:root{--ink:#183b38;--orange:#a54816;--paper:#f9faf7;--line:#d8e0dc;--muted:#536864}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,sans-serif;font-size:16px;line-height:1.65}button,input{font:inherit}a{color:var(--orange);text-underline-offset:3px}button,a,input,summary{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #b9581b;outline-offset:4px}header{height:94px;padding:0 5%;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);background:white}.brand{text-decoration:none;color:var(--ink);line-height:1.2}.brand b{font-family:Georgia,serif;font-size:27px;letter-spacing:2px}.brand b span{font-size:14px;letter-spacing:1.8px}.brand small{display:block;font-size:13px;letter-spacing:1px;margin-top:7px}.edition,.eyebrow,.navtitle{font-size:12px;font-weight:700;letter-spacing:1.5px}.edition{color:var(--muted)}main{display:grid;grid-template-columns:280px minmax(0,1fr);max-width:1560px;margin:auto}aside{padding:44px 26px 24px 30px;border-right:1px solid var(--line);align-self:start;position:sticky;top:0;height:calc(100vh - 20px)}.navtitle{margin-bottom:24px;color:var(--muted)}nav{display:grid;gap:6px}nav button{border:0;border-left:3px solid transparent;color:var(--muted);background:none;text-align:left;padding:13px 12px;font-size:15px;cursor:pointer;line-height:1.4}nav button.active{background:#e5eeea;color:var(--ink);border-color:var(--orange);font-weight:700}nav button:hover{background:#eaf0ed}.aside-note{border-top:1px solid var(--line);padding-top:25px;margin-top:40px;font-family:Georgia,serif;font-size:20px;line-height:1.6}.aside-note strong{font-weight:400;font-style:italic}.website{display:block;font-size:14px;margin-top:24px}.workspace{min-width:0}.intro{padding:42px 6% 36px;background:var(--ink);color:white;position:relative;border-bottom:7px solid #ed8d43}.intro .eyebrow{color:#f4ac74}h1{font:400 clamp(32px,3.5vw,52px)/1.12 Georgia,serif;margin:17px 0} .intro p{max-width:660px;color:#d6e5df;margin-bottom:25px;line-height:1.6}.searchbox{display:flex;align-items:center;gap:12px;border:1px solid #87a49b;background:#fff;padding:11px 17px;max-width:700px;border-radius:4px;color:var(--ink)}.searchbox span{font-size:29px;line-height:1}.searchbox input{width:100%;border:0;outline:none;color:var(--ink);background:transparent;min-width:0}.searchbox:focus-within{outline:3px solid #f4ac74;outline-offset:3px}kbd{border:1px solid var(--line);padding:0 7px;color:var(--muted)}.shortcuts{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.shortcuts button{background:transparent;color:white;border:1px solid #76938a;padding:7px 13px;border-radius:3px;font-size:14px;cursor:pointer}.shortcuts button:hover{background:#31524d}.content{padding:36px 6% 60px}.sectionhead{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;gap:20px}.sectionhead .eyebrow{color:var(--orange)}h2{font:400 32px/1.25 Georgia,serif;margin:8px 0}#count{font-size:14px;color:var(--muted);white-space:nowrap}.topic{border:1px solid var(--line);border-radius:4px;background:white;margin:12px 0;overflow:hidden}.topic>summary{padding:20px 22px;cursor:pointer;display:flex;gap:18px;align-items:center;list-style:none;font-size:18px;line-height:1.4}.topic>summary::-webkit-details-marker{display:none}.topic>summary:after{content:'+';font-size:24px;margin-left:auto;font-weight:400;color:var(--orange)}.topic[open]>summary:after{content:'−'}.topic[open]>summary{border-bottom:1px solid var(--line);background:#f1f5f2}.topic-number{font-size:13px;color:var(--orange);font-weight:700}.topic-body{padding:18px 26px 30px;color:#263b38;overflow-wrap:anywhere}.topic-body h3{font:400 25px/1.3 Georgia,serif;margin:30px 0 12px;color:var(--ink)}.topic-body h4{font-size:18px;margin:25px 0 10px}.topic-body p{margin:12px 0}.topic-body ul,.topic-body ol{padding-left:24px}.topic-body li{margin:7px 0}.topic-body blockquote{margin:20px 0;background:#f2f6f3;border-left:3px solid #bc5b21;padding:12px 20px}.topic-body table{display:block;overflow-x:auto;border-collapse:collapse;width:100%;margin:20px 0}.topic-body td,.topic-body th{border:1px solid var(--line);padding:12px;text-align:left;min-width:150px}.topic-body details{padding:14px 0;border-bottom:1px solid var(--line)}.topic-body summary{cursor:pointer;font-weight:700}.task{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid #e6ece8;align-items:flex-start}.task input{width:20px;height:20px;margin-top:4px;flex-shrink:0;accent-color:var(--ink)}.task:has(input:checked) span{text-decoration:line-through;color:var(--muted)}.check-progress{font-size:14px;color:var(--orange);padding:8px 0 16px}.empty{border:1px dashed #abbdb3;padding:30px;background:white}.empty h3{font-family:Georgia,serif;font-weight:400;font-size:25px}footer{padding:30px 6%;border-top:1px solid var(--line);color:var(--muted)}footer strong{font-size:13px;letter-spacing:1.5px}footer p{font-size:14px;max-width:640px}footer small{font-size:12px}@media(min-width:1400px){.intro,.content,footer{padding-left:8%;padding-right:8%}}@media(max-width:800px){header{height:80px;padding:0 20px}.brand b{font-size:22px}.brand b span{display:block;font-size:12px;margin-top:4px}.brand small,.edition{display:none}main{display:block}aside{height:auto;position:static;border-right:0;padding:14px 18px;border-bottom:1px solid var(--line)}.navtitle,.aside-note,.website{display:none}nav{display:flex;overflow-x:auto;gap:8px;padding:3px 0}nav button{white-space:nowrap;padding:9px 12px;border-left:0;border-bottom:2px solid transparent;font-size:14px}nav button.active{border-bottom-color:var(--orange)}.intro{padding:28px 22px}.intro .eyebrow{font-size:11px}.content{padding:28px 20px 40px}h2{font-size:28px}.topic>summary{font-size:16px;padding:18px 16px;gap:12px}.topic-body{padding:14px 18px 24px}.sectionhead{align-items:flex-start}#count{margin-top:32px;font-size:12px}footer{padding:25px 22px}kbd{display:none}}@media print{header,aside,.intro,.shortcuts,footer{display:none}main{display:block}.content{padding:0}.topic-body{padding:10px}.topic{break-inside:avoid}}

