:root{--paper:#fff9ec;--ink:#1a1710;--muted:#615a50;--line:#d7cfc2;--green:#006876;--lime:#e8e2d4;--orange:#b0223e;--white:#fffdf7}*{box-sizing:border-box}html{scroll-behavior:smooth;scrollbar-color:#006876 var(--paper)}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 'Inter',sans-serif}::selection{background:var(--lime);color:var(--green)}button,input,select{font:inherit}button,a,input,select{outline-offset:5px;accent-color:var(--green)}:focus-visible{outline:2px solid var(--orange)}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-underline-offset:4px}h1,h2,h3,h4,.brand{font-family:'Space Grotesk',sans-serif;line-height:1.12}h1{font-size:clamp(42px,4.4vw,68px);letter-spacing:-.02em;margin:18px 0 22px;font-weight:500}h1 em{font-style:normal;color:var(--green);position:relative}h1 em:after{content:'';height:6px;background:var(--lime);position:absolute;bottom:0;left:0;right:0;z-index:-1}h2{font-size:29px;letter-spacing:-.02em;margin:8px 0 20px}h3{font-size:23px;margin:25px 0 12px}p{max-width:70ch}aside{width:250px;position:fixed;inset:0 auto 0 0;background:#f4eee2;border-right:1px solid var(--line);padding:34px 22px;display:flex;flex-direction:column;z-index:3}.brand{display:flex;gap:12px;text-decoration:none;font-size:29px;font-weight:700;align-items:center}.brand small{font:9px 'Inter';display:block;letter-spacing:1.1px;margin-top:7px}.brand .thin{font-weight:400;color:var(--muted)}.brand-icon{background:var(--green);color:var(--paper);width:41px;height:46px;display:grid;place-items:center;border-radius:10px;font-size:35px;position:relative}.brand-icon span{font:17px sans-serif;position:absolute;right:3px;top:0}.course-label{font-size:10px;letter-spacing:1.7px;color:var(--muted);margin:48px 12px 14px}nav{display:flex;flex-direction:column;gap:5px}nav button{border:0;background:none;text-align:left;padding:12px 10px;border-radius:8px;display:flex;align-items:center;gap:12px;color:#615a50;font-size:13px}nav button:hover{background:#e8e2d4}nav button.active{background:var(--green);color:var(--paper)}nav button .num{font:11px 'JetBrains Mono',monospace;opacity:.7}.sidebar-foot{margin-top:auto;padding:25px 10px 0;font-size:11px;color:var(--muted)}.progress-track{height:4px;background:#e8e2d4;margin:18px 0 8px}.progress-track div{background:var(--green);height:100%;transition:width .4s}.text-button{border:0;background:none;padding:8px 0;text-decoration:underline;color:var(--muted);display:block;font-size:11px}.shell{margin-left:250px}header{height:76px;border-bottom:1px solid var(--line);padding:0 48px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}header a{color:var(--green);font-weight:600}main{max-width:1330px;margin:auto;padding:0 48px}.intro{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:center;padding:57px 0 52px;border-bottom:1px solid var(--line)}.breadcrumb{color:var(--green);font-size:12px;font-weight:600}.hero-copy p{color:var(--muted);font-size:15px;max-width:420px;margin-bottom:26px}.primary,.secondary{border:0;border-radius:6px;padding:12px 19px;font-size:13px;font-weight:600;display:inline-flex;gap:24px;align-items:center;justify-content:center}.primary{background:var(--green);color:var(--paper)}.primary:hover{background:#03919f}.secondary{border:1px solid #b7aaa0;background:transparent;color:var(--green)}.secondary:hover{background:#e8e2d4}.primary:disabled,.secondary:disabled{opacity:.4;cursor:default}.small-note{font-size:10px;color:var(--muted);display:block;margin:11px 0 0}.hero-diagram{background:#e8e2d4;border:1px solid #d7cfc2;border-radius:16px;padding:25px 