:root{--ink:#111213;--charcoal:#292a2b;--stone:#dededb;--paper:#f4f4f0;--white:#fff;--focus:#1266d4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:Arial,Helvetica,sans-serif}.skip-link{position:absolute;left:-9999px;top:0}.skip-link:focus{left:1rem;top:1rem;z-index:10;padding:.8rem 1rem;color:#fff;background:#111}a:focus-visible{outline:4px solid var(--focus);outline-offset:3px}.reader{width:min(1160px,calc(100% - 2rem));margin:1.2rem auto 4rem}.document-hero{padding:clamp(1.6rem,5vw,3.4rem);color:#fff;background:var(--ink);border-bottom:10px solid #777}.eyebrow{margin:0 0 .65rem;font-size:.75rem;font-weight:900;letter-spacing:.1em}.document-hero h1{max-width:900px;margin:0;font-family:"Arial Black",Impact,sans-serif;font-size:clamp(2.5rem,7vw,5rem);line-height:.96;letter-spacing:-.045em;text-transform:uppercase}.document-hero .byline{margin:1rem 0 0;color:#ddd;font-weight:700;line-height:1.5}.context{margin:1rem 0 1.5rem;padding:clamp(1rem,3vw,1.5rem);background:#fff;border:1px solid #bbb;border-left:8px solid var(--ink)}.context h2,.text-section h2{margin:0 0 .8rem;font-family:"Arial Black",Impact,sans-serif;font-size:clamp(1.25rem,3vw,1.75rem);line-height:1.05;text-transform:uppercase}.context p{max-width:780px;margin:.55rem 0;font-size:1.02rem;line-height:1.65}.context .key-point{font-weight:800}.text-section{margin:0 0 1.25rem;padding:clamp(1rem,3vw,1.8rem);background:#fff;border:1px solid #c8c8c5}.text-section>h2{padding-bottom:.7rem;border-bottom:4px solid var(--ink)}.passage{display:grid;grid-template-columns:minmax(0,1fr) minmax(245px,320px);gap:clamp(1rem,3vw,2rem);padding:1.4rem 0;border-bottom:1px solid #ccc;align-items:start}.passage:last-child{padding-bottom:.2rem;border-bottom:0}.original{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.22rem,2vw,1.5rem);line-height:1.85}.original p{margin:0 0 1.1rem}.original p:last-child{margin-bottom:0}.original ul{margin:.3rem 0;padding-left:1.4rem}.original li{margin:0 0 .65rem;padding-left:.25rem}.highlight{padding:.08em .15em;background:#e1e1de;border-bottom:4px solid #111;box-decoration-break:clone;-webkit-box-decoration-break:clone;font-weight:700}.support{padding:1rem;background:#f8f8f5;border-left:7px solid var(--ink);box-shadow:5px 5px 0 #ccc}.support h3{margin:0 0 .45rem;font-size:.72rem;letter-spacing:.1em}.support p,.support li{font-size:.94rem;line-height:1.55}.support p{margin:.35rem 0}.support dl{margin:.4rem 0}.support dt{margin-top:.65rem;font-size:.72rem;font-weight:950;letter-spacing:.06em;text-transform:uppercase}.support dd{margin:.2rem 0 0;line-height:1.5}.notice{margin:.8rem 0 0;padding-top:.75rem;border-top:1px solid #aaa}.document-end{padding:1.2rem;background:var(--stone);font-weight:750;line-height:1.55}.document-end a{color:var(--ink);font-weight:950}@media(max-width:760px){.passage{grid-template-columns:1fr}.support{box-shadow:none}.original{font-size:1.22rem;line-height:1.78}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* AP-wide course shell shared by the first Unit 1 document readers. */
:root{--course-blue:#182838;--course-red:#9f2636}
.course-shell{background:#fff;border-top:8px solid var(--course-red);border-bottom:1px solid #c6cbd0}
.course-shell-inner{width:min(1240px,calc(100% - 2rem));min-height:74px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:2rem}
.course-brand{display:inline-flex;align-items:center;gap:.75rem;color:var(--course-blue);text-decoration:none;line-height:1.05}
.course-brand img{width:44px;height:44px;border-radius:9px}
.course-brand span{display:grid}
.course-brand strong{font-family:"Arial Black",Impact,sans-serif;font-size:1rem}
.course-brand small{margin-top:.25rem;font-size:.67rem;font-weight:800;letter-spacing:.04em}
.course-nav{display:flex;align-items:center;gap:.15rem}
.course-nav a{min-height:48px;padding:.75rem .8rem;display:inline-flex;align-items:center;color:var(--course-blue);font-size:.78rem;font-weight:900;text-decoration:none;text-transform:uppercase}
.course-nav a:hover{color:#fff;background:var(--course-blue)}

@media(max-width:760px){.course-shell-inner{padding:.65rem 0;align-items:flex-start;flex-direction:column;gap:.35rem}.course-nav{width:100%;flex-wrap:wrap}.course-nav a{min-height:42px;padding:.55rem .65rem}.course-brand small{font-size:.62rem}}