.brand{display:flex;align-items:center;gap:14px}.brand img{width:52px;height:58px;object-fit:contain}.brand-type{display:block}.navtitle,.edition,.intro .eyebrow{letter-spacing:.6px;text-transform:none}nav button{font-size:15px}.topic-body h2{font-size:28px}@media(max-width:800px){.brand img{width:40px;height:46px}.brand{gap:10px}}

header{height:112px;gap:24px}.brand{flex-shrink:1;min-width:0}.brand img{display:block;width:310px;max-width:100%;height:auto;max-height:88px;object-fit:contain}.header-labels{display:flex;flex-direction:column;align-items:flex-end;gap:3px;flex-shrink:0;line-height:1.4}.header-labels span{font-size:14px;color:var(--muted)}.header-labels strong{font-size:17px;font-weight:600;color:var(--ink)}.intro h1{margin-top:0}@media(max-width:800px){header{height:96px;padding:12px 20px;gap:20px}.brand img{width:230px;max-height:68px}.header-labels span{font-size:12px}.header-labels strong{font-size:14px}}@media(max-width:480px){header{height:90px;padding:12px 16px;gap:12px}.brand img{width:185px;max-height:62px}.header-labels{gap:4px}.header-labels span{font-size:12px}.header-labels strong{font-size:13px;max-width:112px;text-align:right}}

