:root{--paper:#f6f3ec;--ink:#20261f;--muted:#697165;--accent:#d8ff57;--line:#d8dcd0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-size:16px}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #547419;outline-offset:4px}[hidden]{display:none!important}.skip{position:fixed;top:-100px;z-index:10;background:var(--accent);padding:16px}.skip:focus{top:0}.topbar{height:80px;padding:0 4vw;display:flex;justify-content:space-between;align-items:center;background:#20261f;color:white}.brand{font-size:26px;font-weight:800;text-decoration:none;letter-spacing:-1px}.brand span{color:var(--accent)}.topbar>a:last-child{font-size:14px}.layout{max-width:1500px;margin:auto;display:grid;grid-template-columns:300px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;overflow:auto;border-right:1px solid var(--line);padding:32px 24px}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700}.sidebar h2{font-size:23px;line-height:1.2}.sidebar p{font-size:13px}.sidebar progress{appearance:none;display:block;width:100%;height:7px;border:0;background:#d8dcd0;border-radius:10px;margin-bottom:18px}.sidebar progress::-webkit-progress-bar{background:#d8dcd0;border-radius:10px}.sidebar progress::-webkit-progress-value{background:#58742c;border-radius:10px}.sidebar progress::-moz-progress-bar{background:#58742c}.storage-note{line-height:1.6;color:var(--muted)}#resume{font-weight:650;font-size:14px}.contents{margin-top:28px}.contents summary{cursor:pointer;font-weight:650}.search-label{display:block;font-size:12px;margin-top:20px}input[type=search]{margin:8px 0 16px;width:100%;padding:11px;background:#fffefb;border:1px solid var(--line);border-radius:8px}.contents nav{display:grid;gap:3px}.contents nav a{padding:9px 10px;font-size:13px;line-height:1.5;text-decoration:none;border-radius:6px}.contents nav a:hover,.contents nav a[aria-current]{background:#e7ecd9}.contents nav a.done:before{content:'✓ ';color:#4c6b20;font-weight:800}main{min-width:0;padding:48px clamp(24px,5vw,84px)}.reading-hero{padding-bottom:38px;border-bottom:1px solid var(--line);position:relative}.reading-hero h1{font-family:Georgia,serif;font-weight:400;font-size:clamp(40px,5vw,72px);line-height:1.03;letter-spacing:-2px;margin:26px 0}.reading-hero>p:not(.eyebrow){font-size:20px;color:var(--muted);max-width:550px;line-height:1.5}.hero-meta{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;margin-top:30px}.hero-meta>*{padding:8px 12px;border:1px solid var(--line);border-radius:24px}.route-art{display:flex;align-items:center;margin-top:38px;height:60px;background:linear-gradient(var(--line),var(--line)) center/100% 1px no-repeat;justify-content:space-between}.route-art i{display:block;width:18px;height:18px;background:var(--paper);border:2px solid var(--ink);border-radius:50%}.route-art i:first-child{width:52px;height:52px;background:var(--accent);box-shadow:0 0 0 8px #e8efda}.route-art i:last-child{border-radius:3px;transform:rotate(45deg)}.prose{font-size:17px;line-height:1.85;overflow-wrap:anywhere}.prose>h1:first-child{font-size:24px;margin-top:36px}.prose h1{font-size:32px}.prose h2{font-size:29px;line-height:1.3;margin:48px 0 22px;letter-spacing:-.5px}.prose h3{font-size:21px;margin-top:32px}.prose h4{font-size:18px}.prose [id]{scroll-margin-top:28px}.prose a{color:#436017}.prose blockquote{margin:24px 0;padding:12px 24px;border-left:3px solid #8aab45;background:#eaf0df;font-size:15px}.prose pre{padding:22px;background:#20261f;color:#ecf3e3;overflow-x:auto;border-radius:10px;font-size:13px;line-height:1.7;overflow-wrap:normal}.prose code{font-size:.88em;background:#e6e9df;padding:2px 5px;border-radius:4px}.prose pre code{background:none;padding:0}.prose table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;font-size:14px;line-height:1.6;margin:24px 0}.prose th,.prose td{border:1px solid var(--line);padding:12px 16px;min-width:110px;text-align:left}.prose th{background:#e6ebdc}.prose li{margin:8px 0}.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0}.unit-marker{margin-top:64px;color:#617b34;font-size:11px;letter-spacing:2px;font-weight:700}.unit-marker+h2,.unit-marker+h3{margin-top:12px}.completion{display:flex;gap:12px;align-items:center;background:#e7eddc;border:1px solid #c5d3ac;border-radius:10px;padding:14px 18px;font-size:13px;line-height:1.5;cursor:pointer}.completion input{width:20px;height:20px;flex-shrink:0;accent-color:#547419}footer{margin-top:64px;padding:28px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:24px;font-size:14px}@media(max-width:900px){.layout{grid-template-columns:240px minmax(0,1fr)}.sidebar{padding:24px 16px}main{padding:32px 24px}}@media(max-width:650px){.layout{display:block}.sidebar{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line);padding:24px}.sidebar-head{max-width:500px}.contents nav{max-height:230px;overflow:auto}.topbar{height:64px;padding:0 24px}.prose{font-size:16px}.reading-hero h1{font-size:44px}.prose h2{font-size:26px}}@media(prefers-reduced-motion:no-preference){a{transition:background .15s ease}}@media print{.sidebar,.topbar,.completion,.skip,.route-art{display:none}.layout{display:block}main{padding:0}.prose pre{white-space:pre-wrap}.prose table{display:table;font-size:10px}.prose a{color:inherit}}
.lesson-video{margin:28px 0;padding:24px;border:1px solid var(--line);border-radius:12px;background:#ecf0e3}.lesson-video p{font-size:14px;line-height:1.65}.video-load{background:#20261f;color:#d8ff57;border:0;border-radius:8px;padding:14px 20px;cursor:pointer}.video-load:focus-visible{outline:3px solid #547419;outline-offset:4px}.video-player:has(iframe){width:100%;margin:16px 0}.video-player iframe{display:block;width:100%;height:clamp(200px,42vw,480px);border:0;border-radius:8px}.prose details{margin:20px 0;padding:14px 18px;border:1px solid var(--line);border-radius:8px}.prose summary{cursor:pointer;font-weight:600}.prose small{display:block;color:var(--muted);font-size:13px}