/* Atlas notes and the long-form reading surface. Existing palette is retained. */
.notes-hero { padding-block: 35px 70px; }
.notes-hero-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 80px; align-items: start; margin-top: 38px; }
.notes-hero h1 { font-size: clamp(62px, 6.4vw, 99px); letter-spacing: -.065em; line-height: 1.06; }
.notes-hero h1 em::after, .essay-hero h1 em::after { display: none; }
.notes-intro { font-size: 24px; line-height: 1.5; max-width: 650px; margin-top: 32px; }
.notes-description { font-size: 18px; line-height: 1.7; color: var(--muted); max-width: 620px; margin-top: 22px; }
.featured-note { border: 1px solid #6e7b5e; display: block; background: #222b20; transition: background .2s; }
.featured-note:hover { background: #2b3625; }
.feature-top { display: flex; justify-content: space-between; align-items: start; gap: 25px; padding: 24px 28px 0; }
.feature-top > span:last-child { font-size: 25px; line-height: 1; color: var(--lime); }
.feature-boundary { height: 135px; display: flex; align-items: center; justify-content: center; gap: 9px; position: relative; margin: 12px 28px 7px; isolation: isolate; }
.feature-boundary::before { content: ''; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: #657450; z-index: -1; }
.feature-boundary > span { color: var(--lime); background: #222b20; font-size: 72px; line-height: 1; letter-spacing: -.065em; padding-right: 26px; }
.feature-boundary i { height: 105px; width: 1px; background: #8a9c68; }
.feature-copy { padding: 12px 28px 27px; }
.feature-copy h2 { font-size: 55px; }
.feature-copy em { color: var(--lime); }
.feature-copy > p { font-size: 18px; line-height: 1.6; color: var(--muted); margin-top: 20px; }
.feature-copy > div { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding-top: 23px; border-top: 1px solid #58654d; margin-top: 27px; font-size: 14px; }
.feature-copy > div > span:first-child { color: var(--muted); font-size: 13px; }
.notes-sequence { background: var(--paper); color: var(--dark); padding-block: 73px; }
.sequence-heading { display: grid; grid-template-columns: 1.15fr 1fr; align-items: end; gap: 95px; margin-block: 40px 44px; }
.sequence-heading h2 { font-size: 59px; }
.sequence-heading p { max-width: 460px; font-size: 18px; line-height: 1.65; color: #535d51; }
.sequence-list { border-top: 1px solid #aeb6a5; }
.sequence-note { display: grid; grid-template-columns: 55px 1.2fr 1fr; align-items: start; gap: 32px; border-bottom: 1px solid #aeb6a5; padding: 35px 0; transition: background .2s; }
.sequence-note:hover { background: #dfe5d3; }
.sequence-number { font-size: 15px; color: #59654f; }
.sequence-title .kicker { color: #59654f; font-size: 12px; }
.sequence-title h3 { font-size: 33px; line-height: 1.15; margin-top: 17px; letter-spacing: -.04em; }
.sequence-title > p { font-size: 18px; line-height: 1.6; margin-top: 19px; max-width: 460px; }
.sequence-description > p { font-size: 17px; line-height: 1.7; color: #535d51; }
.sequence-description > span { display: block; margin-top: 23px; font-size: 14px; }
.local-note .sequence-number { color: var(--dark); background: var(--lime); padding: 8px; margin-top: -8px; text-align: center; }
.notes-to-work, .essay-architecture { display: flex; justify-content: space-between; align-items: center; gap: 75px; padding-block: 70px 76px; }
.notes-to-work > div, .essay-architecture > div { max-width: 760px; }
.notes-to-work h2, .essay-architecture h2 { font-size: 54px; margin-top: 26px; }
.notes-to-work h2 em, .essay-architecture h2 em { color: var(--lime); }
.notes-to-work p, .essay-architecture p { font-size: 18px; line-height: 1.65; color: var(--muted); max-width: 650px; margin-top: 23px; }
.reading-progress { position: fixed; left: 0; top: 0; right: 0; height: 3px; z-index: 50; pointer-events: none; }
