.companion-main { max-width: 52rem; margin: 3.5rem auto 4.5rem; }
.companion-main h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); line-height: 1.1; margin: 1rem 0 1.5rem; }
.companion-main h2 { font: 400 1.5rem/1.3 Georgia, "Times New Roman", serif; letter-spacing: -.018em; text-transform: none; }
.companion-main h3 { font: 400 1.15rem/1.4 Georgia, "Times New Roman", serif; margin-top: 1.75rem; }
.companion-main p { line-height: 1.65; }
.companion-intro { font-size: 1.15rem; }
.download-section { border-top: 1px solid var(--line); margin-top: 2.25rem; padding-top: 1.5rem; }
.download-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; padding: 0; list-style: none; }
.download-format { display: block; color: var(--muted); font-size: .875rem; }
.download-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: 1.5rem; }
.download-actions button { font: inherit; font-size: .9375rem; cursor: pointer; border: 1px solid var(--ink); background: var(--ink); color: var(--paper, #f7f6f2); padding: .75rem 1rem; border-radius: 3px; }
.download-actions button:disabled { opacity: .6; cursor: wait; }
.download-actions #cancel-download { background: transparent; color: var(--ink); }
.download-actions [hidden] { display: none; }
#download-status { color: var(--muted); font-size: .875rem; }
details { margin-top: 1.5rem; }
summary { cursor: pointer; font-weight: 600; }
pre { overflow-x: auto; padding: 1rem; background: rgba(0,0,0,.035); font-size: .8125rem; line-height: 1.65; }
.digest { overflow-wrap: anywhere; font-size: .875rem; }
.companion-main a:focus-visible, .companion-main button:focus-visible, summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
@media (max-width: 560px) { .download-list { grid-template-columns: 1fr; } .companion-main { margin-top: 2rem; } }