26px;transform:rotate(2deg);max-width:370px;justify-self:end;width:100%}.diagram-top{display:flex;align-items:center;gap:14px;font-size:12px;line-height:1.5;margin-bottom:22px}.wp-mark{border:1.5px solid var(--green);width:39px;height:39px;border-radius:50%;display:grid;place-items:center;font:28px Georgia;color:var(--green)}.bridge-row{display:flex;align-items:center;justify-content:space-between;background:#fff9ec;padding:10px 14px;margin:8px 0;border-radius:5px;font-size:12px}.bridge-row strong{color:var(--green);min-width:95px}.bridge-row i{font-style:normal;color:#006876}.diagram-bottom{font-size:9px;display:flex;align-items:center;gap:8px;margin-top:20px}.spark{font-size:24px;color:var(--orange)}.lesson-top{display:flex;justify-content:space-between;align-items:center;margin-top:35px}.lesson-number{font:10px 'JetBrains Mono',monospace;letter-spacing:1px;color:var(--muted)}.lesson-top h2{margin:8px 0 23px}.duration{font-size:11px;border:1px solid var(--line);padding:5px 10px;border-radius:25px;color:var(--muted)}.lead{font-size:16px;color:var(--muted);margin-top:0}.callout{padding:18px 23px;background:#e8e2d4;border-radius:8px;margin:22px 0;color:var(--green)}.compare{display:grid;grid-template-columns:1fr 1fr;margin:24px 0;border:1px solid var(--line);border-radius:12px;overflow:hidden}.compare>div{padding:22px;background:var(--white)}.compare>div+div{background:#e8e2d4;border-left:1px solid var(--line)}.compare h3{margin:0 0 14px;font-size:18px}.compare p{font-size:13px;margin-bottom:0}.mini-tag{font-size:10px;letter-spacing:.8px;color:var(--muted)}.flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:14px 0}.flow span{background:#fffdf4;padding:6px 10px;border:1px solid var(--line);font-size:11px;border-radius:5px}.flow i{font-style:normal;font-size:15px}.tabbar{display:flex;gap:5px;flex-wrap:wrap;margin:21px 0 15px}.tabbar button{border:1px solid #b7aaa0;background:transparent;border-radius:6px;color:var(--green);padding:8px 14px;font-size:12px}.tabbar button.selected{background:var(--green);color:var(--paper);border-color:var(--green)}.lab{background:var(--white);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin:22px 0}.lab-header{padding:13px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;font-size:12px}.lab-header span{color:var(--muted);font-size:10px}.lab-body{padding:22px}.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.code{background:#1a1710;color:#fff9ec;border-radius:8px;padding:20px;white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.8 ui-monospace,SFMono-Regular,monospace;margin:0}.code-label{color:var(--muted);font-size:10px;margin-bottom:8px;display:block}.note{color:var(--muted);font-size:12px}.lesson-actions{display:flex;justify-content:space-between;gap:12px;margin:27px 0 50px}.translator{border-top:1px solid var(--line);padding-top:34px;display:grid;grid-template-columns:1fr 270px;gap:10px 30px}.translator h2{font-size:24px;margin-bottom:7px}.translator p{font-size:13px;color:var(--muted);margin-top:0}.search{font-size:10px;color:var(--muted)}input[type=search],input[type=text],select{padding:10px 12px;border:1px solid #b7aaa0;border-radius:6px;background:#fffdf7;color:var(--ink);width:100%;margin-top:5px}.translation-list{grid-column:1/-1}.translation-row{display:grid;grid-template-columns:1fr 30px 1fr 1.8fr;align-items:start;gap:12px;padding:15px 0;border-bottom:1px solid var(--line);font-size:12px}.translation-row strong{color:var(--green)}.translation-row small{color:var(--muted);font-size:11px}.translator #translations{grid-column:1/-1}details{border-bottom:1px solid var(--line);padding:15px 0}summary{cursor:pointer;font-weight:600}details p{color:var(--muted);font-size:13px}label.control{display:block;font-size:12px;margin-bottom:14px}.article-preview{background:#f4eee2;padding:24px;border-radius:8px}.article-preview h4{font-size:22px;margin:0 0 12px}.article-preview p{font-size:12px;color:var(--muted)}.cta{background:var(--lime);color:var(--green);padding:16px;border-radius:8px;font-size:13px;margin:14px 0}.file-layout{display:grid;grid-template-columns:210px 1fr;min-height:270px}.file-tree{padding:18px;background:#f4eee2}.file-tree button{border:0;background:transparent;display:block;padding:8px;width:100%;text-align:left;font:11px 'JetBrains Mono',monospace;overflow-wrap:anywhere}.file-tree button.selected{color:var(--green);background:#e8e2d4;border-radius:4px}.file-info{padding:24px;min-width:0}.checklist label{display:flex;align-items:start;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.checklist input{width:17px;height:17px;flex-shrink:0;margin-top:4px}.checklist strong{display:block;font-size:13px}.checklist small{display:block;color:var(--muted);font-size:12px}.step{padding:15px 0;border-bottom:1px solid var(--line)}.step h3{margin:0 0 9px;font-size:18px}.step p{margin:0;color:var(--muted);font-size:13px}.source{font-size:11px;color:var(--green);margin-top:25px;display:block}.island-demo{padding:20px;background:#e8e2d4;border-radius:10px;display:grid;gap:8px}.island-demo>div{background:#fffdf7;padding:14px;border-radius:5px;font-size:12px}.island-demo .live{background:var(--green);color:var(--paper);display:flex;justify-content:space-between;align-items:center}.live button{background:var(--lime);color:var(--green);border:0;padding:6px 13px;border-radius:5px}.url-display{padding:13px;background:#e8e2d4;color:var(--green);font:13px 'JetBrains Mono',monospace;margin:15px 0;border-radius:6px;overflow-wrap:anywhere}footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:10px;color:var(--muted);padding:25px 0;margin-top:45px}#toast{position:fixed;bottom:25px;right:25px;background:var(--green);color:var(--paper);border-radius:7px;padding:12px 20px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:10}#toast.show{opacity:1}.skip{position:fixed;top:-60px;left:20px;z-index:20;padding:10px;background:var(--paper)}.skip:focus{top:10px}@media(min-width:1500px){main{padding:0 70px}.intro{padding-top:70px}}@media(max-width:1100px){aside{width:214px;padding:28px 15px}.shell{margin-left:214px}main{padding:0 30px}header{padding:0 30px}.intro{gap:25px}.hero-diagram{padding:18px}.small-note{font-size:10px}.lab-grid{grid-template-columns:1fr}}@media(max-width:760px){aside{position:relative;width:100%;padding:20px 20px 0;display:block}.brand{font-size:25px}.brand small{font-size:8px}.brand-icon{height:36px;width:34px;font-size:29px}.course-label,.sidebar-foot{display:none}nav{margin-top:20px;flex-direction:row;overflow:auto;padding-bottom:14px}nav button{white-space:nowrap;padding:9px;font-size:12px}.shell{margin-left:0}header{padding:0 20px;height:55px;font-size:10px}main{padding:0 20px}.intro{grid-template-columns:1fr;padding:32px 0;gap:28px}.hero-diagram{justify-self:start;max-width:none;transform:rotate(0);padding:20px}.hero-copy h1{font-size:44px}.hero-copy p{font-size:14px}.diagram-top{margin-bottom:15px}.bridge-row{padding:7px 14px}.diagram-bottom{margin-top:13px}.compare{grid-template-columns:1fr}.compare>div+div{border-left:0;border-top:1px solid var(--line)}.lesson-top h2{font-size:25px}.duration{white-space:nowrap;margin-left:12px}.translator{grid-template-columns:1fr}.translation-row{grid-template-columns:1fr 20px 1fr}.translation-row small{grid-column:1/-1}.file-layout{grid-template-columns:1fr}.file-tree{display:flex;overflow:auto}.file-tree button{width:auto;white-space:nowrap}.lesson-actions button{font-size:11px;padding:11px;gap:6px}footer{gap:15px;flex-direction:column}.lab-header{gap:12px}.lab-body{padding:16px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* Legibility adjustments after visual review. */