header.banner-header{display:block;height:auto;padding:0;border:0;background:#183b38;width:100%}.banner-header a{display:block;line-height:0}.banner-header img{display:block;width:100%;height:auto;max-height:300px;object-fit:cover;object-position:center}.intro{padding-top:34px}@media(max-width:800px){header.banner-header{height:auto;padding:0}.banner-header img{max-height:none}.intro{padding-top:28px}}
/* Compact opening: keep the banner logo visible while reducing vertical space. */
.banner-header img{height:170px;max-height:170px;object-fit:cover;object-position:center}
.intro{padding-top:24px;padding-bottom:22px;border-bottom-width:4px}
.intro h1{font-size:clamp(28px,2.8vw,40px);margin:0 0 12px;line-height:1.15}
.intro p{margin:0 0 17px;max-width:760px;font-size:15px;line-height:1.5}
.searchbox{padding:8px 14px}
.shortcuts{margin-top:12px;gap:8px}
.shortcuts button{padding:5px 11px}
@media(max-width:800px){.banner-header img{height:125px;max-height:125px;object-position:25% center}.intro{padding:20px 22px}.intro h1{font-size:30px}.intro p{font-size:15px}.searchbox{padding:8px 12px}}
@media(max-width:480px){.banner-header img{height:110px;max-height:110px;object-position:20% center}.intro{padding:18px 20px}.intro h1{font-size:27px}.shortcuts button{font-size:13px}}

/* Lighter author reading surface with a quieter banner. */
header.banner-header{background:#17362f}.banner-header img{height:170px;max-height:170px;object-fit:contain;object-position:center}
.intro{background:#f3efe6;color:var(--ink);padding-top:38px;padding-bottom:38px;border-bottom:1px solid #d8d3c8}.intro h1{margin:0 0 15px}.intro p{color:#465e56}.searchbox{border-color:#c4ccbf;background:#fff}.searchbox:focus-within{outline-color:#a9572c}.shortcuts{margin-top:14px}.shortcuts button{color:#28493e;border-color:#b7c2b7;background:#e8eee5}.shortcuts button:hover{background:#dbe5d6}
@media(max-width:800px){.banner-header img{height:125px;max-height:125px;object-fit:contain;object-position:center}.intro{padding:30px 22px 32px}}@media(max-width:480px){.banner-header img{height:auto;max-height:none;object-fit:contain}.intro{padding:28px 20px 30px}}

/* Separate logo sizing from the full-width photographic header. */
header.banner-header{height:170px;display:flex;align-items:center;padding:0 6%;background-image:linear-gradient(90deg,#f7f9f9 0%,rgba(247,249,249,.97) 25%,rgba(247,249,249,.75) 38%,rgba(247,249,249,0) 65%),url(intrepid-banner.png);background-size:100% 100%,200% auto;background-position:center,right center;background-repeat:no-repeat}.banner-header a{display:block;width:270px;max-width:42%}.banner-header img{display:block;width:100%;height:auto;max-height:none;object-fit:contain}.intro{background:#edf2f3;border-bottom-color:#d6e0e2}.intro p{color:#455e60}.shortcuts button{background:#f7f9fa;border-color:#bdcbce;color:#254744}.shortcuts button:hover{background:#dce6e8}
@media(max-width:800px){header.banner-header{height:125px;padding:0 6%}.banner-header a{width:230px;max-width:48%}.banner-header img{width:100%;height:auto;max-height:none}}@media(max-width:480px){header.banner-header{height:110px;padding:0 5%;background-image:linear-gradient(90deg,#f7f9f9 0%,rgba(247,249,249,.95) 38%,rgba(247,249,249,0) 80%),url(intrepid-banner.png)}.banner-header a{width:190px;max-width:55%}.banner-header img{height:auto;max-height:none}}

