:root{--navy:#003057;--navy-dark:#061c2c;--gold:#b3a369;--cream:#f5f1e8;--paper:#fbfaf6;--ink:#17232d;--muted:#61707a;--line:#d9d7cf;--teal:#0b6e75}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"DM Sans",sans-serif;line-height:1.6}.site-header{height:84px;padding:0 clamp(24px,5vw,72px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(251,250,246,.94);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:12px;color:var(--navy);text-decoration:none;font-weight:700;line-height:1.1}.brand small{display:block;font:500 10px "DM Mono";letter-spacing:.15em;text-transform:uppercase;color:var(--muted);margin-top:4px}.brand-mark{width:40px;height:40px;border:1px solid var(--gold);display:grid;place-items:center;font:600 15px "DM Mono";color:var(--navy)}nav{display:flex;gap:28px;align-items:center}nav a{font-size:14px;color:var(--ink);text-decoration:none}nav a:hover{color:var(--teal)}.github-link{border-left:1px solid var(--line);padding-left:28px}.hero{min-height:680px;padding:clamp(70px,9vw,130px) clamp(24px,7vw,110px);display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:7vw;overflow:hidden}.eyebrow{font:500 11px "DM Mono";letter-spacing:.18em;text-transform:uppercase;color:var(--teal);margin:0 0 16px}.hero h1,.page-intro h1,.lecture-heading h1{font:500 clamp(56px,7.5vw,112px)/.88 "Newsreader",serif;letter-spacing:-.045em;color:var(--navy-dark);margin:0}.hero h1 em{color:var(--teal);font-weight:500}.hero-description{font-size:clamp(18px,2vw,24px);max-width:590px;color:var(--muted);margin:34px 0}.hero-actions{display:flex;gap:28px;align-items:center}.button{display:inline-block;background:var(--navy);color:#fff!important;text-decoration:none;padding:14px 20px;font:600 13px "DM 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Mono";letter-spacing:.12em;color:var(--muted)}.axis-label.x{right:8%;bottom:48%}.axis-label.y{left:48%;top:5%;transform:rotate(-90deg)}.course-facts{display:grid;grid-template-columns:repeat(4,1fr);background:var(--navy);color:#fff;padding:30px clamp(24px,7vw,110px)}.course-facts div{padding:8px 28px;border-right:1px solid rgba(255,255,255,.2)}.course-facts div:first-child{padding-left:0}.course-facts div:last-child{border:0}.course-facts span{display:block;font:10px "DM Mono";text-transform:uppercase;letter-spacing:.14em;color:#d8d1b9;margin-bottom:7px}.course-facts strong{font-size:15px}.intro-grid,.quality-grid{padding:110px clamp(24px,8vw,130px);display:grid;grid-template-columns:1fr 1fr;gap:9vw}.intro-grid h2,.section-heading h2,.collab-banner h2,.quality-grid h2,.contributor-panel h2,.edit-callout h2{font:500 clamp(34px,4vw,56px)/1.05 "Newsreader";color:var(--navy);margin:0}.prose{font-size:17px;color:#34434d}.prose p:first-child{margin-top:0}.pathway{padding:100px clamp(24px,7vw,110px);background:var(--cream)}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:54px}.arc-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #c6c1b4}.arc-grid article{padding:30px 24px 16px;border-right:1px solid #c6c1b4}.arc-grid article:first-child{padding-left:0}.arc-grid article:last-child{border:0}.arc-grid span,.contribution-steps span{font:11px "DM Mono";color:var(--teal)}.arc-grid h3{font:500 24px "Newsreader";color:var(--navy)}.arc-grid p{color:var(--muted);font-size:14px}.collab-banner{padding:70px clamp(24px,7vw,110px);background:var(--teal);color:#fff;display:grid;grid-template-columns:1.2fr 1fr auto;gap:5vw;align-items:center}.collab-banner .eyebrow{color:#d7e8e6}.collab-banner h2{color:#fff}.collab-banner