:root{--navy:#102d43;--night:#0b1d2b;--ivory:#faf7f0;--gold:#b39358;--muted:#57636b;--line:#d9d0c0}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--ivory);color:var(--navy);font:17px/1.65 'DM Sans',Arial,sans-serif}h1,h2,h3{font-family:'Playfair Display',Georgia,serif;font-weight:400;line-height:1.15;margin:0 0 20px}h1{font-size:clamp(40px,5.6vw,76px);letter-spacing:-.025em}h2{font-size:clamp(32px,4vw,48px)}h3{font-size:27px}p{margin:0 0 18px}a{color:inherit;text-underline-offset:5px}button,input,textarea,select{font:inherit}button,a,input,textarea,select{touch-action:manipulation}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:4px}.wrap{width:min(1140px,88%);margin:auto}.top{background:var(--night);color:var(--ivory)}.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px 0}.brand{font:23px Georgia,serif;text-decoration:none}.top nav{display:flex;gap:22px;font-size:14px}.eyebrow{font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#866627;margin-bottom:18px;display:block}.hero{display:grid;grid-template-columns:1.15fr 1fr;align-items:stretch;background:var(--navy);color:white}.hero-copy{padding:60px max(6vw,24px)}.hero .eyebrow{color:#e0c38f}.hero p{max-width:550px;color:#e1e7ec}.hero figure{margin:0;position:relative;min-height:400px}.hero img{width:100%;height:100%;object-fit:cover}.hero figcaption{position:absolute;bottom:0;left:0;right:0;padding:24px;background:linear-gradient(transparent,rgba(0,0,0,.7));font-size:14px;color:white}.button{display:inline-block;background:var(--navy);border:1px solid var(--navy);color:white;padding:12px 22px;text-decoration:none;font-size:16px}.hero .button{background:var(--ivory);color:var(--navy);border-color:var(--ivory);margin-top:12px}.path{position:sticky;top:0;z-index:5;background:var(--ivory);border-bottom:1px solid var(--line)}.path .wrap{display:flex;justify-content:space-between;gap:12px;padding:15px 0}.path a{font-size:15px;text-decoration:none}.path b{color:#866627;margin-right:7px}.chapter{padding:68px 0;border-bottom:1px solid var(--line)}.intro{max-width:800px}.lead{font-size:21px}.muted,.small{color:var(--muted)}.small{font-size:14px}.two{display:grid;grid-template-columns:1fr 1fr;gap:32px}.three{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.panel{padding:28px;background:white;border:1px solid var(--line);margin:22px 0}.panel h3{margin-bottom:12px}.callout{border-left:3px solid var(--gold);padding:8px 0 8px 24px;margin:28px 0;font:italic 24px/1.5 Georgia,serif}.note-label{display:block;font-size:15px;margin-bottom:8px}textarea{resize:vertical;display:block;width:100%;min-height:85px;border:1px solid #9aa5aa;background:white;color:var(--navy);padding:12px;border-radius:0}label{display:block}.notes{margin-top:25px}.notes label{margin-bottom:20px}.timeline-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:45px 0 24px}.timeline-head h3{margin:0}select{padding:9px;border:1px solid #9aa5aa;background:white;color:var(--navy)}.timeline{display:grid;grid-template-columns:300px 1fr;gap:32px}.stages{display:flex;flex-direction:column;gap:4px}.stage-button{display:flex;gap:14px;align-items:center;text-align:left;border:0;border-bottom:1px solid var(--line);padding:12px;background:transparent;color:var(--navy);font-size:16px}.stage-button span{font-size:14px;color:#866627;min-width:23px}.stage-button[aria-pressed=true]{background:var(--navy);color:white}.stage-button[aria-pressed=true] span{color:#e0c38f}.stage-detail{padding:35px;background:white;border:1px solid var(--line);align-self:start}.stage-detail h3{font-size:37px}.stage-number{font:70px Georgia,serif;color:#b39358;margin-bottom:12px}.stage-meta{font-size:15px;color:var(--muted);margin:0 0 24px}.climate{background:#eaf0f3;padding:20px;margin:24px 0}.climate strong{display:block;margin-bottom:8px}.stage-controls{display:flex;justify-content:space-between;gap:15px;margin-top:25px}.stage-controls button{background:transparent;border:1px solid #8d9da7;color:var(--navy);padding:8px 15px;font-size:15px}.stage-controls button:disabled{opacity:.4;cursor:default}.table-scroll{overflow-x:auto;margin:24px 0}table{border-collapse:collapse;width:100%;min-width:570px;font-size:16px;text-align:left}td,th{padding:16px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--navy);color:white;font-weight:500}.question{border:1px solid var(--line);background:white;padding:24px;margin:24px 0}.question legend{font-weight:600;padding:0 6px}.answers{display:grid;gap:10px}.answer{border:1px solid #bdc7cb;padding:12px;text-align:left;background:white;color:var(--navy);font-size:16px}.answer[aria-pressed=true]{border:2px solid var(--navy);background:#edf1f4}.feedback{margin-top:16px}.feedback:empty{display:none}.question.correct{border-color:#537c66}.question.wrong{border-color:#ac7947}details{padding:18px 0;border-top:1px solid var(--line)}summary{cursor:pointer;font-weight:600}details p{margin-top:16px}.share{background:#eaf0f3}.score{font-weight:600;margin:24px 0}.closing{background:var(--navy);color:white;padding:50px 0}.closing .eyebrow{color:#e0c38f}.signature{font:15px monospace;margin-top:30px}footer{background:var(--night);color:#d5dfe6;padding:24px 6%;display:flex;justify-content:space-between;gap:20px;font-size:14px}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;z-index:10;background:white;padding:12px}[hidden]{display:none!important}@media(max-width:800px){.hero{grid-template-columns:1fr}.hero figure{min-height:0;height:270px}.hero-copy{padding:42px 6%}.timeline{grid-template-columns:1fr}.stages{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.stage-detail{padding:24px}.two,.three{grid-template-columns:1fr;gap:10px}.path .wrap{flex-wrap:wrap;justify-content:start;gap:8px 22px}.top .wrap{flex-wrap:wrap}.chapter{padding:45px 0}.timeline-head{align-items:start;flex-direction:column}.panel{margin:10px 0}.stage-button{font-size:15px;padding:10px}.stage-detail h3{font-size:31px}.path a{font-size:14px}footer{flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{.top,.path,.stage-controls,footer{display:none}.hero{display:block;color:#102d43;background:white}.hero p{color:inherit}.hero figure{display:none}.chapter{break-inside:avoid}.button{display:none}}

