@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/fonts/inter-latin-var.woff2") format("woff2");
}

:root {
  color-scheme: dark;
  --bg: #030609;
  --surface: #080e13;
  --text: #edf3f5;
  --soft: #c8d1d5;
  --muted: #96a5ac;
  --line: rgba(203, 218, 223, .15);
  --green: #66bc92;
  --content: 1160px;
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; scroll-padding-top: 104px; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; -webkit-font-smoothing: antialiased; }
::selection { color: var(--text); background: #254b39; }
a { color: inherit; text-underline-offset: 4px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--green); outline-offset: 6px; border-radius: 2px; }
.skip-link { position: fixed; top: 10px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--text); color: var(--bg); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 20; min-height: 76px; padding: 14px clamp(22px, 4vw, 56px); display: flex; align-items: center; justify-content: space-between; gap: 28px; background: rgba(3, 6, 9, .96); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-size: 14px; line-height: 1.3; font-weight: 650; }
.brand img { display: block; width: 40px; height: 40px; flex-shrink: 0; }
.site-links { display: flex; align-items: center; gap: 27px; font-size: 13px; color: var(--muted); }
.site-links a { text-decoration: none; padding: 8px 0; }
.site-links a:hover, .site-links .current { color: var(--text); }
.site-links .current { border-bottom: 1px solid var(--green); }
.mobile-contact { display: none; }

main, .site-footer { width: min(var(--content), calc(100% - 96px)); margin-inline: auto; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 64px; align-items: center; padding: 92px 0 72px; border-bottom: 1px solid var(--line); }
.eyebrow, .section-number, .contents-label { margin: 0; color: var(--green); font-size: 10px; font-weight: 650; line-height: 1.5; text-transform: uppercase; letter-spacing: .17em; }
h1 { margin: 25px 0 27px; font-size: clamp(46px, 5.3vw, 72px); line-height: 1.07; font-weight: 520; letter-spacing: -.052em; }
h1 span { color: var(--green); }
.lead { max-width: 530px; margin: 0; color: var(--soft); font-size: 18px; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 48px; padding: 12px 18px; font-size: 13px; line-height: 1.5; text-decoration: none; border: 1px solid var(--green); border-radius: 3px; transition: background 160ms ease; }
.primary { background: var(--green); color: #07110c; font-weight: 620; }
.primary:hover { background: #80caa7; }
.text-link { display: inline-flex; align-items: center; gap: 14px; padding-block: 12px; color: var(--soft); text-decoration: none; font-size: 13px; }
.text-link:hover { color: var(--green); }
.edition { display: flex; flex-wrap: wrap; gap: 8px 12px; margin: 29px 0 0; color: var(--muted); font-size: 11px; }
.edition > span { color: #55666e; }
.hero-mark { text-align: center; align-self: center; }
.hero-mark img { display: block; width: 280px; height: 280px; }
.hero-mark p { margin: 25px 0 0; color: var(--muted); font-size: 10px; letter-spacing: .13em; text-transform: uppercase; }
.hero-mark p span { margin-inline: 7px; color: var(--green); }

