@import url('/assets/brand.css');
:root{--mid:var(--muted);--light:#71756b;--faint:var(--line);--accent:var(--blue);--accent-soft:var(--blue-soft);--accent-border:#244bd830;--warm:#9b5d0b;--warm-soft:#9b5d0b0c;--green:#28754d;--green-soft:#28754d0c;--red:#b63a36;--red-soft:#b63a360c;--font:var(--sans)}

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; scroll-snap-type: y mandatory; overflow-y: scroll; }

  body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

  .slide {
    min-height: 100vh;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 60px 100px;
    position: relative;
  }

  .dark {
    background: var(--ink);
    color: var(--paper);
  }
  .dark .mid { color: #999; }
  .dark .light { color: #666; }

  .slide-num {
    position: absolute;
    bottom: 28px;
    right: 40px;
    font-size: 12px;
    font-weight: 500;
    color: var(--light);
    letter-spacing: 2px;
    font-variant-numeric: tabular-nums;
  }
  .dark .slide-num { color: #444; }

  .watermark {
    position: absolute;
    top: 28px;
    left: 40px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--light);
  }
  .dark .watermark { color: #444; }

  h1 {
    font-size: clamp(40px, 5.5vw, 64px);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -2px;
    margin-bottom: 16px;
  }

  h2 {
    font-size: clamp(30px, 3.5vw, 44px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 12px;
  }

  h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.3px;
  }

  .sub {
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.55;
    max-width: 720px;
  }

  .mid { color: var(--mid); }
  .light { color: var(--light); }

  .tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 5px 14px;
    border-radius: 100px;
    margin-bottom: 24px;
  }
  .tag-accent { background: var(--accent-soft); color: var(--accent); }
  .tag-warm { background: var(--warm-soft); color: #b45309; }
  .tag-green { background: var(--green-soft); color: #059669; }
  .dark .tag-accent { background: rgba(36,75,216,0.15); color: #a7bbff; }
  .dark .tag-warm { background: rgba(245,158,11,0.15); color: #fbbf24; }
  .dark .tag-green { background: rgba(16,185,129,0.15); color: #34d399; }


  .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 28px; }
  .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 22px; margin-top: 28px; }

  .card {
    background: var(--paper);
    border: 1px solid var(--faint);
    border-radius: 12px;
    padding: 28px;
  }
  .dark .card {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.08);
  }
  .card p, .card li { font-size: 17px; line-height: 1.7; color: var(--mid); }
  .dark .card p, .dark .card li { color: #999; }
  .card ul { list-style: none; margin-top: 8px; }
  .card ul li { padding: 4px 0 4px 20px; position: relative; }
  .card ul li::before {
    content: '';
    position: absolute;
    left: 0; top: 14px;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
  }
  .dark .card ul li::before { background: #a7bbff; }

  .quote {
    font-size: clamp(22px, 2.5vw, 30px);
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -0.5px;
    max-width: 760px;
    position: relative;
    padding-left: 28px;
  }
  .quote::before {
    content: '';
    position: absolute;
    left: 0; top: 4px; bottom: 4px;
    width: 4px;
    border-radius: 2px;
    background: var(--accent);
  }
  .dark .quote::before { background: #a7bbff; }

  .stat-row {
    display: flex;
    gap: 56px;
    margin-top: 32px;
    flex-wrap: wrap;
  }
  .stat-num {
    font-size: 48px;
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 1;
    color: var(--accent);
  }
  .dark .stat-num { color: #a7bbff; }
  .stat-label {
    font-size: 15px;
    color: var(--mid);
    margin-top: 6px;
    font-weight: 500;
  }

  .flow {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    flex-wrap: wrap;
  }
  .flow-step {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    background: var(--accent-soft);
    border: 1px solid var(--accent-border);
    color: var(--accent);
  }
  .dark .flow-step {
    background: rgba(167,187,255,0.1);
    border-color: rgba(167,187,255,0.2);
    color: #a7bbff;
  }
  .flow-arrow { font-size: 18px; color: var(--light); }
  .dark .flow-arrow { color: #444; }

