:root{
  color-scheme:light;
  --paper:hsl(41 30% 95%);
  --surface:hsl(42 43% 98%);
  --sand:hsl(39 30% 91%);
  --blush:hsl(12 30% 93%);
  --ink:hsl(26 17% 15%);
  --body:hsl(26 13% 28%);
  --muted:hsl(25 10% 36%);
  --line:hsl(27 15% 73%);
  --rust:hsl(8 39% 39%);
  --rust-dark:hsl(8 43% 29%);
  --olive:hsl(123 13% 31%);
  --gold:hsl(38 56% 46%);
  --dark:hsl(29 15% 10%);
  --radius:8px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:auto}
body{margin:0;background:var(--paper);color:var(--body);font:400 18px/1.7 -apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit}
button{font:inherit}
h1,h2,h3,p,figure,blockquote{margin-top:0}
h1,h2{font-family:"Songti TC","Noto Serif TC","Source Han Serif TC",serif;font-weight:700;letter-spacing:.01em;color:var(--ink)}
h2{font-size:clamp(36px,4.2vw,60px);line-height:1.24;margin-bottom:32px}
h2 em{font-style:normal;color:var(--rust)}
h3{font-size:24px;line-height:1.4;color:var(--ink);font-weight:700}
p{margin-bottom:24px}
ol,ul{padding-left:0}
.wrap{width:min(100% - 48px,1140px);margin-inline:auto}
.wrap.narrow{max-width:880px}
.skip-link{position:fixed;z-index:100;top:-96px;left:16px;background:var(--ink);color:#fff;padding:8px 16px}
.skip-link:focus{top:16px}
:focus-visible{outline:3px solid var(--gold);outline-offset:4px}
.read-progress{position:fixed;inset:0 0 auto;height:4px;z-index:80;pointer-events:none}
.read-progress span{display:block;width:0;height:100%;background:var(--rust);transition:width .15s linear}

.site-header{height:72px;position:sticky;top:0;z-index:50;background:hsl(42 43% 98% / .95);border-bottom:1px solid var(--line);backdrop-filter:blur(16px);display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 32px}
.wordmark{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:14px;letter-spacing:.12em;line-height:1.1;font-weight:700;white-space:nowrap}
.wordmark small{display:block;margin-top:4px;color:var(--rust);font-size:12px;letter-spacing:.18em}
.wordmark-mark{display:grid;place-items:center;width:32px;height:32px;background:var(--rust);color:#fff;font:700 24px/1 Georgia,serif}
.chapter-nav{display:flex;align-items:center;gap:24px;overflow:auto;scrollbar-width:none}
.chapter-nav::-webkit-scrollbar{display:none}
.chapter-nav a{text-decoration:none;white-space:nowrap;color:var(--muted);font-size:14px;font-weight:600;letter-spacing:.04em;padding:8px 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.chapter-nav a:hover,.chapter-nav a.active{color:var(--rust-dark);border-color:var(--rust)}
.header-cta{font-size:14px;font-weight:700;text-decoration:none;color:var(--rust-dark);white-space:nowrap}
.header-cta span{font-size:18px;margin-left:4px}

.eyebrow{font-size:14px;line-height:1.4;font-weight:700;letter-spacing:.12em;color:var(--rust);text-transform:uppercase;margin-bottom:24px}
.eyebrow.light{color:hsl(37 65% 70%)}
.lead{font-size:24px;line-height:1.55;font-weight:500;color:var(--ink);max-width:35em}
.lead.accent{color:var(--rust-dark);font-weight:700}
.panel{padding:96px 0;min-height:560px;scroll-margin-top:72px;background:var(--paper);border-bottom:1px solid hsl(27 15% 73% / .45)}
.panel .wrap>h2{max-width:20em}
.sand-panel{background:var(--sand)}
.blush-panel{background:var(--blush)}
.end-note{margin-top:48px;margin-bottom:0;padding-top:24px;border-top:1px solid var(--line);color:var(--rust-dark);font-size:18px;font-weight:700;max-width:50em}
.fine-print{font-size:14px;color:var(--muted);margin-top:16px;margin-bottom:0}
.two-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:64px}
.three-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:48px}
.three-columns article{border-top:2px solid var(--rust);padding:24px 16px 16px 0}
.three-columns article span{font:700 14px/1.4 ui-monospace,Menlo,monospace;color:var(--rust)}
.three-columns h3{margin:16px 0}
.three-columns p{margin:0;font-size:18px;line-height:1.65}

.hero{min-height:calc(100svh - 72px);min-height:max(660px,calc(100svh - 72px));position:relative;overflow:hidden;color:#fff;background:var(--dark);display:flex;align-items:center}
.hero-photo,.hero-shade{position:absolute;inset:0;width:100%;height:100%}
