:root{--navy:#101d2b;--navy-2:#172b3c;--ink:#172534;--muted:#586a78;--line:#d9e1e5;--paper:#f2f5f5;--white:#fff;--mint:#67d4d0;--teal:#087b83}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7}a{color:inherit}a:focus-visible{outline:3px solid var(--teal);outline-offset:4px}.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:#fff;padding:8px 12px}.skip-link:focus{top:12px}
.site-header{background:var(--navy);color:#e9f1f2;border-bottom:1px solid #304555}.header-inner{max-width:1500px;margin:auto;padding:13px clamp(20px,4vw,60px);display:flex;align-items:center;gap:clamp(22px,4vw,60px)}.brand{display:inline-flex;gap:12px;align-items:center;text-decoration:none;font-weight:720;letter-spacing:.03em}.brand-mark{display:grid;place-items:center;width:32px;height:32px;border:1px solid var(--mint);border-radius:5px;color:var(--mint);font:700 12px/1 Arial,sans-serif}.header-nav{display:flex;gap:27px;margin-left:auto}.header-nav a{text-decoration:none;color:#c4d2d8;font-size:14px}.header-nav a:hover{color:var(--mint)}.header-year{font-size:12px;color:#849eaa;letter-spacing:.15em}
.intro{background:var(--navy);color:#f2f7f8;overflow:hidden}.intro-inner{max-width:1500px;margin:auto;padding:clamp(48px,6vw,90px) clamp(20px,4vw,60px) clamp(50px,6vw,84px);display:grid;grid-template-columns:minmax(0,1.45fr) minmax(260px,.55fr);gap:clamp(36px,7vw,110px);align-items:end}.eyebrow{margin:0 0 22px;color:var(--mint);font-size:13px;font-weight:720;letter-spacing:.18em}.intro h1{margin:0;max-width:960px;font-family:Georgia,"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(43px,5.1vw,78px);line-height:1.22;letter-spacing:-.035em;font-weight:600}.intro h1 em{font-style:normal;color:var(--mint)}.intro-text{max-width:700px;margin:25px 0 0;color:#c5d4db;font-size:18px;line-height:1.88}.intro-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:31px}.intro-actions a{display:inline-flex;align-items:center;justify-content:space-between;gap:20px;min-width:185px;padding:10px 15px;border:1px solid #5b7580;border-radius:5px;text-decoration:none;font-size:14px;font-weight:650}.intro-actions a:first-child{background:var(--mint);border-color:var(--mint);color:var(--navy)}.intro-actions a:hover{transform:translateY(-2px)}.intro-index{border-top:1px solid #57707a}.intro-index>div{display:grid;gap:3px;padding:18px 0;border-bottom:1px solid #3a5360}.intro-index span{color:var(--mint);font:700 12px/1.5 Arial,sans-serif;letter-spacing:.12em}.intro-index strong{font-family:Georgia,"Songti SC",serif;font-size:21px;font-weight:600}.intro-index small{color:#9eb1bb;font-size:13px}
.reading-nav{position:sticky;top:0;z-index:30;background:rgba(248,250,250,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.reading-nav-inner{max-width:1500px;margin:auto;padding:0 clamp(20px,4vw,60px);min-height:55px;display:flex;gap:clamp(16px,3vw,36px);align-items:center}.reading-nav span{color:#7c8e98;font-size:12px;font-weight:700;letter-spacing:.12em;margin-right:auto}.reading-nav a{font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap;color:#485d6b}.reading-nav a:hover{color:var(--teal)}
.speaker-section{max-width:1500px;margin:auto;padding:0 clamp(20px,4vw,60px);scroll-margin-top:55px}.section-heading{display:grid;grid-template-columns:1fr minmax(260px,.65fr);gap:clamp(35px,7vw,110px);align-items:end;padding:clamp(65px,8vw,115px) 0 42px;border-bottom:1px solid #bfcbd0}.section-index{display:inline-block;margin-bottom:20px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.13em}.section-heading h2{margin:0;font-family:Georgia,"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(38px,4.5vw,64px);font-weight:600;line-height:1.25;letter-spacing:-.035em}.section-heading>p{max-width:430px;margin:0 0 5px;color:#4f6470;font-size:18px;line-height:1.85}.slides{display:grid;gap:clamp(28px,4vw,52px);padding:clamp(32px,4vw,55px) 0 0}.slide-card{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(300px,.82fr);background:var(--white);border:1px solid #d8e1e5;box-shadow:0 15px 