-top: 36px;
  width: 220px; height: 220px;
  background: #f4f2ec;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: var(--brand);
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 24px;
  text-align: center;
  position: relative;
}
.cta-qr::before {
  content: '';
  position: absolute; inset: 16px;
  background:
    repeating-linear-gradient(0deg, var(--brand) 0 6px, transparent 6px 12px),
    repeating-linear-gradient(90deg, var(--brand) 0 6px, transparent 6px 12px);
  opacity: 0.6;
  border-radius: 4px;
}
.cta-qr span { position: relative; background: #f4f2ec; padding: 8px 12px; z-index: 1; border-radius: 4px; }

.framework-banner {
  margin-top: 28px;
  padding: 18px 28px;
  background: rgba(200,136,58,0.12);
  border: 1px solid var(--amber-soft);
  border-radius: 12px;
  font-size: 14px;
  color: var(--fg);
  max-width: 800px;
}
.framework-banner strong { color: var(--amber); font-weight: 600; }

.nav { position: fixed; bottom: 32px; right: clamp(60px,9vw,130px); display: flex; align-items: center; gap: 18px; z-index: 100; }
.nav-dots { display: flex; gap: 5px; align-items: center; flex-wrap: nowrap; max-width: 520px; overflow: hidden; }
.dot { width: 4px; height: 4px; border-radius: 50%; background: rgba(244,242,236,0.2); cursor: pointer; transition: all 0.25s; flex-shrink: 0; }
.dot.active { background: var(--amber); width: 16px; border-radius: 3px; }
.slide-light ~ .nav .dot { background: rgba(15,61,46,0.2); }
.slide-light ~ .nav .dot.active { background: var(--amber); }
.nav-btn { width: 36px; height: 36px; border-radius: 50%; border: 1px solid rgba(244,242,236,0.15); background: rgba(244,242,236,0.04); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s; color: var(--fg2); font-size: 14px; }
.nav-btn:hover { border-color: rgba(200,136,58,0.4); color: var(--amber); background: rgba(200,136,58,0.06); }

.slide-num { position: fixed; bottom: 38px; left: clamp(60px,9vw,130px); font-size: 11px; font-weight: 500; color: rgba(244,242,236,0.22); letter-spacing: 0.08em; z-index: 100; }
.brand-mark { position: fixed; top: 32px; left: clamp(60px,9vw,130px); font-family: 'Instrument Serif', serif; font-size: 18px; letter-spacing: -0.01em; color: var(--fg2); z-index: 50; }
.brand-logo { position: fixed; top: 28px; left: clamp(60px,9vw,130px); width: clamp(110px, 11vw, 160px); z-index: 50; opacity: 0.9; }
.brand-logo svg { width: 100%; height: auto; }

.demo-button {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 22px 44px;
  background: var(--amber);
  color: var(--brand);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 14px;
  border: none;
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
  margin-top: 36px;
  box-shadow: 0 8px 24px rgba(200,136,58,0.18);
}
.demo-button:hover { background: #d99a4c; transform: translateY(-3px); box-shadow: 0 14px 36px rgba(200,136,58,0.32); }
.demo-button:active { transform: translateY(0); }
.demo-button::after { content: '→'; font-size: 22px; font-weight: 400; transition: transform 0.22s; }
.demo-button:hover::after { transform: translateX(6px); }

.demo-target {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(1.4rem,2.4vw,2rem);
  color: var(--amber);
  margin-top: 12px;
}

.demo-context {
  margin-top: 28px;
  max-width: 720px;
  font-family: 'Inter', sans-serif;
  font-size: clamp(0.95rem,1.3vw,1.05rem);
  color: var(--fg2);
  line-height: 1.65;
  text-align: center;
}
.demo-context strong { color: var(--fg); font-weight: 600; }

.two-path { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; width: 100%; max-width: 1100px; }
.path-card { background: var(--card); border: 1px solid var(--card-border); border-radius: 12px; padding: 28px 32px; }
.path-card.amber { background: rgba(200,136,58,0.10); border-color: var(--amber-soft); }
.path-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--amber); margin-bottom: 14px; }
.path-name { font-family: 'Instrument Serif', serif; font-size: clamp(1.6rem,2.4vw,2rem); color: var(--fg); margin-bottom: 12px; }
.path-body { font-size: 14px; color: var(--fg2); line-height: 1.65; }
.path-body strong { color: var(--fg); font-weight: 600; }

.dual-chart { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; margin-top: 28px; width: 100%; max-width: 1080px; }
.dual-chart .chart-block { display: flex; flex-direction: column; gap: 14px; }
.chart-title { font-size: 12px; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--amber); }

.three-layer { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 36px; width: 100%; max-width: 1100px; }
.layer-card { background: var(--card); border: 1px solid var(--card-border); border-radius: 12px; padding: 26px 26px; }
.layer-num { font-family: 'Instrument Serif', serif; font-size: 1.6rem; color: var(--amber); opacity: 0.5; margin-bottom: 6px; }
.layer-name { font-size: 16px; font-weight: 600; color: var(--fg); margin-bottom: 4px; }
.layer-sub  { font-size: 11px; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--amber); margin-bottom: 14px; }
.layer-body { font-size: 13px; color: var(--fg2); line-height: 1.6; }
.layer-body strong { color: var(--fg); font-weight: 600; }

.checklist-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 28px; max-width: 1040px; width: 100%; }
.checklist-item { background: var(--card); border: 1px solid var(--card-border); border-radius: 10px; padding: 16px 22px; display: flex; align-items: flex-start; gap: 14px; }
.checklist-tick { width: 24px; height: 24px; border-radius: 50%; background: rgba(200,136,58,0.18); border: 1px solid var(--amber-soft); display: flex; align-items: center; justify-content: center; color: var(--amber); font-size: 13px; font-weight: 600; flex-shrink: 0; margin-top: 1px; }
.checklist-name { font-size: 14px; font-weight: 600; color: var(--fg); margin-bottom: 4px; letter-spacing: 0.01em; }
.checklist-desc { font-size: 12.5px; color: var(--fg2); line-height: 1.5; }

@media print {
  html, body { overflow: visible; height: auto; }
  .slide { position: relative; opacity: 1 !important; pointer-events: all !important; page-break-after: always; height: 100vh; }
  .nav, .slide-num, .brand-mark, .brand-logo, .demo-button { display: none; }
}