p{margin:0}.button-light{background:#fff;color:var(--navy)!important;white-space:nowrap}.page-intro{padding:100px clamp(24px,8vw,130px) 70px;max-width:1100px}.page-intro h1{font-size:clamp(58px,8vw,100px)}.page-intro>p:last-child{font-size:19px;color:var(--muted);max-width:720px}.lecture-index{padding:0 clamp(24px,8vw,130px) 80px}.lecture-row{display:grid;grid-template-columns:70px 100px 1fr 140px 24px;gap:16px;align-items:center;padding:22px 4px;border-top:1px solid var(--line);color:var(--ink);text-decoration:none;transition:.15s}.lecture-row:hover{padding-left:14px;background:var(--cream)}.lecture-number,.lecture-date,.lecture-team{font:11px "DM Mono";text-transform:uppercase;color:var(--muted)}.lecture-title{font:500 22px "Newsreader";color:var(--navy)}.arrow{color:var(--teal)}.schedule-note{margin:-40px clamp(24px,8vw,130px) 90px;color:var(--muted);font-size:13px}.contribute-intro{max-width:1200px}.contribution-steps{display:grid;grid-template-columns:repeat(3,1fr);padding:0 clamp(24px,8vw,130px) 100px;gap:1px;background:var(--line)}.contribution-steps article{background:var(--paper);padding:42px}.contribution-steps h2{font:500 27px "Newsreader";color:var(--navy)}.contribution-steps p{color:var(--muted)}code{font-family:"DM Mono";font-size:.85em;background:var(--cream);padding:2px 5px}.quality-grid{background:var(--cream)}.quality-grid ul{margin:0;padding:0;list-style:none}.quality-grid li{padding:14px 0;border-bottom:1px solid #cbc6ba}.quality-grid li:before{content:"✓";color:var(--teal);margin-right:14px}.center-action{text-align:center;padding:60px}.lecture-page{padding:70px clamp(24px,8vw,130px) 110px}.back-link{color:var(--teal);text-decoration:none;font-size:13px}.lecture-heading{display:flex;justify-content:space-between;gap:30px;align-items:start;padding:55px 0 70px}.lecture-heading h1{font-size:clamp(50px,7vw,88px);max-width:900px}.lede{font-size:20px;color:var(--muted);max-width:720px}.status{font:10px "DM Mono";text-transform:uppercase;letter-spacing:.12em;padding:8px 11px;border:1px solid var(--line);color:var(--muted)}.contributor-panel{background:var(--navy);color:#fff;padding:38px;display:grid;grid-template-columns:1fr 1.6fr;gap:50px}.contributor-panel h2{color:#fff;font-size:36px}.contributor-panel p:last-child{color:#bfcad2}.contributor-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;list-style:none;padding:0;margin:0}.contributor-list li{border:1px solid rgba(255,255,255,.22);padding:13px 16px}.contributor-list span{font:10px "DM Mono";color:var(--gold);margin-right:14px}.lecture-content{max-width:820px;margin:80px auto}.lecture-content h2{font:500 36px "Newsreader";color:var(--navy);margin-top:54px}.lecture-content h3{color:var(--navy);margin-top:32px}.lecture-content a{color:var(--teal)}.edit-callout{padding:50px;background:var(--cream);max-width:960px;margin:auto}.edit-callout h2{font-size:40px}.edit-callout .button{margin-top:15px}footer{padding:40px clamp(24px,5vw,72px);border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted);font-size:12px}@media(max-width:850px){.site-header{height:auto;padding:16px 20px;align-items:flex-start}.site-header nav{gap:14px;flex-wrap:wrap;justify-content:flex-end}.github-link{border:0;padding:0}.hero{grid-template-columns:1fr;padding-top:70px}.hero-visual{height:380px}.course-facts,.arc-grid{grid-template-columns:1fr 1fr}.course-facts div:nth-child(2){border-right:0}.intro-grid,.quality-grid,.collab-banner,.contributor-panel{grid-template-columns:1fr}.contribution-steps{grid-template-columns:1fr}.lecture-row{grid-template-columns:45px 70px 1fr 