.hero-photo{object-fit:cover;object-position:center 55%}
.hero-shade{background:linear-gradient(90deg,hsl(29 15% 8% / .96) 0%,hsl(29 15% 8% / .85) 36%,hsl(29 15% 8% / .28) 72%,hsl(29 15% 8% / .1) 100%)}
.hero-content{position:relative;z-index:1;padding-block:96px 128px}
.hero .eyebrow span{display:inline-block;margin-left:16px;color:hsl(37 45% 84%)}
.hero h1{font-size:clamp(60px,8vw,128px);line-height:1.07;color:#fff;margin:0 0 24px;max-width:7em;text-shadow:0 2px 22px hsl(0 0% 0% / .18)}
.hero-subtitle{font-size:clamp(24px,2.8vw,36px);line-height:1.4;font-weight:700;color:hsl(38 47% 90%);margin-bottom:48px}
.hero-statement{font-size:20px;line-height:1.6;max-width:24em;border-left:4px solid hsl(39 66% 66%);padding-left:24px;color:#fff;margin-bottom:64px}
.hero-byline{font-size:14px;letter-spacing:.04em;color:hsl(41 30% 88%);margin:0}
.hero-byline span{margin:0 8px;color:hsl(37 65% 70%)}
.scroll-cue{position:absolute;z-index:2;bottom:32px;right:max(24px,calc((100vw - 1140px)/2));font-size:14px;letter-spacing:.08em;color:#fff;text-decoration:none}
.scroll-cue span{font-size:24px;margin-left:8px}

.speaker-panel{background:var(--surface)}
.speaker-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:96px;align-items:start}
.speaker-grid h2{font-size:clamp(48px,5vw,72px);margin-bottom:16px}
.small-latin{display:block;font-family:Georgia,serif;font-size:24px;font-weight:400;color:var(--muted);margin-top:8px;letter-spacing:.05em}
.speaker-grid p:not(.eyebrow){max-width:34em}
.portrait-frame{margin:0}
.portrait-frame img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;object-position:left center;border-radius:var(--radius)}
.portrait-frame figcaption{font-size:14px;color:var(--muted);margin-top:12px;text-align:right}
.career-list{list-style:none;margin:32px 0 0;border-top:1px solid var(--line)}
.career-list li{display:flex;align-items:baseline;gap:24px;padding:12px 0;border-bottom:1px solid var(--line);font-size:16px}
.career-list span{font:700 14px/1.5 ui-monospace,Menlo,monospace;color:var(--rust)}
.award-strip{margin-top:64px;padding:32px 0;border-top:1px solid var(--line)}
.award-strip .eyebrow{margin-bottom:12px}
.award-strip p:last-child{font-size:16px;line-height:1.8;margin:0;max-width:68em;color:var(--body)}
.award-strip p span{color:var(--rust);padding:0 8px}
.works-panel{background:var(--paper)}
.works-panel h2{max-width:16em}
.divided{border-top:1px solid var(--line);padding-top:48px}
.divided>div+div{border-left:1px solid var(--line);padding-left:64px}
.divided h3{font-size:18px;color:var(--rust);margin-bottom:24px}
.work-list{list-style:none;margin:0}
.work-list li{display:flex;justify-content:space-between;align-items:baseline;gap:24px;padding:12px 0;border-bottom:1px solid var(--line);font-size:18px;color:var(--ink)}
.work-list li span{font-size:14px;color:var(--muted);white-space:nowrap}

.question-panel{background:var(--sand)}
.question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:48px}
.question-grid article{background:var(--surface);padding:32px;border-left:4px solid var(--rust);min-height:176px}
.question-grid article:nth-child(even){border-color:var(--olive)}
.question-grid span{font:700 14px/1 ui-monospace,Menlo,monospace;color:var(--rust)}
.question-grid h3{margin:12px 0 8px}
.question-grid p{margin:0}
.poll-panel{background:var(--surface)}
.line-list{list-style:none;margin:48px 0;padding:0}
.line-list li{display:flex;align-items:baseline;gap:32px;padding:20px 0;border-top:1px solid var(--line);font-size:24px;color:var(--ink);font-weight:600}
.line-list li:last-child{border-bottom:1px solid var(--line)}
.line-list span{color:var(--rust);font:700 18px/1 ui-monospace,Menlo,monospace}
blockquote{font-family:"Songti TC","Noto Serif TC",serif;font-size:30px;line-height:1.5;color:var(--rust-dark);max-width:28em;margin:48px 0 0;padding-left:24px;border-left:4px solid var(--rust)}

.chapter-panel{min-height:560px;padding:96px 0;display:flex;align-items:center;background:var(--rust-dark);color:#fff;scroll-margin-top:72px}
.chapter-olive{background:var(--olive)}
.chapter-dark{background:var(--dark)}