.reading-layout { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 85px; padding-top: 65px; }
.contents { align-self: start; position: sticky; top: 116px; padding-right: 24px; }
.contents-label { color: var(--muted); font-size: 10px; }
.contents ol { list-style: none; padding: 0; margin: 22px 0 30px; }
.contents li { margin-bottom: 3px; }
.contents li a { display: grid; grid-template-columns: 21px minmax(0, 1fr); gap: 9px; padding: 8px 0; color: var(--muted); font-size: 12px; line-height: 1.65; text-decoration: none; }
.contents li a span { color: #657a83; font-size: 10px; padding-top: 1px; }
.contents a:hover, .contents a:hover span { color: var(--green); }
.contents-home { display: flex; gap: 20px; align-items: center; border-top: 1px solid var(--line); padding-top: 20px; color: var(--soft); font-size: 12px; text-decoration: none; }
.letter { min-width: 0; max-width: 735px; padding-bottom: 24px; }
.chapter { padding: 60px 0 63px; border-bottom: 1px solid var(--line); }
.first-chapter { padding-top: 0; }
.section-number { margin-bottom: 20px; }
h2 { margin: 0 0 30px; font-size: clamp(28px, 3vw, 39px); line-height: 1.2; letter-spacing: -.037em; font-weight: 520; text-wrap: balance; }
.chapter p { margin: 0 0 22px; color: var(--soft); font-size: 16px; line-height: 1.85; }
.chapter .section-number { margin-bottom: 20px; color: var(--green); font-size: 10px; line-height: 1.5; }
.chapter .emphasis { color: var(--text); font-weight: 550; }
.chapter > :last-child { margin-bottom: 0; }
blockquote { margin: 32px 0; padding: 5px 0 5px 25px; border-left: 2px solid var(--green); }
.chapter blockquote p { margin: 0; font-size: 20px; line-height: 1.65; font-weight: 450; color: var(--text); letter-spacing: -.016em; }
.chapter .central-question { margin-top: 28px; margin-bottom: 31px; }
.chapter .central-question p { font-size: clamp(23px, 2.3vw, 28px); line-height: 1.5; letter-spacing: -.026em; }
.question-list { list-style: none; margin: 28px 0; padding: 0; border-top: 1px solid var(--line); }
.question-list li { padding: 17px 0 17px 24px; position: relative; border-bottom: 1px solid var(--line); font-size: 17px; line-height: 1.6; }
.question-list li::before { position: absolute; left: 0; content: "↳"; color: var(--green); }
.field-list { margin: 34px 0; }
.field { display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 22px; padding: 26px 0; border-top: 1px solid var(--line); }
.field:last-child { border-bottom: 1px solid var(--line); }
h3 { margin: 0; color: var(--text); font-size: 15px; font-weight: 600; line-height: 1.55; }
.field h3 { color: var(--green); font-size: 12px; padding-top: 4px; }
.field p { margin: 0; font-size: 15px; }
.work-list { list-style: none; padding: 0; margin: 28px 0 33px; counter-reset: work; }
.work-list li { position: relative; margin: 0; padding: 18px 0 18px 40px; border-top: 1px solid var(--line); color: var(--soft); font-size: 15px; line-height: 1.8; counter-increment: work; }
.work-list li:last-child { border-bottom: 1px solid var(--line); }
.work-list li::before { content: counter(work, decimal-leading-zero); position: absolute; left: 0; top: 22px; color: var(--green); font-size: 11px; }
.participation { margin-bottom: 32px; }
.participation h3 { margin-bottom: 16px; color: var(--green); font-size: 15px; }
.participation p:last-child { margin-bottom: 0; }
.chapter.closing { border-bottom: 0; padding-bottom: 74px; }
.chapter .closing-question { margin: 31px 0 26px; font-size: clamp(25px, 2.8vw, 34px); color: var(--text); line-height: 1.45; letter-spacing: -.035em; font-weight: 520; }
.contact-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 36px; max-width: 100%; margin-top: 18px; padding: 16px 0; color: var(--green); border-bottom: 1px solid var(--green); font-size: clamp(17px, 2vw, 22px); line-height: 1.5; text-decoration: none; }
.contact-link:hover { color: var(--text); border-color: var(--text); }
.site-footer { display: flex; align-items: flex-start; justify-content: space-between; gap: 28px; border-top: 1px solid var(--line); padding: 30px 0 40px; color: var(--muted); font-size: 11px; }
.site-footer p { margin: 0 0 6px; }
.site-footer .footer-name { color: var(--soft); font-size: 12px; font-weight: 550; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.site-footer a { display: inline-block; padding-block: 4px; text-decoration: none; }
.site-footer a:hover { color: var(--green); }

@media (max-width: 1050px) {
  .hero { grid-template-columns: minmax(0, 1fr) 210px; gap: 32px; }
  .hero-mark img { width: 210px; height: 210px; }
  .hero-mark p { font-size: 9px; letter-spacing: .07em; }
  .hero-mark p span { margin-inline: 3px; }
  .reading-layout { grid-template-columns: 180px minmax(0, 1fr); gap: 40px; }
  .contents { padding-right: 0; }
}