20px}.lecture-team{display:none}}@media(max-width:520px){.brand small,.site-header nav a:not(.github-link){display:none}.hero h1{font-size:54px}.hero-actions{align-items:flex-start;flex-direction:column}.hero-visual{min-height:280px;height:280px}.course-facts{grid-template-columns:1fr 1fr;padding:22px}.course-facts div{padding:12px;border:0}.arc-grid{grid-template-columns:1fr}.arc-grid article{border-right:0;border-bottom:1px solid #c6c1b4;padding-left:0}.section-heading{display:block}.lecture-row{grid-template-columns:40px 1fr 20px}.lecture-date{display:none}.lecture-heading{display:block}.status{display:inline-block;margin-top:25px}.contributor-list{grid-template-columns:1fr}footer{display:block}}.course-facts a{color:#fff}.teaching-team a{color:var(--teal)}.student-materials{margin:100px auto 0;max-width:1100px}.student-materials .section-heading>p{color:var(--muted);font-size:13px}.student-materials h2{font:500 clamp(34px,4vw,52px)/1.05 "Newsreader";color:var(--navy);margin:0}.material-tabs{border:1px solid var(--line);background:#fff}.tab-list{display:grid;grid-template-columns:repeat(4,1fr);background:var(--cream);border-bottom:1px solid var(--line)}.tab-list button{appearance:none;border:0;border-right:1px solid var(--line);background:transparent;text-align:left;padding:18px 20px;color:var(--navy);font:600 14px "DM Sans";cursor:pointer}.tab-list button:last-child{border-right:0}.tab-list button span{display:block;font:500 9px "DM Mono";letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:5px}.tab-list button[aria-selected="true"]{background:var(--navy);color:#fff}.tab-list button[aria-selected="true"] span{color:var(--gold)}.tab-list button:focus-visible{outline:3px solid var(--gold);outline-offset:-3px}.tab-panel{padding:38px 44px;min-height:230px}.tab-panel[hidden]{display:none}.tab-panel h2:first-child{margin-top:0}@media(max-width:700px){.tab-list{grid-template-columns:1fr 1fr}.tab-list button:nth-child(2){border-right:0}.tab-list button:nth-child(-n+2){border-bottom:1px solid var(--line)}.tab-panel{padding:28px 24px}}

/* Learning areas in the semester schedule. */
.schedule-modules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;padding:36px clamp(24px,8vw,130px) 12px}
.schedule-modules a{position:relative;display:flex;flex-direction:column;gap:10px;padding:24px 40px 24px 24px;border:1px solid var(--line);background:var(--cream);color:var(--navy);text-decoration:none}
.schedule-modules a:hover{border-color:var(--teal);background:#fff}
.schedule-modules a:focus-visible{outline:3px solid var(--teal);outline-offset:3px}
.schedule-modules a>span:first-child{font:11px "DM Mono";color:var(--teal)}
.schedule-modules strong{font:500 25px "Newsreader",serif}
.schedule-modules .module-jump{position:absolute;right:20px;top:24px;color:var(--teal)}
.schedule-module{scroll-margin-top:110px;margin-top:48px}
.schedule-module-heading{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:end;padding:0 0 24px;border-bottom:2px solid var(--teal)}
.schedule-module-heading .eyebrow{margin-bottom:10px}
.schedule-module-heading h2{font:500 clamp(30px,4vw,42px)/1.1 "Newsreader",serif;color:var(--navy);margin:0}
.schedule-module-heading>p{font-size:15px;color:var(--muted);margin:0;max-width:470px}
.schedule-module .lecture-row:first-of-type{border-top:0}
@media(max-width:700px){.schedule-modules{grid-template-columns:1fr;gap:10px}.schedule-modules a{padding:18px 40px 18px 20px;gap:6px}.schedule-module-heading{grid-template-columns:1fr;gap:16px}.schedule-module{scroll-margin-top:130px}}