.chapter-rust{background:var(--rust)}
.chapter-inner{display:grid;grid-template-columns:200px minmax(0,1fr);align-items:start;gap:48px}
.chapter-number{font:700 clamp(96px,11vw,192px)/.8 Georgia,serif;color:hsl(38 55% 82% / .55)}
.chapter-panel h2{color:#fff;font-size:clamp(48px,5.5vw,72px);max-width:15em;margin-bottom:32px}
.chapter-panel p:last-child{font-size:20px;color:hsl(41 40% 91%);margin-bottom:0}

.role-grid,.signal-grid,.number-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:48px}
.role-grid article,.signal-grid article,.number-grid article{padding:32px;background:var(--surface);border:1px solid hsl(27 15% 73% / .6);border-radius:var(--radius)}
.role-grid article:nth-child(even),.number-grid article:nth-child(even){background:hsl(39 30% 91% / .55)}
.role-grid span,.number-grid span{font:700 14px/1.4 ui-monospace,Menlo,monospace;color:var(--rust);letter-spacing:.08em}
.role-grid h3,.signal-grid h3,.number-grid h3{margin:16px 0 8px}
.role-grid p,.signal-grid p,.number-grid p{margin:0}
.four-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:48px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.four-steps article{padding:32px 24px 32px 0}
.four-steps article+article{border-left:1px solid var(--line);padding-left:24px}
.four-steps b{display:block;color:var(--rust);font:700 48px/1 "Songti TC",serif;margin-bottom:24px}
.four-steps p{margin:0;font-size:16px;line-height:1.6}
.stage-list{list-style:none;margin:48px 0 0}
.stage-list li{display:grid;grid-template-columns:64px minmax(0,1fr) minmax(200px,.6fr);gap:24px;align-items:center;padding:24px 0;border-top:1px solid var(--line)}
.stage-list li:last-child{border-bottom:1px solid var(--line)}
.stage-list b{font:700 24px/1 ui-monospace,Menlo,monospace;color:var(--rust)}
.stage-list h3{margin:0 0 4px}
.stage-list p{margin:0;color:var(--muted);font-size:16px}
.stage-list strong{color:var(--olive);font-size:18px}
.level-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:48px}
.level-grid article{min-height:280px;padding:24px;background:var(--surface);border-top:8px solid var(--olive);display:flex;flex-direction:column}
.level-grid article.level-amber{border-color:var(--gold)}
.level-grid article.level-red{border-color:var(--rust)}
.level-grid span{font:700 12px/1.4 ui-monospace,Menlo,monospace;letter-spacing:.08em;color:var(--muted)}
.level-grid h3{font:700 72px/1 "Songti TC",serif;color:var(--olive);margin:24px 0 16px}
.level-amber h3{color:var(--gold)}
.level-red h3{color:var(--rust)}
.level-grid p{font-size:16px;margin:0 0 24px}
.level-grid strong{display:block;margin-top:auto;padding-top:24px;border-top:1px solid var(--line);color:var(--ink);font-size:16px;line-height:1.5}

.example-stack{margin-top:48px}
.example-stack article{display:grid;grid-template-columns:minmax(180px,.5fr) minmax(0,1fr);gap:32px;align-items:baseline;border-top:1px solid var(--line);padding:24px 0}
.example-stack article:last-child{border-bottom:1px solid var(--line)}
.example-stack h3,.example-stack p{margin:0}
.scenario-panel{background:var(--dark);color:#fff}
.scenario-panel h2{color:#fff}
.scenario-panel .lead{color:hsl(42 47% 86%)}
.scenario-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(280px,.8fr);gap:64px;align-items:center}
.scenario-facts{counter-reset:facts;list-style:none;margin:0;padding:0;border-top:1px solid hsl(41 24% 68% / .4)}
.scenario-facts li{counter-increment:facts;padding:24px 0;border-bottom:1px solid hsl(41 24% 68% / .4);font-size:18px}
.scenario-facts li::before{content:"0" counter(facts);display:inline-block;width:48px;font:700 16px/1 ui-monospace,Menlo,monospace;color:hsl(37 65% 70%)}
.needs-columns{margin-top:48px}
.needs-columns>div{border-top:3px solid var(--rust);padding-top:24px}
.needs-columns>div+div{border-color:var(--olive)}
.needs-columns h3{margin-bottom:24px}
.needs-columns ol{list-style:none;counter-reset:needs;margin:0}
.needs-columns li{counter-increment:needs;display:flex;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:18px}
.needs-columns li::before{content:"0" counter(needs);font:700 14px/1.8 ui-monospace,Menlo,monospace;color:var(--rust)}
