:root{--night:#0b1020;--paper:#f5f1e8;--ink:#18251f;--gold:#d9bd80;--green:#244939;--muted:#4c5b53;--line:#c8cfc4}*{box-sizing:border-box}html{scroll-behavior:auto}body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.75 Georgia,'Times New Roman',serif}a{color:var(--green);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible,main:focus-visible{outline:3px solid #a66d16;outline-offset:5px}p{margin:0 0 1.1em}h1,h2,h3,p,a,td,th{overflow-wrap:anywhere}h1,h2,h3{font-weight:400;line-height:1.16;margin:0 0 .65em}h1{font-size:clamp(48px,6.8vw,89px);letter-spacing:-.045em;max-width:1100px}h2{font-size:clamp(29px,3.2vw,42px);letter-spacing:-.025em}h3{font-size:25px}.skip{position:absolute;left:15px;top:-100px;background:white;color:var(--ink);padding:12px;z-index:5}.skip:focus{top:15px}.review{background:#070b15;color:#c9cbd4;padding:8px 20px;text-align:center;font:13px/1.6 system-ui,sans-serif}header{padding:22px 6vw;background:#0d1222;color:#f3ecdd;display:flex;gap:24px;align-items:center;justify-content:space-between;border-bottom:1px solid #d9bd803d}.wordmark{display:flex;align-items:center;gap:13px;font:14px/1.5 system-ui,sans-serif;letter-spacing:.12em}.wordmark small{display:block;color:#c6bfaf;font-size:11px;letter-spacing:.08em}header nav{display:flex;gap:23px;flex-wrap:wrap;font:14px/1.6 system-ui,sans-serif}header nav a{color:#f3ecdd;text-decoration:none;padding:7px 0}.hero{background:radial-gradient(ellipse at 88% 10%,#37304880,transparent 50%),radial-gradient(ellipse at 12% 70%,#253d4650,transparent 55%),var(--night);color:#f3ecdd;padding:65px max(6vw,calc((100vw - 1320px)/2)) 55px}.hero>p:not(.eyebrow){max-width:880px}.eyebrow{font:12px/1.7 system-ui,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:#665432;margin:0 0 18px}.hero .eyebrow{color:var(--gold)}.subtitle{font-size:30px;color:#e4cf9d;line-height:1.35}.hero .free{font:15px/1.8 system-ui,sans-serif;color:#c7cecb;max-width:900px;margin:26px 0 0}.actions{display:flex;gap:15px;align-items:center;flex-wrap:wrap;margin-top:27px}.button{display:inline-block;text-decoration:none;font:15px/1.5 system-ui,sans-serif;padding:14px 21px;min-height:48px;border:1px solid transparent}.gold{color:#141929;background:#dfc68e;border-color:#dfc68e}.quiet{color:#eee6d5;background:transparent;border-color:#b9ae92}.actions>a:not(.button){color:#e4c990;font:15px/1.6 system-ui,sans-serif;padding:12px 0}.green{background:var(--green);color:white}.paper{max-width:1320px;margin:auto;padding:0 6vw}.paper>section{padding:58px 0;border-bottom:1px solid var(--line);scroll-margin-top:20px}.paper>.premise{max-width:900px;padding-top:35px;padding-bottom:30px;border:0}.first-route{display:grid;grid-template-columns:1fr 1.15fr;gap:55px;border-top:1px solid var(--line)}ol{margin:0;padding-left:26px}li{padding:0 0 17px 9px}li::marker{font-family:system-ui,sans-serif;color:#536443}.small{font:14px/1.7 system-ui,sans-serif;color:var(--muted)}.notice{background:#e5e9de;border-left:4px solid #61745c;padding:20px 24px;font-size:17px;line-height:1.8;margin-top:20px}.prose{max-width:840px;margin:auto}.site-action{font:15px/1.8 system-ui,sans-serif;margin-top:22px}.site-action a{display:inline-block;padding:6px 0}.table-wrap{width:100%;overflow-x:auto}table{width:100%;border-collapse:collapse;margin:24px 0 18px;min-width:580px}th,td{border-bottom:1px solid #c7cdbf;text-align:left;vertical-align:top;padding:17px 19px 17px 0;font-size:17px;line-height:1.7}thead th{font:13px/1.6 system-ui,sans-serif;letter-spacing:.07em;text-transform:uppercase;color:#51614f;border-top:1px