:root{
  --bg: #fbfaf7;
  --paper: #ffffff;
  --ink: #1f2a33;
  --muted: #556270;

  --border: rgba(28, 35, 41, 0.10);
  --shadow: 0 10px 26px rgba(18, 26, 33, 0.08);

  --soft-1: #f3f2ee;
  --soft-2: #f6f0ee;
  --soft-3: #eef5f4;

  --radius: 18px;

  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{ box-sizing: border-box; }
html, body{ margin: 0; padding: 0; }
body{
  font-family: var(--font);
  color: var(--ink);
  background: radial-gradient(1200px 700px at 30% -10%, #f0f6ff 0%, transparent 65%),
              radial-gradient(1100px 800px at 85% 5%, #fff1ea 0%, transparent 60%),
              var(--bg);
  line-height: 1.45;
}

.page{
  width: min(1040px, calc(100% - 32px));
  margin: 20px auto 56px;
}

.hero{
  display: grid;
  gap: 18px;
  padding: 18px;
}

.hero-head{
  background: linear-gradient(180deg, #ffffff 0%, #ffffff 65%, rgba(255,255,255,0.5) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(16px, 2.6vw, 26px);
  box-shadow: var(--shadow);
}

.kicker{
  margin: 0 0 10px;
  color: var(--muted);
  font-weight: 650;
  letter-spacing: 0.02em;
}

h1{
  margin: 0 0 10px;
  font-size: clamp(28px, 3.8vw, 44px);
  line-height: 1.08;
}

.lede{
  margin: 0;
  font-size: clamp(16px, 2.2vw, 18.5px);
  color: #33414f;
  max-width: 70ch;
}

.hero-figure{
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: clip;
  box-shadow: var(--shadow);
}

.hero-figure img{
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero-figure figcaption{
  padding: 12px 14px 14px;
  color: var(--muted);
  font-size: 14px;
}

.takeaway-strip{
  background: linear-gradient(180deg, #ffffff 0%, #ffffff 70%, rgba(255,255,255,0.55) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
}

.takeaways{
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.takeaways li{
  display: grid;
  gap: 6px;
  padding: 10px 10px 12px;
  border-radius: 14px;
  border: 1px dashed rgba(38, 52, 64, 0.16);
  background: linear-gradient(180deg, rgba(245,247,250,0.8) 0%, rgba(255,255,255,0.9) 100%);
}

.chip{
  display: inline-flex;
  width: fit-content;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  color: #2a3a45;
  background: linear-gradient(180deg, #f6fbff 0%, #ffffff 100%);
  border: 1px solid rgba(36, 60, 80, 0.12);
}

.section-head{
  padding: 20px 18px 8px;
  margin-top: 10px;
}

.section-head h2{
  margin: 0 0 8px;
  font-size: clamp(20px, 2.8vw, 28px);
  letter-spacing: -0.01em;
}

.section-sub{
  margin: 0;
  color: var(--muted);
  max-width: 75ch;
}

/* STAGE GRID */
.stage-grid{
  display: grid;
  gap: 14px;
  padding: 10px 0 10px;
  grid-template-columns: 1fr;
  align-items: stretch;
}

/* spine sits in its own row on mobile */
.spine{
  order: -1;
}

.spine-card{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff 0%, #ffffff 66%, rgba(255,255,255,0.65) 100%);
  box-shadow: var(--shadow);
  padding: 14px 14px 10px;
}

.axis-labels{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.axis-chip{
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(245, 246, 248, 0.9);
  border: 1px solid rgba(32, 45, 55, 0.10);
  color: #3b4a57;
  font-size: 13px;
}

.axis-chip .dot{
  width: 10px;
  height: 10px;
  border-radius: 999px;
  display: inline-block;
  border: 2px solid rgba(30, 42, 52, 0.25);
  background: #ffffff;
}

.axis-left .dot{ background: #eaf1ff; }
.axis-right .dot{ background: #fff0e7; }
.axis-bottom{ margin-left: auto; }
.axis-bottom .arrow{
  font-weight: 900;
  font-size: 14px;
}