.reading-progress > span { display: block; width: 100%; height: 100%; background: #9fb65f; transform: scaleX(0); transform-origin: left; }
.essay-hero { padding-block: 18px 55px; }
.back-link { display: inline-block; font-size: 14px; color: var(--muted); margin-bottom: 36px; }
.back-link:hover { color: var(--lime); }
.essay-hero h1 { font-size: clamp(83px, 8vw, 126px); margin-top: 30px; line-height: 1; letter-spacing: -.065em; }
.essay-subtitle { font-size: 29px; line-height: 1.45; max-width: 790px; margin-top: 28px; }
.essay-context { font-size: 16px; line-height: 1.62; color: var(--muted); margin-top: 24px; }
.essay-context a { color: var(--white); text-decoration: underline; text-underline-offset: 5px; }
.essay-meta { display: flex; gap: 35px; align-items: baseline; font-size: 14px; color: var(--muted); border-top: 1px solid var(--line); margin-top: 37px; padding-top: 23px; }
.reading-surface { background: #f6f6ee; color: var(--dark); }
.reading-layout { display: grid; grid-template-columns: 235px minmax(0, 760px); gap: 85px; padding-block: 66px 72px; align-items: start; justify-content: start; }
.reading-sidebar { position: sticky; top: 30px; }
.contents { border-top: 1px solid #b8c1aa; }
.contents summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; list-style: none; padding-top: 18px; font-size: 14px; font-weight: 500; }
.contents summary::-webkit-details-marker { display: none; }
.contents summary > span { font-size: 21px; line-height: 1; font-weight: 300; }
.contents[open] summary > span { transform: rotate(45deg); }
.contents ol { list-style: none; padding: 0 14px 0 0; margin: 20px 0 0; max-height: calc(100vh - 165px); overflow-y: auto; scrollbar-width: thin; scrollbar-color: #9ba98a transparent; }
.contents li { margin: 0; }
.contents a { display: block; font-size: 13px; line-height: 1.55; color: #59634f; padding: 8px 10px 8px 15px; border-left: 2px solid #d8ddce; }
.contents a:hover { color: var(--dark); background: #e9eedf; }
.contents a[aria-current=location] { color: var(--dark); border-left-color: #718b3e; background: #e4ebd6; }
.source-link { display: inline-block; font-size: 12px; color: #59634f; margin-top: 22px; }
.essay-body { min-width: 0; font-family: Georgia, 'Times New Roman', serif; font-size: 20px; line-height: 1.72; color: #2e352d; }
.essay-body p { margin-top: 23px; }
.essay-body > p:first-child { margin-top: 0; font-size: 23px; line-height: 1.62; color: var(--dark); }
.essay-body h2 { font: 450 38px/1.2 var(--sans); letter-spacing: -.04em; margin: 57px 0 25px; color: var(--dark); scroll-margin-top: 40px; }
.essay-body h3 { font: 450 29px/1.25 var(--sans); letter-spacing: -.03em; margin: 37px 0 21px; color: var(--dark); scroll-margin-top: 40px; }
.essay-main-column { min-width: 0; }
.contents ol ol { max-height: none; overflow: visible; margin: 0; padding: 0; }
.contents ol ol a { font-size: 12.5px; padding-left: 29px; }
.sequence-pagination { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; margin: 36px auto 0; max-width: 760px; }
.sequence-pagination > a { border-top: 1px solid #b8c1aa; padding: 21px 9px 12px; display: flex; flex-direction: column; gap: 13px; transition: background .2s; }
.sequence-pagination > a:hover { background: #e9eedf; }
.sequence-pagination > a:last-child { text-align: right; }
.sequence-pagination span { font: 13px/1.6 var(--sans); color: #59634f; }
.sequence-pagination strong { font: 450 23px/1.25 var(--sans); letter-spacing: -.025em; color: var(--dark); }
.essay-body p[id] { scroll-margin-top: 40px; }
.essay-body ul, .essay-body ol { margin: 24px 0; padding-left: 28px; }
.essay-body li { margin-block: 11px; padding-left: 5px; }
.essay-body strong, .essay-body b { font-weight: 600; }
