:root{--base:#243B6E;--ink:#E6CF8C;--inkShine:#F6E9C0;--inkShade:#B49C63;--inkPeak:#FFF1CB;--inkEdge:#F6E9C0;--text:#E6DCC7;--milk:#E6DCC7;--accent:#A89670;--brand:#E6DCC7;--roman:#E6CF8C;--letter:#243B6E;--paper:#F3EFE4;--heading:#243B6E;--muted:#687080;--rule:#BBA979;--ruleSoft:#DDD6C7;--letterShine:#CEB574;--title-asset:url("./assets/houju-title.svg")}
.letter{background:var(--letter)}
.letter-brand{background:linear-gradient(78deg,var(--letterShine) calc(var(--letter-beam,48%) - 36%),var(--inkShine) var(--letter-beam,48%),var(--letterShine) calc(var(--letter-beam,48%) + 36%))}
.close-invite{color:var(--ink)}

/* Paper-text colors follow C5; English masthead keeps its moving gradient. */
/* C19: exact paper-text colors from the published green C5 source.
   Typeface, weight, size, leading, tracking and current wording stay intact. */
.paper{color:#354B3B}
.paper-heading h2,.letter-body .greeting{color:#294833}
.paper-heading p,.visit-info dt,.signature-name>span:last-child{color:#647560}
.visit-info dd{color:#53634D}
.letter-cn-brand{background:#39403A}
.paper-hosts{font-size:11.5px;font-weight:300;line-height:1.7;letter-spacing:.04em;margin:18px 0 0;color:#53634D}
.bottom-row .brand-mark{color:#F3EEE2}
.bottom-row .brand-mark::after{display:none}

/* C18: official wordmark above, one complete series name below. */
.top-row .brand-mark { color: #F3EEE2; flex: 0 0 112px; }
.bottom-row .cover-series {
  font-family: HoujuSong, serif;
  font-size: 10px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: .12em;
}
.cover-date .date-season { font-family: HoujuSong, serif; letter-spacing: .02em; }
@media (max-width: 374px) {
  .bottom-row .cover-series { font-size: 9px; letter-spacing: .10em; }
}