.comparison{margin-top:48px;gap:16px}
.comparison article{padding:32px;min-height:320px}
.bad-reply{background:hsl(2 48% 92%);border-left:4px solid var(--rust)}
.good-reply{background:hsl(125 19% 88%);border-left:4px solid var(--olive)}
.comparison h3{font-size:18px;margin-bottom:24px}
.comparison p{font-size:20px;line-height:1.7;color:var(--ink);margin:0}
.good-reply p{font-size:18px}
.letter-steps b{font-size:30px}
.platform-list{margin-top:48px}
.platform-list article{display:grid;grid-template-columns:minmax(220px,.6fr) minmax(0,1fr);gap:24px;padding:24px 0;border-top:1px solid var(--line);align-items:baseline}
.platform-list article:last-child{border-bottom:1px solid var(--line)}
.platform-list h3,.platform-list p{margin:0}
.risk-list{max-width:800px}
.decision-grid article{background:hsl(42 43% 98% / .08);border-color:hsl(41 24% 68% / .35)}
.decision-grid article:nth-child(even){background:hsl(42 43% 98% / .12)}
.decision-grid span{color:hsl(37 65% 70%);font-size:20px}
.decision-grid h3{color:#fff;font-size:20px}
.scenario-panel .end-note{border-color:hsl(41 24% 68% / .4);color:hsl(42 47% 86%)}
.time-list{list-style:none;margin:48px 0 0;border-top:1px solid var(--line)}
.time-list li{display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.time-list time{font-size:20px;color:var(--rust);font-weight:700}
.time-list p{margin:0;font-size:18px}
.service-flow{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:48px 0 0}
.service-flow li{padding:24px;background:var(--surface);border-top:3px solid var(--olive)}
.service-flow span{font:700 14px/1.4 ui-monospace,Menlo,monospace;color:var(--rust)}
.service-flow b{display:block;font-size:20px;color:var(--ink);margin:16px 0 8px}
.service-flow p{margin:0;font-size:16px}

.final-panel{background:var(--dark);color:#fff;padding:96px 0 32px;scroll-margin-top:72px}
.final-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(280px,.75fr);gap:96px;align-items:center}
.final-panel h2{font-size:clamp(48px,5vw,72px);color:#fff;margin-bottom:48px}
.final-works{list-style:none;margin:0 0 48px;max-width:560px}
.final-works li{display:flex;justify-content:space-between;gap:24px;align-items:baseline;padding:16px 0;border-top:1px solid hsl(41 24% 68% / .35);font-size:18px}
.final-works li:last-child{border-bottom:1px solid hsl(41 24% 68% / .35)}
.final-works span{font-size:14px;color:hsl(41 30% 80%);white-space:nowrap}
.text-link{color:hsl(37 65% 70%);font-size:20px;font-weight:700;text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:4px}
.text-link span{margin-left:8px}
.qr-area{text-align:center}
.qr-frame{display:block;width:min(100%,320px);padding:16px;margin:0 auto 24px;background:#fff;border-radius:var(--radius)}
.qr-frame img{width:100%;height:auto;aspect-ratio:1}
.qr-area p{font-size:24px;font-weight:700;color:#fff;margin-bottom:4px}
.qr-area p a{text-decoration:none}
.qr-area p a:hover{text-decoration:underline;text-underline-offset:4px}
.qr-area>span{font-size:14px;color:hsl(41 30% 80%)}
.site-footer{display:flex;justify-content:space-between;gap:24px;border-top:1px solid hsl(41 24% 68% / .35);margin-top:96px;padding-top:24px;font-size:14px;color:hsl(41 30% 80%)}
.site-footer a{text-decoration:none;color:hsl(37 65% 70%)}

@media(max-width:1050px){
  .site-header{padding:0 16px;gap:16px}
  .chapter-nav{gap:16px}
  .chapter-nav a{font-size:12px}
  .speaker-grid{gap:48px}
  .chapter-inner{grid-template-columns:140px minmax(0,1fr)}
  .final-grid{gap:48px}
}
@media(max-width:760px){
  body{font-size:16px;line-height:1.65}
  .wrap{width:min(100% - 32px,1140px)}
  .site-header{height:60px;gap:8px}
  .wordmark{font-size:12px;gap:8px}
  .wordmark small{font-size:10px}
  .wordmark-mark{width:28px;height:28px;font-size:20px}
  .chapter-nav{position:absolute;top:60px;left:0;right:0;background:var(--surface);padding:0 16px;border-bottom:1px solid var(--line);gap:24px}
  .chapter-nav a{font-size:14px;padding:8px 0}
  .header-cta{font-size:12px;margin-left:auto}
  .panel,.chapter-panel{scroll-margin-top:102px}
  .panel{padding:64px 0;min-height:0}
  h2{font-size:30px;line-height:1.35;margin-bottom:24px}