/* Restore the green banner and show the book scene at its natural scale. */
header.banner-header{background-color:#183b38;background-image:linear-gradient(90deg,#183b38 0%,#183b38 41%,rgba(24,59,56,.92) 45%,rgba(24,59,56,.42) 58%,rgba(24,59,56,0) 75%),url(intrepid-banner.png);background-size:100% 100%,cover;background-position:center,center 62%}.banner-logo{display:block;position:relative;width:100%;line-height:0}.banner-logo .logo-wordmark{position:absolute;inset:0;filter:brightness(0) invert(1);clip-path:inset(0 0 0 17%)}
@media(max-width:800px){header.banner-header{background-size:100% 100%,cover;background-position:center,center 62%}}@media(max-width:480px){header.banner-header{background-image:linear-gradient(90deg,#183b38 0%,#183b38 43%,rgba(24,59,56,.9) 50%,rgba(24,59,56,.2) 75%,rgba(24,59,56,0) 100%),url(intrepid-banner.png);background-size:100% 100%,cover;background-position:center,center 62%}}
/* Pale copper introduction and a taller, higher photo crop. */
.intro{background:#eed1ba;border-bottom-color:#d6b396}.intro p{color:#3c5550}.searchbox{border-color:#caa68c}.shortcuts button{background:#f8e9de;border-color:#c99e7f;color:#25443d}.shortcuts button:hover{background:#e6bea0}
header.banner-header{height:210px;background-position:center,center 32%}
@media(max-width:800px){header.banner-header{height:165px;background-position:center,center 30%}}
@media(max-width:480px){header.banner-header{height:145px;background-position:center,right 25%}}
/* Neutral reading surface; copper remains an accent. */
.intro{background:#fff;border-bottom:2px solid #b3774c}.intro p{color:#455b55}.searchbox{background:#f8faf9;border-color:#bdcbc4}.shortcuts button{background:#f4f7f5;border-color:#bfccc5;color:#25443d}.shortcuts button:hover{background:#e5ede8}

header.banner-header{display:block;position:relative;height:auto;aspect-ratio:6 / 1;max-height:260px;padding:0;overflow:hidden;background:#183b38;background-image:none}.banner-header a{display:block;position:absolute;inset:0;width:100%;max-width:none}.banner-header img{position:absolute;width:100%;height:auto;max-height:none;top:50%;left:0;transform:translateY(-50%);object-fit:initial}@media(max-width:800px){header.banner-header{height:auto;padding:0;aspect-ratio:6 / 1;background-image:none}.banner-header a{width:100%;max-width:none}.banner-header img{height:auto;max-height:none}}@media(max-width:480px){header.banner-header{height:auto;padding:0;aspect-ratio:6 / 1;background-image:none}.banner-header a{width:100%;max-width:none}.banner-header img{height:auto;max-height:none}}

nav button .nav-label{display:block}nav button .nav-description{display:block;margin-top:5px;font-size:14px;line-height:1.45;font-style:italic;font-weight:400;color:#687672}nav button.active .nav-description{color:#5e7069}aside{height:auto;min-height:calc(100vh - 20px);max-height:100vh;overflow-y:auto}@media(max-width:800px){aside{min-height:0;max-height:none;overflow-y:visible}nav button{white-space:normal;min-width:210px;max-width:230px;flex-shrink:0}nav button .nav-description{font-size:14px}nav{align-items:stretch}}

nav button .nav-label,nav button.active .nav-label{font-weight:700;color:#000}

footer{text-align:center;padding:38px 6% 30px}footer .footer-logo{width:240px;max-width:70%;height:auto;display:block;margin:0 auto 14px}footer .copyright{font-size:13px;color:#777;margin:0 auto;max-width:none}

.source-image{margin:1.5rem 0;max-width:100%}.source-image img{display:block;max-width:100%;height:auto;object-fit:contain}.review-image img{width:180px}.acknowledgment-images{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.acknowledgment-images .source-image{margin:1rem 0}@media(max-width:600px){.acknowledgment-images{grid-template-columns:1fr}}