  .pattern-num {
    font-size: 72px;
    font-weight: 900;
    color: var(--faint);
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -4px;
  }
  .dark .pattern-num { color: #1a1a1a; }

  .scenario {
    background: var(--paper);
    border: 1px solid var(--faint);
    border-radius: 10px;
    padding: 22px 26px;
    margin-top: 14px;
  }
  .dark .scenario {
    background: rgba(255,255,255,0.03);
    border-color: rgba(255,255,255,0.07);
  }
  .scenario-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
  }
  .dark .scenario-label { color: #a7bbff; }
  .scenario-prompt {
    font-size: 18px;
    line-height: 1.55;
    font-style: italic;
    color: var(--ink);
    margin-bottom: 10px;
  }
  .dark .scenario-prompt { color: #ddd; }
  .scenario-detail {
    font-size: 16px;
    line-height: 1.65;
    color: var(--mid);
  }
  .dark .scenario-detail { color: #888; }

  .badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 3px;
    margin-left: 8px;
    vertical-align: middle;
  }
  .badge-green { background: var(--green-soft); color: var(--green); }
  .badge-warm { background: var(--warm-soft); color: #b45309; }
  .badge-red { background: var(--red-soft); color: var(--red); }

  .two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 24px;
  }

  .contrast-block {
    padding: 26px;
    border-radius: 10px;
    font-size: 17px;
    line-height: 1.7;
  }
  .contrast-bad {
    background: var(--red-soft);
    border: 1px solid rgba(239,68,68,0.15);
  }
  .contrast-good {
    background: var(--green-soft);
    border: 1px solid rgba(16,185,129,0.15);
  }
  .contrast-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
  }
  .contrast-bad .contrast-label { color: var(--red); }
  .contrast-good .contrast-label { color: var(--green); }

  .icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    font-size: 20px;
    margin-bottom: 12px;
    background: var(--accent-soft);
  }
  .dark .icon { background: rgba(167,187,255,0.12); }
  .icon-warm { background: var(--warm-soft); }
  .icon-green { background: var(--green-soft); }
  .icon-red { background: var(--red-soft); }

  .takeaway-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    margin-top: 24px;
  }
  .takeaway {
    padding: 20px;
    border-radius: 10px;
    border: 1px solid var(--faint);
  }
  .dark .takeaway { border-color: rgba(255,255,255,0.08); }
  .takeaway-num {
    font-size: 28px;
    font-weight: 900;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 8px;
  }
  .dark .takeaway-num { color: #a7bbff; }
  .takeaway h4 { font-size: 14px; margin-bottom: 0; font-weight: 700; letter-spacing: -0.2px; line-height: 1.35; }
  .dark .takeaway h4 { color: #ddd; }

  .bio-row {
    display: flex;
    align-items: center;
    gap: 36px;
    margin-top: 24px;
  }
  .bio-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
  }
  .bio-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .bio-text { font-size: 18px; line-height: 1.7; color: var(--mid); max-width: 640px; }
  .dark .bio-text { color: #999; }
  .bio-links {
    margin-top: 14px;
    display: flex;
    gap: 20px;
    font-size: 15px;
    font-weight: 600;
  }
  .bio-links a {
    color: var(--accent);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .dark .bio-links a { color: #a7bbff; }
  .bio-links a:hover { text-decoration: underline; }

  .link-icon {
    display: inline-block;
    width: 18px;
    height: 18px;
  }

  .nav-dots {
    position: fixed;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 100;
  }
  .nav-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: rgba(36,75,216,0.25);
    cursor: pointer;
    transition: all 0.2s;
  }
  .nav-dot:hover, .nav-dot.active { background: var(--accent); transform: scale(1.5); }