  h3{font-size:20px}
  .eyebrow{font-size:12px;margin-bottom:16px}
  .lead{font-size:20px}
  .end-note{font-size:16px;margin-top:32px;padding-top:16px}
  .hero{min-height:calc(100svh - 102px);margin-top:42px;align-items:flex-end}
  .hero-photo{object-position:68% center}
  .hero-shade{background:linear-gradient(0deg,hsl(29 15% 8% / .95),hsl(29 15% 8% / .65) 60%,hsl(29 15% 8% / .12))}
  .hero-content{padding-block:96px 96px}
  .hero h1{font-size:clamp(48px,12vw,72px)}
  .hero-subtitle{font-size:24px;margin-bottom:32px}
  .hero-statement{font-size:16px;margin-bottom:48px;padding-left:16px}
  .hero-byline{font-size:12px;line-height:1.6}
  .scroll-cue{bottom:16px;right:16px;font-size:12px}
  .speaker-grid,.two-columns,.scenario-grid,.final-grid{grid-template-columns:1fr;gap:32px}
  .speaker-grid h2{font-size:48px}
  .final-panel h2{font-size:36px}
  .portrait-frame{max-width:420px}
  .portrait-frame img{aspect-ratio:1;object-position:left center}
  .award-strip{margin-top:48px;padding:24px 0}
  .award-strip p:last-child{font-size:14px}
  .divided{padding-top:24px}
  .divided>div+div{border:0;padding-left:0}
  .work-list li{font-size:16px}
  .question-grid,.role-grid,.signal-grid,.number-grid,.level-grid,.service-flow{grid-template-columns:1fr}
  .question-grid{margin-top:32px}
  .question-grid article{min-height:0;padding:24px}
  .line-list{margin:32px 0}
  .line-list li{font-size:18px;gap:16px;padding:16px 0}
  blockquote{font-size:24px;margin-top:32px;padding-left:16px}
  .chapter-panel{min-height:440px;padding:64px 0}
  .chapter-inner{grid-template-columns:1fr;gap:24px}
  .chapter-number{font-size:96px}
  .chapter-panel h2{font-size:36px}
  .chapter-panel p:last-child{font-size:18px}
  .four-steps{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:32px}
  .four-steps article{padding:24px 16px 24px 0}
  .four-steps article:nth-child(3){border-left:0;border-top:1px solid var(--line)}
  .four-steps article:nth-child(4){border-top:1px solid var(--line)}
  .four-steps b{font-size:36px;margin-bottom:16px}
  .four-steps p{font-size:14px}
  .stage-list{margin-top:32px}
  .stage-list li{grid-template-columns:40px minmax(0,1fr);gap:16px;padding:16px 0}
  .stage-list strong{grid-column:2;font-size:16px}
  .stage-list h3{font-size:18px}
  .level-grid{margin-top:32px}
  .level-grid article{min-height:0}
  .level-grid h3{font-size:48px;margin:16px 0}
  .example-stack{margin-top:32px}
  .example-stack article,.platform-list article{grid-template-columns:1fr;gap:8px;padding:16px 0}
  .needs-columns{margin-top:32px}
  .three-columns{grid-template-columns:1fr;gap:8px;margin-top:32px}
  .three-columns article{padding:16px 0}
  .comparison{margin-top:32px}
  .comparison article{min-height:0;padding:24px}
  .comparison p,.good-reply p{font-size:16px}
  .time-list{margin-top:32px}
  .time-list li{grid-template-columns:100px minmax(0,1fr);gap:16px}
  .time-list time,.time-list p{font-size:16px}
  .service-flow{margin-top:32px}
  .final-panel{padding-top:64px}
  .final-works li{font-size:16px}
  .qr-area{justify-self:start;text-align:left}
  .qr-frame{margin-left:0}
  .site-footer{margin-top:64px}
}
@media(max-width:390px){
  .header-cta{font-size:0}
  .header-cta span{font-size:18px}
  .hero h1{font-size:48px}
  .chapter-panel h2{font-size:36px}
  .final-works li{display:block}
  .final-works span{display:block;margin-top:4px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .read-progress span{transition:none}
}

/* Presentation shell: the speech-site page-by-page reading model. */
html,body{height:100%;overflow:hidden}
body{height:100dvh;display:flex;flex-direction:column}
.site-header{position:relative;flex:0 0 60px;justify-content:space-between}
.event-name{display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.3;text-align:center;color:var(--ink)}
.event-name strong{font-size:16px;font-weight:700}
.event-name span{font-size:12px;color:var(--muted);letter-spacing:.04em}
.header-actions{display:flex;gap:8px;align-items:center}