42px rgba(16,38,50,.055);min-width:0;scroll-margin-top:78px}.slide-visual{display:flex;flex-direction:column;min-width:0;background:var(--navy-2);color:#c3d3d7;padding:15px 15px 12px}.slide-visual-top,.slide-visual-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:12px;letter-spacing:.06em}.slide-visual-top{padding:0 3px 12px}.slide-visual-top span:first-child{color:var(--mint);font-weight:800;letter-spacing:.13em}.slide-visual a{display:block;line-height:0;overflow:hidden;background:#071018}.slide-visual img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:contain}.slide-visual a:hover img{filter:brightness(1.07)}.slide-visual-bottom{padding:11px 3px 0}.slide-visual-bottom span:last-child{color:var(--mint)}.slide-copy{display:flex;flex-direction:column;justify-content:center;padding:clamp(30px,4vw,62px);min-width:0}.slide-count{font:750 22px/1 Arial,sans-serif;color:var(--teal);letter-spacing:.03em}.slide-count span{font-size:12px;color:#8b9da6;font-weight:650}.slide-copy h4{margin:21px 0 19px;font-family:Georgia,"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(27px,2.5vw,38px);line-height:1.3;font-weight:650;letter-spacing:-.025em}.slide-copy>p{margin:0;color:#354b58;font-size:17px;line-height:1.9}.thought{margin-top:30px;padding-top:19px;border-top:1px solid var(--line)}.thought span{display:block;margin-bottom:8px;color:var(--teal);font-size:12px;font-weight:800;letter-spacing:.1em}.thought p{margin:0;font-size:16px;line-height:1.85;color:#536978}.section-end{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:42px 0 74px;font-size:14px;color:#667b86}.section-end a{color:var(--teal);font-weight:750;text-decoration:none}.section-end a:hover{text-decoration:underline}.second{border-top:1px solid var(--line)}
.sources{background:#e5edee;border-top:1px solid #cedbdd}.sources-inner{max-width:1500px;margin:auto;padding:57px clamp(20px,4vw,60px) 70px;display:grid;grid-template-columns:minmax(220px,.55fr) minmax(0,1fr);gap:12px clamp(32px,6vw,100px)}.sources h2{grid-row:1/4;margin:0;font-family:Georgia,"Songti SC",serif;font-size:29px;line-height:1.4}.sources p{max-width:810px;margin:0;color:#48606c;font-size:16px;line-height:1.85}.source-links{display:flex;flex-wrap:wrap;gap:12px;margin:7px 0}.source-links a{padding:9px 14px;border:1px solid #a9bec5;text-decoration:none;background:#fff;border-radius:4px;font-size:14px;font-weight:650}.source-links a:hover{border-color:var(--teal);color:var(--teal)}.sources .source-small{font-size:14px;color:#69808a}footer{display:flex;justify-content:space-between;gap:20px;padding:22px clamp(20px,4vw,60px);background:var(--navy);color:#aec2cb;font-size:13px}footer a{text-decoration:none;color:var(--mint)}
@media(max-width:1050px){.intro-inner{grid-template-columns:1fr}.intro-index{display:grid;grid-template-columns:1fr 1fr;gap:25px}.section-heading{grid-template-columns:1fr}.section-heading>p{max-width:760px}.slide-card{grid-template-columns:1fr}.slide-visual{padding:14px}.slide-visual img{max-height:650px}.slide-copy{padding:32px clamp(24px,5vw,55px) 38px}.slide-copy h4{font-size:32px;margin:14px 0}.thought{margin-top:22px}}
@media(max-width:650px){.header-inner{gap:14px;padding:10px 18px}.brand{font-size:14px}.header-nav{gap:13px}.header-nav a{font-size:12px}.header-year{display:none}.intro-inner{padding:45px 20px 42px;gap:30px}.intro h1{font-size:clamp(35px,9vw,48px)}.intro-text{font-size:16px;margin-top:20px}.intro-index{grid-template-columns:1fr;gap:0}.intro-index>div{padding:12px 0}.intro-index strong{font-size:18px}.reading-nav-inner{padding:0 18px;gap:16px;overflow-x:auto}.reading-nav span{display:none}.speaker-section{padding:0 16px}.section-heading{padding:57px 4px 29px;gap:16px}.section-heading h2{font-size:clamp(35px,9vw,48px)}.section-heading>p{font-size:16px}.slides{gap:20px;padding-top:22px}.slide-visual{padding:8px}.slide-visual-top,.slide-visual-bottom{font-size:11px}.slide-visual-top{padding:4px 3px 8px}.slide-visual-bottom{padding:8px 3px 2px}.slide-copy{padding:25px 22px 29px}.slide-copy h4{font-size:28px}.slide-copy>p{font-size:16px}.thought p{font-size:15px}.section-end{padding:30px 4px 54px;align-items:start;flex-direction:column}.sources-inner{display:block;padding:48px 22px 58px}.sources h2{margin-bottom:18px}.sources p{margin:0 0 15px}.source-links{margin:19px 0}.sources .source-small{margin-bottom:0}footer{padding:20px 22px}}