  @media (max-width: 900px) {
    .slide { padding: 40px 28px; }
    .grid-2, .grid-3, .two-col { grid-template-columns: 1fr; }
    .takeaway-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-row { gap: 24px; }
    .bio-row { flex-direction: column; text-align: center; }
    .bio-links { justify-content: center; }
  }

/* Shared publication identity. The original lesson content stays intact. */
html{scroll-snap-type:y proximity}
.slide{padding:100px max(7.5vw,32px) 110px;min-height:100svh}
.slide.dark{--mid:#bdc2b7;--light:#adb5a6;--faint:#42473d}
.dark .mid,.dark .card p,.dark .card li,.dark .bio-text,.dark .scenario-detail{color:#bdc2b7}
.dark .light,.dark .slide-num,.dark .watermark,.dark .flow-arrow{color:#adb5a6}
h1{font-weight:450;letter-spacing:-.065em;font-size:clamp(42px,5.7vw,82px);line-height:1.08}
h2{font-weight:480;letter-spacing:-.055em;font-size:clamp(32px,3.6vw,52px)}
h3{font-weight:550;letter-spacing:-.035em}
h1 em,h2 em,.closing-title em{font-family:var(--serif);font-weight:400;font-style:italic;font-size:1.08em;color:var(--blue)}
.dark h1 em,.dark h2 em,.dark .closing-title em{color:#a7bbff}
.cover h1 em{color:#fff}
.cover{background:var(--blue)!important;color:#fff}
.cover .sub,.cover .watermark,.cover .slide-num{color:#dfe5ff}
.cover .tag{background:none!important;color:#dfe5ff!important;padding:0}
.cover .sub{max-width:650px;margin-top:20px}
.watermark{left:max(7.5vw,32px);top:35px;font:500 17px var(--sans);text-transform:none;letter-spacing:-.6px}
.brand-period{color:var(--blue)}.dark .brand-period{color:#a7bbff}.cover .brand-period{color:white}
.slide-num{font:12px var(--mono);bottom:38px;right:max(7.5vw,32px);letter-spacing:0}
.tag{font:12px/1.5 var(--mono);border-radius:0;padding:5px 0;background:none!important;letter-spacing:.06em;align-self:flex-start}
.pattern-num{font:italic 64px/1 var(--serif);letter-spacing:-.07em;color:var(--blue);margin-bottom:20px}
.dark .pattern-num{color:#a7bbff}
.card{background:transparent;border:0;border-radius:0;padding:22px 0}
.dark .card{background:transparent;border-color:#42473d}
.scenario,.contrast-block{border-radius:2px;border:1px solid var(--faint)}
.dark .scenario,.dark .contrast-block{border-color:#42473d}
.icon{border-radius:0;width:30px;height:30px;background:none!important}
.quote{font:italic clamp(25px,2.4vw,34px)/1.35 var(--serif);font-weight:400;padding-left:24px;letter-spacing:-.025em}
.quote::before{width:2px;border-radius:0}
.takeaway{border:0;padding:18px 8px 18px 0;border-radius:0}
.takeaway-num{font:italic 33px var(--serif);font-weight:400}
.stat-num{font-weight:450;letter-spacing:-.07em}
.scenario-label,.badge,.contrast-label{font-size:12px}
.badge-green{color:#28754d}.badge-warm{color:#85500b}.badge-red{color:#a32e2c}
.bio-avatar{border-radius:2px;filter:grayscale(1)}
.bio-links a{font-size:14px;font-weight:400}
.flow-step{border-radius:2px}
.disclosure{margin-top:28px;font-size:13px;line-height:1.6;color:#bdc2b7;max-width:750px}
.deck-home{position:fixed;top:35px;right:max(7.5vw,32px);z-index:101;font:13px var(--sans);color:var(--muted);text-decoration:none;padding:4px 0}
.deck-home:hover{color:var(--blue)}.on-dark .deck-home{color:#dfe5ff}
.site-address{color:inherit;text-decoration:underline;text-underline-offset:5px}
