:root {
  color-scheme: light;
  --bg: #F5F4EF;
  --ink: #1A1D1C;
  --ink2: #5B625F;
  --ink3: #8E9592;
  --line: #E4E2DA;
  --line-soft: #EDEBE4;
  --border-muted: #C3C7C3;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }

.pg { max-width: 640px; margin-inline: auto; padding-inline: 16px; padding-block: 20px 28px; font-size: 16px; line-height: 1.75; }
.pg-top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 28px; }
.pg-brand { font-size: 15px; font-weight: 600; }
.pg-domain { font-family: var(--mono); font-size: 12px; color: var(--ink3); }
.pg h1 { font-size: 26px; font-weight: 700; line-height: 1.25; margin: 0 0 14px; }
.pg-meta { display: grid; grid-template-columns: auto auto minmax(0, 1fr); gap: 0 18px; padding-bottom: 12px; border-bottom: 2px solid var(--ink); margin-bottom: 26px; }
.pg-meta dt { font-size: 12px; color: var(--ink3); grid-row: 1; }
.pg-meta dd { margin: 0; font-family: var(--mono); font-size: 13px; grid-row: 2; }
.pg-meta dd.name { font-family: var(--sans); }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .1em; color: var(--ink3); margin: 0 0 6px; }
.glance { margin: 0 0 32px; }
.glance div { display: grid; grid-template-columns: 6.2em minmax(0, 1fr); gap: 12px; padding-block: 12px; border-bottom: 1px solid var(--line); }
.glance dt { font-size: 15px; font-weight: 600; line-height: 1.6; }
.glance dd { margin: 0; font-size: 15.5px; line-height: 1.6; color: var(--ink2); }
.pg h2 { font-size: 17px; font-weight: 700; line-height: 1.4; margin: 30px 0 8px; }
.pg p { margin: 0 0 10px; }
.pg ul { margin: 0 0 10px; padding-left: 1.2em; }
.pg li + li { margin-top: 4px; }
.pg .muted { color: var(--ink2); }
.pg a { color: var(--ink); text-decoration-color: var(--border-muted); text-underline-offset: 3px; }
.pg a:hover { text-decoration-color: var(--ink); }
.pg a:focus-visible, .copy:focus-visible, summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; border-radius: 4px; }
.note { background: var(--line-soft); border-radius: 10px; padding: 14px 16px; margin: 12px 0; font-size: 15.5px; line-height: 1.7; }
.note p:last-child { margin: 0; }
.note .src { font-size: 14px; color: var(--ink2); }
.pg-foot { margin-top: 36px; padding-top: 14px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 14px; color: var(--ink2); }
.pg-foot a { color: var(--ink2); }
.pg-foot .here { color: var(--ink); font-weight: 600; text-decoration: none; }

.mail { padding-block: 4px 18px; border-bottom: 2px solid var(--ink); margin-bottom: 28px; }
.mail-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.mail-addr { font-family: var(--mono); font-size: 17px; font-weight: 600; user-select: all; overflow-wrap: anywhere; }
.copy { font: 600 14px/1 var(--sans); color: var(--ink); background: transparent; border: 1.5px solid var(--ink); border-radius: 999px; padding: 8px 14px; cursor: pointer; }
.copy:active { opacity: .85; }
.mail p { font-size: 15.5px; color: var(--ink2); margin: 10px 0 0; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: minmax(0, 1fr) 20px; gap: 12px; align-items: center; padding-block: 14px; font-size: 17px; font-weight: 600; line-height: 1.45; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; width: 12px; height: 12px; justify-self: end; background: linear-gradient(var(--ink), var(--ink)) center / 12px 1.5px no-repeat, linear-gradient(var(--ink), var(--ink)) center / 1.5px 12px no-repeat; transition: transform .15s ease; }
.faq details[open] summary::after { background: linear-gradient(var(--ink), var(--ink)) center / 12px 1.5px no-repeat; }
.faq .a { padding-bottom: 16px; font-size: 16px; }
.faq .a p:last-child, .faq .a ol:last-child { margin-bottom: 0; }
.faq ol { margin: 0 0 10px; padding-left: 1.3em; }
.path { font-weight: 600; }
@media (prefers-reduced-motion: reduce) { .faq summary::after { transition: none; } }