/* Course artwork retains its full original composition. */
.course-cover{margin:0;background:var(--ivory)}.course-cover>a{display:block;max-width:1440px;margin:auto}.course-cover img,.course-slide img{display:block;width:100%;height:auto}.course-cover figcaption{padding:10px 6%;text-align:right;font-size:14px}.course-intro{display:block}.course-intro .hero-copy{width:min(1140px,88%);margin:auto;padding:40px 0}.course-intro h1{font-size:clamp(32px,4vw,52px);max-width:880px}.course-intro p{max-width:850px}.course-slide{margin:24px 0 36px}.course-slide>a{display:block}.course-slide figcaption{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--muted);padding:12px 0}.course-slide figcaption a span{font-size:13px}@media print{.course-cover figcaption,.course-slide figcaption a{display:none}.course-cover,.course-slide{break-inside:avoid}}

/* Opening film: loaded and played only at the visitor's request. */
.intro-actions{display:flex;flex-wrap:wrap;gap:12px 18px;align-items:center}.hero .intro-toggle{background:transparent;border-color:#e0c38f;color:#f4e0b9}.intro-player{margin-top:28px;max-width:960px}.intro-player video{display:block;width:100%;height:auto;aspect-ratio:16/9;background:var(--night)}.hero .intro-caption{max-width:none;font-size:14px;margin:12px 0 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px}.hero .intro-status{font-size:14px;margin:12px 0}.intro-status:empty{display:none}@media print{.intro-actions,.intro-player{display:none}}

.course-guide{padding-top:40px;padding-bottom:42px}.guide-heading{display:grid;grid-template-columns:1.3fr 1fr;align-items:center;gap:32px;margin-bottom:22px}.guide-heading h2{font-size:clamp(28px,3vw,38px);margin-bottom:14px}.guide-heading p{margin-bottom:10px}#reading-count{font-size:15px}#reading-progress{display:block;width:100%;height:8px;accent-color:var(--navy);margin:12px 0 16px}#reading-resume{display:block;font-size:16px;margin-bottom:12px}.course-topics{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 24px}.course-topics a{display:flex;gap:12px;align-items:baseline;min-height:52px;padding:14px 0;border-top:1px solid var(--line);font-size:16px;text-decoration:none}.topic-number{color:#866627;font-size:14px;min-width:22px}.course-topics a[aria-current="location"]{font-weight:600;border-top-color:var(--navy)}.course-topics a[data-visited="true"] .topic-number{color:var(--navy)}.path .index-link{text-decoration:underline;text-underline-offset:5px}#reading-storage{font-size:14px}@media(max-width:800px){.guide-heading{grid-template-columns:1fr;gap:12px}.course-topics{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}}@media(max-width:480px){.course-topics{grid-template-columns:1fr}}

html{scroll-padding-top:var(--course-nav-height,90px)}