.header-actions button{border:1px solid var(--line);background:transparent;color:var(--ink);border-radius:var(--radius);padding:8px 12px;font-size:14px;font-weight:700;white-space:nowrap;cursor:pointer}
.header-actions button:hover{border-color:var(--rust);color:var(--rust-dark)}
.slide-stage{position:relative;flex:1;min-height:0;width:100%;overflow:hidden;background:var(--dark)}
.slide-stage main{display:flex;width:max-content;height:100%;will-change:transform;transition:transform .34s cubic-bezier(.22,.61,.36,1)}
.slide-stage main>section{flex:0 0 100vw;width:100vw;height:100%;min-height:0;max-height:100%;overflow-x:hidden;overflow-y:auto;overscroll-behavior-y:contain;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.slide-stage .panel{padding:48px 0;scroll-margin-top:0}
.slide-stage [data-page="14"]{display:flex;flex-direction:column}
.slide-stage [data-page="14"]>.wrap{margin-block:auto}
.slide-stage .hero{margin:0;padding:0;min-height:0;align-items:center}
.slide-stage .hero-content{padding-block:48px 64px}
.slide-stage .hero h1{font-size:clamp(60px,7vw,104px)}
.slide-stage .hero-subtitle{margin-bottom:24px}
.slide-stage .hero-statement{margin-bottom:32px}
.slide-stage .chapter-panel{padding:48px 0;min-height:0;scroll-margin-top:0}
.slide-stage .final-panel{padding:48px 0 24px;scroll-margin-top:0}
.slide-stage h2{font-size:clamp(32px,3.5vw,48px);margin-bottom:24px}
.slide-stage h3{font-size:20px}
.slide-stage .eyebrow{margin-bottom:16px}
.slide-stage .lead{font-size:20px}
.slide-stage .end-note{margin-top:24px;padding-top:16px;font-size:16px}
.slide-stage .two-columns{gap:40px}
.slide-stage .three-columns,.slide-stage .role-grid,.slide-stage .signal-grid,.slide-stage .number-grid,.slide-stage .question-grid,.slide-stage .level-grid,.slide-stage .service-flow{margin-top:24px}
.slide-stage .role-grid article,.slide-stage .signal-grid article,.slide-stage .number-grid article,.slide-stage .question-grid article{padding:20px}
.slide-stage .four-steps,.slide-stage .stage-list,.slide-stage .line-list,.slide-stage .time-list,.slide-stage .example-stack,.slide-stage .platform-list{margin-top:24px}
.slide-stage .four-steps article{padding-top:20px;padding-bottom:20px}
.slide-stage .four-steps b{margin-bottom:12px}
.slide-stage .speaker-grid{gap:48px}
.slide-stage .speaker-grid h2{font-size:48px}
.slide-stage .portrait-frame img{max-height:350px;object-fit:cover}
.slide-stage .award-strip{margin-top:24px;padding:16px 0}
.slide-stage .divided{padding-top:24px}
.slide-stage .divided>div+div{padding-left:40px}
.slide-stage .work-list li{padding:8px 0}
.slide-stage .chapter-panel h2{font-size:clamp(48px,5.5vw,72px)}
.slide-stage .chapter-number{font-size:clamp(96px,11vw,160px)}
.slide-stage .scenario-facts li{padding:16px 0}
.slide-stage .level-grid article{min-height:240px}
.slide-stage .level-grid h3{font-size:56px;margin:16px 0}
.slide-stage .prsos-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:24px}
.slide-stage .prsos-row article{min-width:0;padding:20px;background:var(--surface);border-top:3px solid var(--rust)}
.slide-stage .prsos-row b{display:block;font:700 30px/1 Georgia,serif;color:var(--rust);margin-bottom:16px}
.slide-stage .prsos-row h3{font-size:18px;margin-bottom:8px}
.slide-stage .prsos-row p{font-size:15px;line-height:1.5;margin:0}
.slide-stage .comparison article{min-height:0;padding:24px}
.slide-stage .comparison p{font-size:18px}
.slide-stage .good-reply p{font-size:16px}
.slide-stage .site-footer{margin-top:32px}
.slide-controls{display:flex;align-items:center;justify-content:center;gap:6px;color:var(--ink)}
.header-actions .slide-arrow{display:grid;place-items:center;width:32px;height:32px;padding:0;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--ink);font-size:18px;line-height:1;cursor:pointer}
.slide-arrow:hover:not(:disabled){border-color:var(--rust);background:var(--blush);color:var(--rust-dark)}
.slide-arrow:disabled{opacity:.35;cursor:default}
.slide-count{position:relative;display:flex;align-items:baseline;justify-content:center;gap:4px;min-width:64px;padding-bottom:0;font:600 12px/1.2 ui-monospace,Menlo,monospace}
.slide-count strong{font-size:14px;color:var(--rust-dark)}