.essay-body blockquote { border-left: 3px solid #9fb65f; margin: 30px 0; padding-left: 25px; }
.essay-end { display: flex; justify-content: space-between; gap: 25px; border-top: 1px solid #b8c1aa; margin-top: 45px; padding-top: 23px; font: 13px/1.7 var(--sans); color: #59634f; }
.essay-related { background: var(--paper); color: var(--dark); padding-block: 55px 65px; }
.related-notes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 35px; margin-top: 35px; }
.related-notes-grid > a { border-top: 1px solid #aeb6a5; padding-top: 23px; display: flex; flex-direction: column; align-items: start; }
.related-notes-grid .kicker { font-size: 11px; letter-spacing: .7px; color: #59634f; }
.related-notes-grid h3 { font-size: 29px; line-height: 1.15; margin-top: 24px; letter-spacing: -.035em; }
.related-notes-grid p { font-size: 17px; line-height: 1.62; color: #535d51; margin-top: 19px; margin-bottom: 26px; }
.continuation-link { font-size: 13px; margin-top: auto; border-bottom: 1px solid currentColor; padding-bottom: 5px; }
@media (max-width: 1100px) {
  .notes-hero-grid { gap: 50px; }
  .notes-hero h1 { font-size: 77px; }
  .sequence-heading { gap: 60px; }
  .sequence-note { grid-template-columns: 45px 1.1fr 1fr; gap: 25px; }
  .sequence-title h3 { font-size: 30px; }
  .reading-layout { grid-template-columns: 210px minmax(0, 720px); gap: 50px; }
  .notes-to-work, .essay-architecture { gap: 50px; }
  .notes-to-work h2, .essay-architecture h2 { font-size: 47px; }
}
@media (max-width: 900px) {
  .notes-hero-grid { grid-template-columns: 1.1fr 1fr; gap: 35px; }
  .notes-hero h1 { font-size: 65px; }
  .notes-intro { font-size: 22px; }
  .notes-description { font-size: 17px; }
  .feature-top, .feature-copy { padding-inline: 23px; }
  .feature-copy h2 { font-size: 46px; }
  .feature-copy > p { font-size: 17px; }
  .feature-copy > div { flex-wrap: wrap; gap: 12px; }
  .sequence-heading { gap: 40px; }
  .sequence-heading h2 { font-size: 49px; }
  .sequence-note { grid-template-columns: 35px 1fr; gap: 22px; }
  .sequence-description { grid-column: 2; max-width: 650px; }
  .sequence-title > p { max-width: 650px; }
  .notes-to-work, .essay-architecture { flex-direction: column; align-items: start; gap: 30px; }
  .reading-layout { display: block; padding-block: 35px 55px; }
  .reading-sidebar { position: static; max-width: 740px; margin: 0 auto 40px; }
  .contents summary { padding-block: 18px; }
  .contents ol { max-height: none; overflow: visible; margin-top: 4px; padding-bottom: 15px; }
  .contents a { font-size: 15px; padding-block: 10px; }
  .source-link { margin-top: 14px; font-size: 13px; }
  .essay-body { max-width: 740px; margin-inline: auto; }
  .sequence-pagination { max-width: 740px; }
  .essay-hero h1 { font-size: 100px; }
  .essay-subtitle { font-size: 27px; }
  .related-notes-grid { gap: 25px; }
  .related-notes-grid h3 { font-size: 25px; }
}
@media (max-width: 600px) {
  .study-bar > a { max-width: 175px; text-align: left; }
  .study-bar > a:last-child { max-width: 125px; text-align: right; }
  .notes-hero { padding-block: 24px 44px; }
  .notes-hero-grid { display: block; margin-top: 28px; }
  .notes-hero h1 { font-size: clamp(49px, 12.7vw, 70px); line-height: 1.07; }
  .notes-intro { font-size: 23px; margin-top: 27px; }
  .notes-description { font-size: 18px; line-height: 1.7; margin-top: 22px; }
  .featured-note { margin-top: 32px; }
  .feature-top { padding-top: 23px; }
  .feature-copy { padding-bottom: 24px; }
  .feature-copy h2 { font-size: 52px; }
  .feature-copy > p { font-size: 18px; }
  .feature-boundary { height: 115px; margin-top: 8px; }
  .feature-boundary i { height: 90px; }
  .feature-boundary > span { font-size: 63px; }
  .feature-copy > div { font-size: 15px; justify-content: space-between; }
  .feature-copy > div > span:first-child { font-size: 14px; }
