:root {
  --bg: #faf8f4; --card: #fff; --ink: #222; --muted: #6a655c; --line: #e5e0d6; --link: #1d5fa8; --mark: #fff0b8;
  --no: #a8321f; --no-bg: #fbefec; --ok: #2e7d4f;
  --sans: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--sans); }
main { max-width: 760px; margin: 0 auto; padding: 40px 16px 80px; }
a { color: var(--link); }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 12px; }
header p { margin: 0 0 12px; }
.lede { font-size: 18px; }
.name { display: block; margin: 18px 0 6px; font-weight: 600; }
.name input { display: block; width: 100%; max-width: 320px; margin-top: 4px; padding: 8px 10px; font: inherit; font-weight: 400;
              border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.summary { color: var(--muted); font-size: 14px; }
.alert { background: var(--no-bg); color: var(--no); border-radius: 8px; padding: 8px 12px; font-size: 14px; }

details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; margin: 10px 0; }
summary { cursor: pointer; padding: 14px 16px; display: flex; align-items: baseline; gap: 12px; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::before { content: '›'; color: var(--muted); font-size: 20px; line-height: 1; transition: transform .15s; }
details[open] summary::before { transform: rotate(90deg); }
.page-title { font-weight: 600; flex: 1; }
.count { color: var(--muted); font-size: 14px; white-space: nowrap; }
.count .no { color: var(--no); }
.page-body { padding: 0 16px 8px; }
.open-page { font-size: 14px; display: inline-block; margin-bottom: 4px; }

.link { border-top: 1px solid var(--line); padding: 14px 0; }
.sentence { font-family: Georgia, 'Times New Roman', serif; font-size: 17px; margin: 0 0 6px; }
mark { background: var(--mark); color: var(--link); text-decoration: underline; text-underline-offset: 3px; padding: 0 2px; border-radius: 3px; }
.dest { font-size: 15px; margin: 0 0 10px; }
.ournote { font-size: 14px; color: var(--muted); font-style: italic; margin: -4px 0 10px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
button { font: inherit; font-size: 14px; border-radius: 8px; padding: 6px 14px; cursor: pointer; border: 1px solid var(--line);
         background: #fff; color: var(--ink); }
button:hover { border-color: var(--muted); }
button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
.link.no .sentence, .link.no .dest { opacity: .5; }
.link.no mark { background: #eee; color: var(--muted); }
.status { font-size: 14px; color: var(--no); font-weight: 600; margin: 0 0 8px; }
textarea { width: 100%; min-height: 70px; margin-top: 10px; padding: 8px 10px; font: inherit; font-size: 15px; border: 1px solid var(--line);
           border-radius: 8px; resize: vertical; }
.saved { font-size: 13px; color: var(--ok); margin-top: 4px; min-height: 1.2em; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.group { margin-top: 34px; }
.group h2 { font-size: 20px; margin: 0 0 8px; display: flex; align-items: baseline; gap: 12px; }
.group h2 .count { font-size: 14px; font-weight: 400; }