.slide-count>span{color:var(--muted)}
.slide-rail{display:none;position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--sand)}
.slide-rail span{display:block;height:100%;width:0;background:var(--rust);transition:width .2s}
.overview[hidden]{display:none}
.overview{position:fixed;z-index:90;inset:0;background:hsl(29 15% 10% / .95);color:#fff;display:flex;flex-direction:column;padding:32px}
.overview-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:24px;border-bottom:1px solid hsl(41 24% 68% / .35)}
.overview-head strong{font-size:24px}
.overview-head button{border:1px solid hsl(41 24% 68% / .55);border-radius:var(--radius);background:transparent;color:#fff;padding:8px 16px;cursor:pointer}
.overview-list{min-height:0;overflow:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;align-content:start;padding-top:24px}
.overview-list button{display:flex;align-items:baseline;gap:16px;min-height:80px;text-align:left;border:1px solid hsl(41 24% 68% / .35);border-radius:var(--radius);background:hsl(42 43% 98% / .06);color:#fff;padding:16px;cursor:pointer}
.overview-list button:hover,.overview-list button.active{border-color:hsl(37 65% 70%);background:hsl(42 43% 98% / .14)}
.overview-list button span{font:700 14px/1 ui-monospace,Menlo,monospace;color:hsl(37 65% 70%)}
.overview-list button strong{font-size:16px;line-height:1.45}
@media(max-width:760px){
  .site-header{height:auto;flex-basis:52px;padding:0 12px}
  .event-name{align-items:flex-start;text-align:left;min-width:0}
  .event-name strong{font-size:14px}
  .event-name span{display:none}
  .wordmark{display:none}
  .header-actions{gap:4px}
  .header-actions button{font-size:12px;padding:6px}
  .header-actions .slide-arrow{width:32px;height:32px;font-size:16px;padding:0}
  .slide-controls{gap:2px}
  .slide-count{min-width:52px;font-size:12px;gap:2px}
  .slide-count strong{font-size:12px}
  #fullscreen-toggle{display:none}
  .slide-stage .panel{padding:32px 0}
  .slide-stage .hero{min-height:0;margin:0;align-items:flex-end}
  .slide-stage .hero-content{padding-block:48px 72px}
  .slide-stage .hero h1{font-size:clamp(48px,12vw,72px)}
  .slide-stage h2{font-size:30px}
  .slide-stage .speaker-grid h2{font-size:42px}
  .slide-stage .speaker-grid,.slide-stage .two-columns,.slide-stage .scenario-grid,.slide-stage .final-grid{gap:24px}
  .slide-stage .portrait-frame img{max-height:260px;max-width:260px}
  .slide-stage .award-strip{margin-top:24px}
  .slide-stage .chapter-panel{min-height:0;padding:32px 0}
  .slide-stage .chapter-panel h2{font-size:36px}
  .slide-stage .chapter-number{font-size:80px}
  .slide-stage .level-grid article{min-height:0;padding:16px}
  .slide-stage .level-grid h3{font-size:40px;margin:8px 0}
  .slide-stage .level-grid strong{padding-top:12px}
  .slide-stage .service-flow li{padding:12px}
  .slide-stage .service-flow b{font-size:18px;margin:8px 0 4px}
  .slide-stage .service-flow p{font-size:14px;line-height:1.45}
  .slide-stage .final-panel{padding:24px 0}
  .slide-stage .final-grid{gap:12px}
  .slide-stage .final-panel h2{font-size:30px;margin-bottom:16px}
  .slide-stage .final-works{margin-bottom:16px}
  .slide-stage .final-works li{padding:8px 0}
  .slide-stage .text-link{font-size:16px}
  .slide-stage .qr-frame{width:160px;margin-bottom:8px}
  .slide-stage .qr-area p{font-size:18px}
  .slide-stage .site-footer{margin-top:16px}
  .slide-stage .prsos-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .slide-stage .prsos-row article{padding:16px}
  .slide-stage .prsos-row h3{font-size:16px}
  .slide-stage .prsos-row p{font-size:14px}
  .slide-stage [data-page="17"]{padding:24px 0}
  .slide-stage [data-page="22"]{padding:16px 0}
  .slide-stage [data-page="22"] h2{margin-bottom:16px}
  .slide-stage [data-page="22"] .comparison{margin-top:16px;gap:12px}
  .slide-stage [data-page="22"] .comparison article{padding:16px}
  .slide-stage [data-page="22"] .comparison h3{margin-bottom:12px}
  .slide-stage [data-page="22"] .end-note{margin-top:16px}
  .slide-stage [data-page="32"]{padding:16px 0}
  .slide-stage [data-page="32"] h2{font-size:24px}