  .notes-sequence { padding-block: 44px; }
  .sequence-heading { display: block; margin-block: 29px 31px; }
  .sequence-heading h2 { font-size: 43px; }
  .sequence-heading p { font-size: 18px; margin-top: 24px; max-width: 100%; }
  .sequence-note { grid-template-columns: 25px 1fr; gap: 16px; padding-block: 28px; }
  .sequence-number { font-size: 13px; }
  .sequence-title .kicker { font-size: 11px; letter-spacing: .7px; }
  .sequence-title h3 { font-size: 29px; margin-top: 17px; }
  .sequence-title > p { font-size: 18px; line-height: 1.6; margin-top: 17px; }
  .sequence-description > p { font-size: 17px; }
  .sequence-description > span { font-size: 14px; line-height: 1.6; margin-top: 20px; }
  .local-note .sequence-number { padding: 4px; margin-top: -4px; margin-left: -4px; }
  .notes-to-work, .essay-architecture { padding-block: 44px 49px; gap: 27px; }
  .notes-to-work h2, .essay-architecture h2 { font-size: 40px; margin-top: 23px; }
  .notes-to-work p, .essay-architecture p { font-size: 18px; }
  .notes-to-work .kicker, .essay-architecture .kicker { line-height: 1.62; }
  .essay-hero { padding-block: 12px 35px; }
  .back-link { margin-bottom: 29px; font-size: 15px; }
  .essay-hero h1 { font-size: clamp(73px, 19vw, 103px); margin-top: 28px; }
  .essay-ai-alignment-begins-too-high .essay-hero h1 { font-size: clamp(54px, 14.2vw, 79px); }
  .essay-the-models-self-world .essay-hero h1,
  .essay-the-projection-error .essay-hero h1 { font-size: clamp(60px, 15.7vw, 87px); }
  .essay-subtitle { font-size: 25px; line-height: 1.45; margin-top: 24px; }
  .essay-meta { font-size: 13px; gap: 14px 25px; margin-top: 28px; padding-top: 20px; flex-wrap: wrap; }
  .reading-layout { padding-block: 23px 44px; }
  .reading-sidebar { margin-bottom: 33px; }
  .contents summary { font-size: 16px; padding-block: 17px; }
  .contents a { font-size: 15px; line-height: 1.58; }
  .contents ol ol a { font-size: 14px; padding-left: 28px; }
  .source-link { font-size: 13px; }
  .essay-body { font-size: 19px; line-height: 1.72; }
  .essay-body > p:first-child { font-size: 21px; line-height: 1.65; }
  .essay-body p { margin-top: 23px; }
  .essay-body h2 { font-size: 31px; line-height: 1.2; margin-top: 43px; margin-bottom: 24px; }
  .essay-body h3 { font-size: 26px; line-height: 1.25; margin-top: 32px; }
  .sequence-pagination { grid-template-columns: 1fr; gap: 20px; margin-top: 29px; }
  .sequence-pagination > a:last-child { text-align: left; }
  .sequence-pagination strong { font-size: 24px; }
  .essay-body ul, .essay-body ol { padding-left: 23px; }
  .essay-body li { padding-left: 2px; }
  .essay-end { font-size: 12px; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
  .essay-related { padding-block: 42px 45px; }
  .related-notes-grid { grid-template-columns: 1fr; gap: 30px; margin-top: 29px; }
  .related-notes-grid h3 { font-size: 29px; margin-top: 21px; }
  .related-notes-grid p { font-size: 17px; margin-bottom: 21px; }
  .continuation-link { font-size: 14px; }
}
@media print {
  body { background: white; color: black; }
  .study-bar, header, footer, .reading-progress, .reading-sidebar, .essay-related, .essay-architecture, .back-link, .essay-end, .sequence-pagination { display: none !important; }
  .frame { width: 100%; }
  .essay-hero { padding: 0 0 25px; }
  .essay-hero h1 { font-size: 48px; color: black; }
  .essay-hero h1 em { color: black; }
  .essay-subtitle { font-size: 20px; }
  .essay-meta { color: black; }
  .reading-surface { background: white; }
  .reading-layout { display: block; padding: 0; }
  .essay-body { max-width: 100%; color: black; font-size: 11pt; line-height: 1.6; }
  .essay-body h2 { break-after: avoid; font-size: 18pt; color: black; }
  .essay-body p { orphans: 3; widows: 3; }
}