solid #bac5b3}th[scope=row]{font-weight:400;min-width:170px}#views td{width:36%}.lesson-index{display:grid;grid-template-columns:1fr 1fr;gap:0 30px;font:15px/1.65 system-ui,sans-serif;margin:25px 0 35px}.lesson-index a{display:block;padding:10px 0;border-bottom:1px solid #d0d4c8}.lessons details{border-top:1px solid #bdc8b4}.lessons details:last-child{border-bottom:1px solid #bdc8b4}.lessons summary{display:flex;align-items:baseline;gap:22px;cursor:pointer;padding:22px 16px 22px 0;list-style:none;font-size:25px;line-height:1.35}.lessons summary::-webkit-details-marker{display:none}.lessons summary::after{content:'+';font:26px/1 system-ui,sans-serif;margin-left:auto;color:#4b634a;flex:none}.lessons details[open]>summary::after{content:'−'}.number{font:14px/1.6 system-ui,sans-serif;color:#596d4d;flex:none}.lesson-body{padding:0 3vw 28px 48px;max-width:1000px}.aim{font:15px/1.8 system-ui,sans-serif;color:#53614d}.practice{background:#e8e6dc;padding:23px 27px;margin:27px 0 4px;font-size:17px}.practice p:last-child{margin-bottom:0}.marker-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px;margin:32px 0 42px}.marker-grid p{font-size:16px;line-height:1.75}.marker-grid h3{font-size:23px}.marker{display:grid;place-items:center;width:58px;height:58px;border-radius:50%;border:1px solid #76806f;background:radial-gradient(circle at 35% 28%,#e0d8c7,#9b9f8f 58%,#6c776a);color:#17291f;font:27px/1 system-ui,sans-serif;box-shadow:inset -3px -4px 8px #243a2d35;margin-bottom:17px}.future{background:#e9e8df;padding:35px!important;margin-top:30px;border:1px solid #c8cebf!important}.future p{max-width:970px}.ending{border-bottom:0!important}footer{background:var(--night);color:#bfc3d0;padding:30px 6vw;font:14px/1.7 system-ui,sans-serif}footer p{margin-bottom:8px}footer a{color:var(--gold);display:inline-block;margin-top:10px}@media(min-width:1550px){.paper{padding-left:80px;padding-right:80px}}@media(max-width:950px){header{align-items:flex-start;flex-direction:column;gap:14px}.first-route{grid-template-columns:1fr;gap:25px}.marker-grid{grid-template-columns:1fr 1fr}.lesson-index{grid-template-columns:1fr}.hero{padding-top:45px}.paper>section{padding-top:43px;padding-bottom:43px}.lesson-body{padding-left:35px}}@media(max-width:560px){body{font-size:17px}.review{font-size:12px}.wordmark{font-size:12px}.wordmark small{font-size:10px}header nav{font-size:13px;gap:17px}.subtitle{font-size:25px}.actions{align-items:stretch;flex-direction:column}.actions .button{width:100%;text-align:center}.hero h1{font-size:48px}.lesson-body{padding-left:0;padding-right:0}.lessons summary{font-size:22px;gap:13px}.practice,.notice{padding:19px}.future{padding:25px!important}.marker-grid{gap:18px}.marker-grid h3{font-size:21px}.paper>.premise{padding-top:27px}.site-action a{margin-right:12px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}@media print{.review,header nav,.actions,.lesson-index{display:none}.hero,footer{background:white;color:black}.hero .subtitle,.hero .free{color:black}.paper,.hero{padding-left:0;padding-right:0}.first-route{display:block}.lesson-body{display:block}.lessons details:not([open])>.lesson-body{display:block}table{min-width:0}.paper>section{padding-top:25px;padding-bottom:25px}.future,.practice,.notice{background:white}.marker{box-shadow:none;background:#eee}a{color:black}}

.table-wrap:focus-visible{outline:3px solid #a66d16;outline-offset:5px}

@media(max-width:560px){.hero h1{font-size:clamp(31px,8.7vw,48px)}}