.bridge-row i{color:#006876}.progress-track div{transition:none}.brand small,.course-label,.sidebar-foot,.sidebar-foot small,.text-button,.small-note,.diagram-bottom,.lesson-number,.lab-header span,.code-label,.mini-tag,.search,.source,footer{font-size:11px}.brand small{letter-spacing:.5px}h1 em:after{display:none}

/* Chris Latham: Modern Archive brand roles. */
:root{--primary:#b60059;--secondary:#006876;--tertiary:#b0223e;--surface-highest:#e8e2d4;--accent-teal:#03919f;--accent-magenta:#e8026f;--font-label:'JetBrains Mono',monospace}
::selection{background:var(--primary);color:var(--paper)}
button,input,select{accent-color:var(--primary);caret-color:var(--primary)}
:focus-visible{outline-color:var(--primary)}
.primary{background:var(--primary)}.primary:hover{background:var(--accent-magenta)}
nav button.active,.tabbar button.selected{background:var(--secondary);color:var(--paper)}
nav button.active{box-shadow:inset 3px 0 var(--accent-magenta)}
h1 em{color:var(--primary)}
.brand-icon{background:var(--primary)}
.progress-track div{background:var(--primary)}
.cta{background:var(--primary);color:var(--paper)}
.spark,.lesson-number{color:var(--tertiary)}
.course-label,.lesson-number,.duration,.lab-header span,.code-label,.mini-tag,.diagram-bottom,.small-note,.source,.brand small,.search,.sidebar-foot small,nav .num,footer{font-family:var(--font-label)}
.note,.small-note,.translation-row small,.checklist small,.step p{letter-spacing:.01em}
.breadcrumb{color:var(--secondary)}
.diagram-bottom{color:var(--secondary)}
.file-tree button.selected{color:var(--primary);font-weight:600}
.live button{background:var(--primary);color:var(--paper)}
.live button:hover{background:var(--accent-magenta)}
.bridge-row{border-bottom:2px solid var(--accent-teal)}
.code{font-family:ui-monospace,SFMono-Regular,monospace}
.primary:hover,.live button:hover{background:var(--tertiary);box-shadow:0 0 0 2px var(--accent-magenta)}
.progress-track div{transition:none}
header{font-size:12px}
@media(max-width:760px){header{font-size:11px}}

/* chrismbs.link: author credit and THE LATHAM links. */
.header-links{display:flex;gap:18px;align-items:center;white-space:nowrap}
header .latham-link{color:var(--primary)}
.byline,.hero-copy .byline{font-family:var(--font-label);font-size:11px;max-width:420px;color:var(--muted);margin:18px 0 0}
.byline a{color:var(--primary);font-weight:600}
.latham-cta{margin-top:45px;padding:28px 30px;background:var(--primary);color:var(--paper);border-radius:12px;display:flex;justify-content:space-between;align-items:center;gap:24px}
.latham-cta h2{margin:0 0 8px;font-size:24px}
.latham-cta p{margin:0;font-size:13px;opacity:.9}
.latham-btn{background:var(--paper);color:var(--primary);text-decoration:none;font-weight:600;font-size:13px;padding:12px 19px;border-radius:6px;white-space:nowrap}
.latham-btn:hover{background:var(--surface-highest)}
footer a{color:var(--primary)}
@media(max-width:760px){.header-links{gap:12px}.latham-cta{flex-direction:column;align-items:flex-start;padding:22px 20px}}