@media (max-width: 780px) {
  html { scroll-padding-top: 94px; }
  .site-header { padding: 12px 22px; min-height: 68px; gap: 12px; }
  .brand { font-size: 12px; gap: 9px; }
  .site-links { display: none; }
  .mobile-contact { display: inline-flex; gap: 7px; flex-shrink: 0; font-size: 11px; text-decoration: none; color: var(--green); padding-block: 10px; }
  main, .site-footer { width: calc(100% - 44px); }
  .hero { grid-template-columns: minmax(0, 1fr); padding: 57px 0 42px; gap: 0; }
  h1 { font-size: clamp(42px, 7.9vw, 59px); margin: 23px 0; }
  .lead { max-width: 500px; font-size: 17px; }
  .hero-mark { display: none; }
  .hero-actions { gap: 14px 22px; margin-top: 28px; }
  .edition { margin-top: 22px; }
  .reading-layout { display: block; padding-top: 0; }
  .contents { position: static; padding: 26px 0 23px; border-bottom: 1px solid var(--line); margin-bottom: 38px; }
  .contents ol { display: grid; grid-template-columns: 1fr 1fr; gap: 1px 18px; margin: 14px 0 0; }
  .contents li { margin: 0; }
  .contents li a { gap: 5px; font-size: 11px; padding: 6px 0; }
  .contents-home { display: none; }
  .letter { max-width: none; }
  .chapter { padding: 43px 0 47px; }
  .first-chapter { padding-top: 0; }
  h2 { font-size: 30px; margin-bottom: 24px; }
  .chapter p { font-size: 15px; line-height: 1.85; margin-bottom: 20px; }
  blockquote { padding-left: 20px; margin: 26px 0; }
  .chapter blockquote p { font-size: 19px; line-height: 1.7; }
  .chapter .central-question p { font-size: 23px; line-height: 1.6; }
  .question-list li { font-size: 15px; }
  .field { grid-template-columns: 76px minmax(0, 1fr); gap: 16px; padding: 22px 0; }
  .field h3 { font-size: 11px; }
  .field p { font-size: 14px; margin: 0; }
  .work-list li { font-size: 14px; }
  .chapter.closing { padding-bottom: 48px; }
  .chapter .closing-question { font-size: 27px; }
  .site-footer { flex-direction: column; padding-top: 25px; gap: 17px; }
}

@media (max-width: 360px) {
  .brand span { max-width: 115px; }
  h1 { font-size: 39px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 10px; }
  .field { grid-template-columns: 1fr; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}

@media print {
  :root { color-scheme: light; --bg: #fff; --text: #111; --soft: #252525; --muted: #555; --line: #ccc; --green: #245f43; }
  body { background: #fff; font-size: 10pt; }
  .site-header { position: static; background: #fff; padding: 0 0 15px; min-height: 0; }
  .site-links, .mobile-contact, .hero-actions, .hero-mark, .contents, .skip-link, .site-footer nav { display: none; }
  main, .site-footer { width: 100%; }
  .hero { display: block; padding: 28px 0; }
  h1 { font-size: 32pt; margin: 15px 0; }
  .lead { font-size: 12pt; }
  .reading-layout { display: block; padding-top: 28px; }
  .letter { max-width: none; }
  .chapter { padding: 24px 0; }
  h2 { font-size: 21pt; break-after: avoid; }
  h3, .section-number { break-after: avoid; }
  .chapter p, .field p, .work-list li { font-size: 10pt; line-height: 1.65; orphans: 3; widows: 3; }
  .chapter blockquote p, .chapter .central-question p { font-size: 14pt; }
  blockquote, .field, .work-list li { break-inside: avoid; }
  .chapter .closing-question { font-size: 18pt; }
  .site-footer { padding: 20px 0 0; }
}

/* Website shell integration; invitation typography and body unchanged. */
.site-footer { display:block; max-width:1160px; padding:28px 0 40px; }
.site-footer nav { gap:14px 18px; }
.mobile-menu { display:none; }
@media(max-width:1050px) { .site-links { gap:15px; font-size:12px; } }
@media(max-width:780px) { .mobile-menu { display:block; position:relative; font-size:13px; } .mobile-menu summary { cursor:pointer; padding:10px; color:var(--green); } .mobile-menu nav { position:absolute; top:100%; right:0; min-width:185px; display:grid; padding:12px 18px; gap:12px; background:var(--surface); border:1px solid var(--line); } .mobile-menu nav a { text-decoration:none; } }
@media print { .mobile-menu { display:none; } .site-footer .site-footer-links { display:none; } }