.nav-dots{right:16px;gap:0}.nav-dot{display:block;width:24px;height:24px;background:none;position:relative;transform:none!important;border-radius:0}
.nav-dot::before{content:'';position:absolute;left:10px;top:10px;width:4px;height:4px;border-radius:50%;background:#74796c}
.nav-dot.active::before,.nav-dot:hover::before{background:var(--blue);width:6px;height:6px;left:9px;top:9px}.nav-dot:hover,.nav-dot.active{background:none}
.on-dark .nav-dot::before{background:#aab59e}.on-dark .nav-dot.active::before,.on-dark .nav-dot:hover::before{background:#fff}
.deck-controls{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:101;display:flex;align-items:center;gap:20px;background:var(--paper);border:1px solid var(--line);padding:4px 8px;box-shadow:0 3px 15px #00000006}
.deck-controls[hidden]{display:none}.deck-controls button{border:0;color:var(--ink);background:transparent;cursor:pointer;font:22px var(--sans);width:40px;height:34px}.deck-controls button:disabled{opacity:.3;cursor:default}.deck-controls span{font:12px var(--mono);color:var(--muted);min-width:58px;text-align:center}
a:focus-visible,button:focus-visible{outline:2px solid var(--blue);outline-offset:4px}.on-dark a:focus-visible{outline-color:#fff}
@media(max-width:900px){.slide{padding:96px 30px 105px}.watermark{left:30px}.deck-home{right:30px}.nav-dots{display:none}.bio-row{align-items:flex-start;text-align:left}.bio-links{justify-content:flex-start}.slide-num{right:30px}.takeaway-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bio-row{flex-direction:row;gap:22px}.bio-avatar{width:80px;height:80px}.bio-text{font-size:16px}.grid-2,.grid-3,.two-col{gap:18px}.cover h1 br{display:none}.cover h1{max-width:700px}.quote{margin-top:25px}.card{padding:18px 0}.disclosure{margin-bottom:15px}}
@media(max-width:540px){.slide{padding:100px 23px 104px}.watermark{left:23px;font-size:15px}.deck-home{right:23px;font-size:12px}.slide-num{right:23px;font-size:11px}.cover h1{font-size:43px}.sub br,h2 br{display:none}.sub{font-size:18px}.bio-row{flex-direction:column}.bio-links{flex-wrap:wrap;gap:15px}.takeaway-grid{gap:14px}.takeaway h4{font-size:14px}.flow-step{font-size:13px;padding:9px 12px}.pattern-num{font-size:52px}.scenario{padding:18px}.card p,.card li,.contrast-block{font-size:16px}.deck-controls{gap:12px;bottom:20px}.deck-controls button{height:30px}.slide-num{bottom:30px;font-size:10px}.stat-num{font-size:42px}.quote{font-size:27px}.closing-title{font-size:45px}.tag{font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
@media print{html{scroll-snap-type:none}body{background:white}.slide{min-height:0;break-after:page;padding:55px 30px;display:block}.slide:last-child{break-after:auto}.slide.dark,.cover{background:white!important;color:#242721!important}.dark .mid,.dark .sub,.dark .card p,.dark .card li,.dark .bio-text,.dark .scenario-detail,.dark .watermark,.dark .slide-num{color:#555!important}.dark .pattern-num,.dark .takeaway-num,.dark .flow-step{color:#244bd8}.deck-home,.nav-dots,.deck-controls{display:none!important}h1{font-size:44px}h2{font-size:30px}.grid-2,.grid-3,.two-col{grid-template-columns:1fr 1fr}.takeaway-grid{grid-template-columns:repeat(5,1fr)}.watermark{top:15px;left:30px}.slide-num{bottom:10px;right:30px}.card,.scenario,.takeaway,.contrast-block{break-inside:avoid}.disclosure{color:#555}.bio-links a{color:#244bd8!important}}