:root{--paper:#f1ede5;--ink:#373e35;--muted:#686e61;--line:#d2cbbb;--accent:#4f6754;--green:#61715a;--white:#fff;--light:#e3dece;--font:system-ui,-apple-system,"Microsoft YaHei",sans-serif;--display:var(--font)}*{box-sizing:border-box}html,body{overflow-x:clip}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.8 var(--font)}a{color:var(--accent);text-underline-offset:5px}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible,select:focus-visible{outline:3px solid var(--green);outline-offset:5px}button,select{font:inherit;color:inherit}h1,h2,h3,p{margin:0}h1,h2,h3{font-family:var(--display);line-height:1.23;font-style:normal;overflow-wrap:anywhere}h1{font-size:clamp(38px,5.5vw,82px);font-weight:650;letter-spacing:-.045em}h2{font-size:clamp(28px,3.3vw,48px);font-weight:600;letter-spacing:-.035em}h3{font-size:24px}p+p{margin-top:18px}nav{max-width:1440px;margin:auto;padding:23px 5vw;display:flex;align-items:center;gap:30px;border-bottom:1px solid var(--line)}.brand{color:var(--ink);font-size:25px;font-weight:750;text-decoration:none;letter-spacing:-.05em;margin-right:auto}.brand span{font-size:12px;display:block;letter-spacing:.05em;font-weight:500;color:var(--muted);line-height:1.1}.nav-link{font-size:14px;text-decoration:none;white-space:nowrap}main{max-width:1440px;margin:auto;padding:0 5vw}.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:center;gap:36px;min-height:670px;padding:64px 0 46px}.eyebrow{color:var(--green);font-size:12px;letter-spacing:.15em;font-weight:700;margin-bottom:24px}.hero h1{max-width:9em}.hero p{max-width:31em;color:var(--muted);margin-top:28px;font-size:19px}.actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;white-space:nowrap;padding:10px 20px;background:var(--accent);color:var(--white);border:1px solid var(--accent);border-radius:3px;font-size:15px;text-decoration:none;cursor:pointer}.button:hover{background:var(--ink);border-color:var(--ink)}.button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}.button:active{transform:translateY(1px)}.atlas{position:relative;min-width:0}.atlas svg{width:100%;height:auto;display:block}.atlas .terrain{fill:none;stroke:var(--line);stroke-width:1.2}.atlas .route{fill:none;stroke:var(--green);stroke-width:2;stroke-dasharray:1000;stroke-dashoffset:0;animation:draw 2s ease-out 1}.atlas .building-top{fill:var(--white);stroke:var(--ink)}.atlas .building-left{fill:var(--light);stroke:var(--ink)}.atlas .building-right{fill:var(--paper);stroke:var(--ink)}.atlas a{color:var(--ink);text-decoration:none}.atlas a>g{transition:transform 180ms ease-out}.atlas a:hover>g,.atlas a:focus-visible>g{transform:translateY(-5px)}.atlas text{fill:var(--ink);font-family:var(--font);font-size:17px}.atlas .sub{fill:var(--muted);font-size:11px}.atlas-controls{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);gap:12px}.atlas-controls button{border:1px solid var(--line);background:transparent;padding:3px 9px;font-size:12px;cursor:pointer}.paused .route{animation:none}.course-feature{border-top:1px solid var(--ink);padding:34px 0 55px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:52px}.course-feature .number{font-size:14px;color:var(--green);margin-bottom:20px}.course-feature .intro{font-size:22px;line-height:1.6;max-width:25em}.course-feature .meta{font-size:13px;color:var(--muted);margin-top:18px}.feature-art{display:flex;min-height:230px;align-items:center;justify-content:center;background:var(--ink);color:var(--paper);position:relative;padding:35px;overflow:hidden}.feature-art .earth-ring{width:140px;height:140px;border:1px solid var(--light);border-radius:50%;position:relative;flex-shrink:0;margin-right:28px}.earth-ring:before,.earth-ring:after{content:"";position:absolute;inset:20px -1px;border:1px solid var(--line);border-radius:50%}.earth-ring:after{inset:-1px 38px}.feature-art p{font-size:26px;line-height:1.45}.reading-section{border-top:1px solid var(--line);padding:48px 0;display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.5fr);gap:50px}.reading-section h2{font-size:33px}.reading-section .text{max-width:44em}.path{display:flex;gap:18px;flex-wrap:wrap;font-size:21px;margin:28px 0}.path span{padding-bottom:8px;border-bottom:2px solid var(--green)}footer{max-width:1440px;margin:auto;border-top:1px solid var(--line);padding:27px 5vw;display:flex;flex-wrap:wrap;gap:24px;font-size:13px;color:var(--muted)}footer a{white-space:nowrap}.intro-page{padding:55px 0 40px}.intro-page h1{font-size:clamp(34px,4.7vw,64px);max-width:16em}.intro-page p{max-width:48em;margin-top:24px;font-size:20px}.day-links{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:32px 0 55px}.day-links article{border-top:2px solid var(--ink);padding-top:24px}.day-links p{margin-top:18px;max-width:33em;color:var(--muted)}.resource{padding:22px 0;border-top:1px solid var(--line)}.resource h3{font-size:22px}.resource p{margin:10px 0;color:var(--muted)}.resource a{font-size:15px}.content-sheet{max-width:900px;padding:32px 0 60px;margin:auto}.content-sheet h2{margin:35px 0 18px}.content-sheet h3{margin:26px 0 12px}.write-space{height:90px;border-bottom:1px solid var(--line)}.write-space.big{height:155px}.sheet-table{width:100%;border-collapse:collapse}.sheet-table td,.sheet-table th{padding:12px;border:1px solid var(--line);text-align:left}.sheet-table td{height:70px}.deck-shell{max-width:1440px;margin:auto;padding:25px 5vw 95px}.deck-page{display:none;min-height:650px;padding:30px 0}.deck-page.active{display:block}.deck-page header{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;gap:20px;margin-bottom:35px}.deck-page h1{font-size:clamp(32px,4.5vw,65px);max-width:18em;margin-bottom:38px}.deck-content{max-width:940px}.deck-content p{font-size:clamp(20px,2.5vw,33px);line-height:1.65;margin:20px 0}.deck-content p:before{content:"";display:inline-block;width:7px;height:7px;background:var(--green);margin:0 17px 6px 0}.deck-question{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:18px;color:var(--green)}.deck-controls{position:fixed;bottom:0;left:0;right:0;background:var(--ink);color:var(--paper);padding:12px 5vw;display:flex;align-items:center;gap:12px;z-index:5}.deck-controls button,.deck-controls select{border:1px solid var(--muted);background:var(--ink);color:var(--paper);padding:5px 12px;cursor:pointer}.deck-controls select{max-width:55vw;width:390px}.deck-controls .end{margin-left:auto}.no-js .deck-page{display:block;border-bottom:1px solid var(--line)}.diagram{margin:30px 0;max-width:850px;display:block;width:100%;height:auto}.diagram text{font:17px var(--font);fill:var(--ink)}.diagram .track{stroke:var(--green);fill:none;stroke-width:2}.diagram rect{fill:var(--white);stroke:var(--line)}.speaker-layout{display:grid;grid-template-columns:1fr 1fr;gap:30px}.speaker-layout h2{font-size:30px}.speaker-layout p{font-size:20px}.speaker-layout section{padding:25px;border:1px solid var(--line)}@keyframes