.curve-svg{
  width: 100%;
  height: 520px;
  display: block;
  border-radius: 14px;
  background:
    radial-gradient(800px 400px at 40% 15%, rgba(79, 170, 227, 0.12) 0%, transparent 62%),
    radial-gradient(900px 480px at 80% 55%, rgba(231, 111, 81, 0.13) 0%, transparent 58%),
    linear-gradient(180deg, rgba(245,247,250,0.7) 0%, rgba(255,255,255,0.92) 100%);
  border: 1px solid rgba(28, 35, 41, 0.10);
  overflow: visible;
}

.gridline{
  stroke: rgba(35, 50, 60, 0.18);
  stroke-width: 1.2;
  stroke-dasharray: 4 6;
}

.axis-line{
  stroke: rgba(35, 50, 60, 0.22);
  stroke-width: 1.6;
}

.axis-title{
  font-size: 16px;
  font-weight: 750;
  fill: rgba(35, 50, 60, 0.68);
}

.curve-path{
  fill: none;
  stroke: rgba(35, 50, 60, 0.72);
  stroke-width: 5.2;
  stroke-linecap: round;
}

.markers circle{
  stroke: rgba(18, 26, 33, 0.18);
  stroke-width: 2;
}

.marker-label{
  font-size: 15px;
  font-weight: 800;
  fill: rgba(25, 33, 40, 0.86);
}

.marker-glow{
  opacity: 0.25;
}

.dip-note .dip-tick{
  stroke: rgba(25, 33, 40, 0.35);
  stroke-width: 2;
  stroke-linecap: round;
}

.dip-note .dip-text{
  font-size: 14px;
  font-weight: 750;
  fill: rgba(25, 33, 40, 0.55);
}

.spine-caption{
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* STAGE CARDS */
.stage-card{
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--paper);
  box-shadow: var(--shadow);
  padding: 14px;
  display: grid;
  gap: 10px;
}

.stage-head{
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 10px 8px;
  border-radius: 14px;
  border: 1px solid rgba(28, 35, 41, 0.09);
  background: linear-gradient(180deg, rgba(248,249,251,0.95) 0%, rgba(255,255,255,0.92) 100%);
}

.badge{
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-weight: 850;
  border: 1px solid rgba(28, 35, 41, 0.14);
  background: rgba(255,255,255,0.95);
}

.head-text h3{
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.stage-mini{
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 13.5px;
}

.icon{
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--accent);
}
.icon svg{
  width: 38px;
  height: 38px;
}

.stage-body{
  padding: 2px 6px 6px;
  display: grid;
  gap: 10px;
}

.emotion{
  margin: 0;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(28, 35, 41, 0.10);
  background: linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(248,249,251,0.96) 100%);
  font-weight: 700;
  color: rgba(24, 33, 40, 0.92);
}

.label{
  font-weight: 800;
  color: rgba(24, 33, 40, 0.82);
}

.psy, .micro, .nudge{
  margin: 0;
  color: rgba(41, 53, 62, 0.92);
}

.nudge{
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px dashed rgba(28, 35, 41, 0.18);
  background: linear-gradient(180deg, rgba(245, 252, 250, 0.55) 0%, rgba(255,255,255,0.9) 100%);
}

/* stat block */
.stat-block{
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(28, 35, 41, 0.10);
  background:
    radial-gradient(340px 180px at 35% 10%, rgba(255, 203, 175, 0.22) 0%, transparent 58%),
    linear-gradient(180deg, rgba(255,255,255,0.96) 0%, rgba(248,249,251,0.92) 100%);
  display: grid;
  gap: 6px;
}

.stat{
  display: inline-flex;
  gap: 10px;
  align-items: baseline;
  flex-wrap: wrap;
}
.stat .big{
  font-size: 34px;
  letter-spacing: -0.02em;
  font-weight: 900;
}
.stat .small{
  font-size: 14px;
  font-weight: 800;
  color: rgba(46, 59, 69, 0.85);
}
.stat-note{
  margin: 0;
  color: rgba(67, 83, 95, 0.9);
  font-size: 13.5px;
}