.reading-tools{padding:24px 0 0}.reading-options{display:flex;align-items:center;justify-content:space-between;gap:24px}.reading-options p{margin:0;max-width:780px;color:var(--muted);font-size:14px}.reading-options button{display:none;flex:none;background:#fff;border:1px solid #94aeb5;color:var(--teal);border-radius:5px;padding:10px 15px;font-family:inherit;font-size:14px;font-weight:650;line-height:1.5;cursor:pointer}.js .reading-options button{display:block}.reading-options button:hover{background:#e2f3f2}button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:4px}.topic-nav{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.topic-nav a{padding:7px 12px;background:#e7eeef;border-radius:4px;text-decoration:none;color:#3f5b68;font-size:14px}.topic-nav a:hover{background:#d7e8e9;color:var(--teal)}.slides{gap:65px}.topic{display:grid;gap:24px;min-width:0;scroll-margin-top:78px}.topic-heading{display:flex;align-items:baseline;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding-bottom:12px}.topic-heading h3{font-size:23px;line-height:1.45;margin:0;font-weight:650}.topic-heading>a{flex:none;text-decoration:none;font-size:14px;color:var(--teal)}.speech-link{margin-top:23px;font-size:14px;color:var(--teal);text-underline-offset:5px}.transcript{background:#fff;border:1px solid #b8ced2;border-radius:5px;scroll-margin-top:78px}.transcript summary{display:flex;align-items:center;justify-content:space-between;gap:20px;cursor:pointer;padding:23px 28px;list-style:none;color:var(--ink);font-size:18px;font-weight:650}.transcript summary::-webkit-details-marker{display:none}.transcript summary small{display:block;font-size:14px;font-weight:400;color:var(--muted);margin-top:4px}.transcript summary:hover{background:#f2f8f8}.disclosure-icon{flex:none;font-size:27px;line-height:1;color:var(--teal)}.transcript[open] .disclosure-icon{transform:rotate(45deg)}.when-open{display:none}.transcript[open] .when-open{display:inline}.transcript[open] .when-closed{display:none}.transcript-body{padding:35px clamp(24px,7vw,100px) 40px;border-top:1px solid var(--line)}.transcript-body>*{max-width:850px;margin-left:auto;margin-right:auto}.transcript-label{font-size:13px;font-weight:700;color:var(--teal);letter-spacing:.06em;margin-top:0;margin-bottom:24px}.speech-paragraph{font-size:18px;line-height:2;margin-top:0;margin-bottom:1.5em}.uncertain{font-size:.9em;color:#806329;background:#fff6df}.transcript-aside{padding:16px 20px;border-left:3px solid #9ab7bd;background:#f0f5f6;color:#5e737d;font-size:15px;line-height:1.85;margin-bottom:25px}.back-to-slides{display:block;color:var(--teal);font-size:14px;margin-top:26px;text-underline-offset:4px}.source-downloads{display:flex;flex-wrap:wrap;gap:10px}.source-downloads a{color:var(--teal);border:1px solid #a6bec4;background:#f6fafa;border-radius:4px;padding:10px 14px;text-decoration:none;font-size:14px}.source-downloads a:hover{background:white}.sources h2{grid-row:1/5}.sources-inner>p,.sources-inner>div{grid-column:2}
@media(max-width:650px){.reading-tools{padding:20px 4px 0}.reading-options{display:block}.reading-options button{margin-top:15px}.topic-nav{gap:6px;margin-top:17px}.topic-nav a{padding:6px 9px}.slides{gap:44px}.topic{gap:17px}.topic-heading{display:block;padding:0 4px 12px}.topic-heading h3{font-size:21px;margin-bottom:8px}.transcript summary{padding:19px 20px;font-size:17px}.transcript-body{padding:25px 22px 30px}.speech-paragraph{font-size:17px;line-height:1.95}.source-downloads{margin:20px 0}.source-downloads a{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.intro-actions a{transform:none!important}}