draw{from{stroke-dashoffset:1000}to{stroke-dashoffset:0}}@media(max-width:768px){nav{gap:17px;padding:20px}.brand{font-size:23px}.nav-link{font-size:12px}main{padding:0 22px}.hero{grid-template-columns:1fr;min-height:0;gap:15px;padding:42px 0 32px}.hero h1{font-size:52px}.hero p{font-size:17px}.atlas{max-width:520px;margin:auto;width:100%}.course-feature,.reading-section,.day-links{grid-template-columns:minmax(0,1fr);gap:28px}.course-feature .intro{font-size:19px}.reading-section{padding:35px 0}.feature-art{padding:26px;min-height:180px}.feature-art p{font-size:23px}.feature-art .earth-ring{width:105px;height:105px;margin-right:20px}.intro-page p{font-size:18px}.deck-shell{padding:15px 22px 110px}.deck-page{min-height:0}.deck-controls{padding:12px;gap:7px;flex-wrap:wrap}.deck-controls select{max-width:60vw;width:220px;font-size:12px}.deck-controls .end{margin-left:0}.speaker-layout{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media print{@page{size:A4;margin:15mm}nav,footer,.deck-controls,.actions,.atlas-controls,.no-print{display:none!important}body{background:var(--white);font-size:12pt}.hero,.reading-section,.day-links,.course-feature{display:block;min-height:0;padding:20px 0}.deck-shell{padding:0}.deck-page,.deck-page.active{display:block;break-after:page;min-height:0;padding:0}.deck-page:last-child{break-after:auto}.deck-page h1{font-size:28pt}.deck-content p{font-size:17pt}.deck-page header{margin-bottom:20px}.deck-question{font-size:13pt}.content-sheet{padding:0}.content-sheet h2{font-size:20pt}.sheet-table td{height:45px}.write-space{height:65px}.diagram{max-height:220px}.atlas .route{animation:none}*{print-color-adjust:exact}}

/* AHALab logo typography */
.brand{font-family:Georgia,"Times New Roman",serif;font-weight:400;letter-spacing:.09em}.brand span{font-family:var(--font);letter-spacing:.04em}.brand-logo-reference{max-width:320px;height:auto;width:100%;border:1px solid var(--line)}

.brand{display:flex;align-items:center;gap:10px}.brand>img{width:56px;height:56px;object-fit:contain;border-radius:50%;flex-shrink:0}.brand .brand-type{font:inherit;color:inherit;letter-spacing:inherit}.brand .brand-type>span{font:11px/1.2 var(--font);letter-spacing:.03em;color:var(--muted);margin-top:3px}@media(max-width:768px){.brand>img{width:44px;height:44px}.brand{gap:7px}.brand .brand-type>span{font-size:9px}}

.language-switch{display:flex;gap:12px;font-size:12px;white-space:nowrap}.language-switch [aria-current]{color:var(--ink);text-decoration:none;font-weight:700}html[lang=en] h1{letter-spacing:-.035em;overflow-wrap:normal}html[lang=en] .deck-page h1{font-size:clamp(30px,4vw,57px)}html[lang=en] .deck-content p{font-size:clamp(19px,2.1vw,28px)}html[lang=en] .feature-art p{font-size:22px}html[lang=en] .diagram text{font-size:15px}@media(max-width:768px){nav{flex-wrap:wrap}.brand{flex:1 0 50%}.language-switch{margin-left:auto}.nav-link{font-size:12px}.hero h1{font-size:46px}.feature-art{flex-wrap:wrap;gap:18px}.feature-art .earth-ring{margin-right:0}.intro-page h1{font-size:36px}}@media print{html[lang=en] .deck-page h1{font-size:25pt}html[lang=en] .deck-content p{font-size:16pt}}

.license-sheet h1{font-size:clamp(34px,4.5vw,58px)}.license-sheet blockquote{margin:24px 0;padding:20px 24px;border-left:3px solid #66765b;background:#e7e6d9;overflow-wrap:anywhere}.print-credit{font-size:10px!important;color:#686e61;margin-top:24px;line-height:1.5}.print-edition{display:none}@media print{.print-edition{display:inline}.print-credit{font-size:7pt!important;break-inside:avoid;margin-top:10mm}}