/* stage figure */
.stage-figure{
  margin: 6px 0 0;
  border-radius: 14px;
  overflow: clip;
  border: 1px solid rgba(28, 35, 41, 0.12);
  background: rgba(255,255,255,0.9);
}
.stage-figure img{
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.stage-figure figcaption{
  padding: 10px 12px 12px;
  color: var(--muted);
  font-size: 13.5px;
}

/* TONES (color shift progression) */
.tone-1{ --accent:#5b7f98; background: linear-gradient(180deg, rgba(232,242,250,0.55) 0%, #ffffff 55%); }
.tone-2{ --accent:#4e6c86; background: linear-gradient(180deg, rgba(220,235,246,0.55) 0%, #ffffff 55%); }
.tone-3{ --accent:#4d5e7a; background: linear-gradient(180deg, rgba(222,230,244,0.42) 0%, #ffffff 60%); }
.tone-4{ --accent:#3f4a63; background: linear-gradient(180deg, rgba(226,225,236,0.38) 0%, #ffffff 62%); }
.tone-5{ --accent:#2a9d8f; background: linear-gradient(180deg, rgba(228,250,246,0.55) 0%, #ffffff 55%); }
.tone-6{ --accent:#2d9ac6; background: linear-gradient(180deg, rgba(228,248,255,0.55) 0%, #ffffff 55%); }
.tone-7{ --accent:#e48a2a; background: linear-gradient(180deg, rgba(255,243,227,0.66) 0%, #ffffff 52%); }
.tone-8{ --accent:#e76f51; background: linear-gradient(180deg, rgba(255,234,226,0.70) 0%, #ffffff 50%); }

/* CLOSING */
.closing{
  padding: 22px 0 10px;
}
.closing-card{
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid rgba(28, 35, 41, 0.10);
  background:
    radial-gradient(800px 260px at 25% 0%, rgba(45, 154, 198, 0.14) 0%, transparent 55%),
    radial-gradient(900px 320px at 90% 35%, rgba(231, 111, 81, 0.16) 0%, transparent 58%),
    linear-gradient(180deg, rgba(255,255,255,0.96) 0%, rgba(248,249,251,0.92) 100%);
  box-shadow: var(--shadow);
  padding: clamp(18px, 3vw, 28px);
}

.closing-quote{
  margin: 0;
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.q-line{
  display: block;
}
.closing-save{
  margin: 12px 0 0;
  font-weight: 750;
  color: rgba(56, 71, 83, 0.9);
}

/* FOOTER */
.footer{
  padding: 14px 0 40px;
}
.footer-card{
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #ffffff 0%, rgba(255,255,255,0.82) 100%);
  box-shadow: var(--shadow);
  padding: 16px 16px 14px;
}
.footer-title{
  margin: 0 0 10px;
  font-size: 18px;
}
.refs{
  margin: 0;
  padding: 0 0 0 18px;
  color: rgba(49, 63, 74, 0.92);
}
.refs li{ margin: 8px 0; }
.meta{
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed rgba(28, 35, 41, 0.18);
  color: var(--muted);
  font-size: 13px;
}

/* RESPONSIVE DESKTOP LAYOUT */
@media (min-width: 860px){
  .hero{
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }
  .hero-figure{
    grid-column: 2;
    grid-row: 1 / span 2;
  }
  .takeaway-strip{
    grid-column: 1;
  }
  .takeaways{
    grid-template-columns: repeat(3, 1fr);
  }

  .stage-grid{
    grid-template-columns: 1fr 260px 1fr;
    gap: 16px;
  }

  .spine{
    order: 0;
    grid-column: 2;
    grid-row: 1 / span 8;
    align-self: stretch;
  }

  .spine-card{
    position: sticky;
    top: 16px;
  }

  .curve-svg{
    height: 760px;
  }

  .side-left{ grid-column: 1; }
  .side-right{ grid-column: 3; }
}

/* PRINT */
@media print{
  body{ background: white; }
  .page{ width: 100%; margin: 0; }
  .spine-card, .stage-card, .hero-head, .hero-figure, .takeaway-strip, .closing-card, .footer-card{
    box-shadow: none;
  }
}