  .slide-stage [data-page="32"] .service-flow{gap:8px;margin-top:16px}
  .slide-stage [data-page="32"] .service-flow li{padding:8px}
  .slide-stage [data-page="32"] .end-note{margin-top:16px;padding-top:8px}
  .overview{padding:16px}
  .overview-list{grid-template-columns:1fr 1fr;gap:8px}
  .overview-list button{min-height:64px;padding:12px;gap:8px}
  .overview-list button strong{font-size:14px}
}
@media(min-width:390px) and (max-width:760px){
  .slide-stage .question-grid,.slide-stage .role-grid,.slide-stage .signal-grid,.slide-stage .number-grid,.slide-stage .service-flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .slide-stage .question-grid article,.slide-stage .role-grid article,.slide-stage .signal-grid article,.slide-stage .number-grid article{padding:16px}
  .slide-stage .question-grid h3,.slide-stage .role-grid h3,.slide-stage .signal-grid h3,.slide-stage .number-grid h3{font-size:18px}
  .slide-stage .question-grid p,.slide-stage .role-grid p,.slide-stage .signal-grid p,.slide-stage .number-grid p{font-size:14px;line-height:1.5}
}
@media(min-width:480px) and (max-width:760px){
  .slide-stage .level-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .slide-stage .level-grid article{padding:12px}
  .slide-stage .level-grid span{font-size:12px}
  .slide-stage .level-grid h3{font-size:36px}
  .slide-stage .level-grid p,.slide-stage .level-grid strong{font-size:14px;line-height:1.45}
  .slide-stage [data-page="17"] .three-columns{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .slide-stage [data-page="17"] .three-columns article{padding:12px 4px 8px 0}
  .slide-stage [data-page="17"] .three-columns h3{font-size:16px;margin:8px 0}
  .slide-stage [data-page="17"] .three-columns p{font-size:14px;line-height:1.5}
}
@media(max-width:390px){
  .event-name strong{font-size:12px;max-width:100%;line-height:1.2}
  .event-name span{display:none}
  .header-actions #overview-open{font-size:10px;padding:4px}
  .header-actions .slide-arrow{width:32px;height:32px;font-size:14px}
  .slide-count{min-width:48px;font-size:12px}
  .slide-count strong{font-size:12px}
  .overview-list{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  .slide-stage main,.slide-rail span{transition:none}
}

/* Keep the existing slide layout readable on short displays and small phones. */
.slide-scroll-more[hidden]{display:none}
.slide-scroll-more{position:absolute;right:16px;bottom:12px;z-index:10;min-height:36px;padding:8px 12px;border:1px solid var(--line);border-radius:20px;background:var(--paper);color:var(--ink);font-family:inherit;font-size:12px;font-weight:600;line-height:1.3;box-shadow:0 2px 12px #0002;cursor:pointer}
.slide-scroll-more span{margin-left:6px}
@media(min-width:761px) and (max-height:800px){
  .slide-stage [data-page="04"],.slide-stage [data-page="16"],.slide-stage [data-page="28"],.slide-stage [data-page="32"],.slide-stage [data-page="34"]{padding-block:28px}
  .slide-stage [data-page="04"] .question-grid article{min-height:160px}
  .slide-stage [data-page="16"] .number-grid article{padding:16px}
  .slide-stage [data-page="16"] .number-grid h3{margin-top:12px}
  .slide-stage [data-page="16"] h2,.slide-stage [data-page="32"] h2{margin-bottom:16px}
  .slide-stage [data-page="16"] .end-note{margin-top:16px}
  .slide-stage [data-page="32"] .service-flow{margin-top:16px}
  .slide-stage [data-page="32"] .service-flow li{padding:16px}
}
@media(max-width:760px){
  .site-header{gap:8px}
  .event-name{flex:1}
  .event-name strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
  .header-actions{flex-shrink:0}
  .header-actions .slide-arrow{width:40px;height:40px}
  .header-actions #overview-open{min-height:40px}
}
@media(max-width:479px){
  .slide-stage [data-page="17"] .lead{font-size:18px}
  .slide-stage [data-page="17"] .three-columns{margin-top:16px;gap:4px}
  .slide-stage [data-page="17"] .three-columns article{padding:12px 0}
  .slide-stage [data-page="17"] .three-columns h3{margin:8px 0}
  .slide-stage [data-page="17"] .three-columns p{font-size:16px;line-height:1.6}
  .slide-stage [data-page="17"] .end-note{margin-top:16px;padding-top:12px}
}