:root {
  color-scheme: light dark;
  --bg: #f6f8fb; --panel: #ffffff; --fg: #10203a; --muted: #50607a; --line: #d5dce7;
  --accent: #0b7f78; --accent-fg: #ffffff; --tag: #d9f3f0; --tag-fg: #06534e; --warn: #8a4b00; --warn-bg: #fff4e0;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1626; --panel: #13213a; --fg: #e5ecf5; --muted: #9fb0c8; --line: #28405f;
    --accent: #2dd4bf; --accent-fg: #06231f; --tag: #123f45; --tag-fg: #8ff0e2; --warn: #ffcf85; --warn-bg: #2d2412;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
code, textarea, .ph { font-family: var(--mono); }
.wrap { max-width: 76rem; margin: 0 auto; padding: 0 1rem; }
header.top { padding: .7rem 0 .2rem; }
.brand { font: 700 1.05rem/1 var(--mono); letter-spacing: .02em; color: var(--fg); text-decoration: none; }
.brand b { color: var(--accent); }
h1 { font-size: 1.3rem; line-height: 1.25; margin: .5rem 0 .25rem; }
.lede { margin: 0 0 .7rem; color: var(--muted); font-size: .95rem; }
.steps { display: grid; gap: .9rem; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: .8rem; }
.card h2 { font-size: 1rem; margin: 0 0 .45rem; display: flex; align-items: center; gap: .5rem; }
.num { display: inline-grid; place-items: center; width: 1.5rem; height: 1.5rem; border-radius: 50%; background: var(--accent); color: var(--accent-fg); font-size: .85rem; flex: none; }
label.lbl { display: block; font-size: .85rem; color: var(--muted); margin: 0 0 .25rem; }
textarea { width: 100%; min-height: 8.5rem; resize: vertical; padding: .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); font-size: 14px; line-height: 1.45; }
textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
textarea[readonly] { background: transparent; }
.io { display: grid; gap: .6rem; }
.row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-top: .45rem; }
button { font: inherit; font-size: .9rem; padding: .45rem .9rem; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-fg); cursor: pointer; min-height: 2.4rem; }
button.ghost { background: transparent; color: var(--accent); }
button:disabled { opacity: .45; cursor: default; }
.status { font-size: .85rem; color: var(--muted); }
.findings { margin-top: .6rem; }
.findings h3 { font-size: .9rem; margin: 0 0 .3rem; }
.findings ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .25rem; }
.findings li label { display: flex; gap: .5rem; align-items: baseline; font-size: .88rem; padding: .3rem .4rem; border-radius: 6px; cursor: pointer; }
.findings li label:hover { background: var(--bg); }
.findings input { flex: none; transform: translateY(2px); }
.ph { background: var(--tag); color: var(--tag-fg); padding: 0 .3rem; border-radius: 4px; font-size: .82rem; white-space: nowrap; }
.orig { font-size: .82rem; color: var(--muted); }
.pv { font-family: var(--mono); white-space: nowrap; color: var(--fg); }
.off .ph { background: transparent; text-decoration: line-through; color: var(--muted); }
.summary { font-size: .88rem; margin: 0 0 .4rem; }
.note { font-size: .88rem; color: var(--muted); margin: .5rem 0 0; }
.rails { background: var(--warn-bg); color: var(--fg); border-radius: 12px; padding: .8rem 1rem; margin: 1rem 0; font-size: .92rem; }
.rails h2 { font-size: 1rem; margin: 0 0 .3rem; color: var(--warn); }
.rails ul { margin: 0; padding-left: 1.1rem; }
article { max-width: 46rem; padding-bottom: 2rem; }
article h2 { font-size: 1.15rem; margin: 1.6rem 0 .5rem; }
article dl { margin: 0; }
article dt { font-weight: 650; margin-top: .8rem; }
article dd { margin: .15rem 0 0; color: var(--fg); }
article pre { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: .6rem; overflow-x: auto; font-size: .82rem; }
footer { border-top: 1px solid var(--line); padding: 1rem 0 2rem; font-size: .85rem; color: var(--muted); }
@media (min-width: 900px) {
  h1 { font-size: 1.6rem; }
  .io { grid-template-columns: 1fr 1fr; }
  textarea { min-height: 13rem; }
  .card { padding: 1rem 1.1rem; }
}
/* /secrets/ pages */
.sp { max-width: 46rem; }
.sp article { padding-bottom: 1rem; }
.crumbs { font-size: .85rem; color: var(--muted); margin: .3rem 0 0; overflow-wrap: anywhere; }
.sp h1 { overflow-wrap: anywhere; }
.chk textarea { min-height: 5.5rem; }
.chk p.lbl { font-size: .85rem; color: var(--muted); margin: .5rem 0 .25rem; }
.out, .ex { margin: 0; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: .55rem .6rem; font: 14px/1.45 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; }
.ex { background: var(--panel); }
.out .ph, .found .ph { white-space: normal; }
mark.hit { background: var(--accent); color: var(--accent-fg); padding: 0 .3rem; border-radius: 4px; font: 700 .82rem var(--mono); }
.found { list-style: none; margin: .3rem 0 0; padding: 0; font-size: .85rem; display: grid; gap: .2rem; }
.found .pv { white-space: normal; overflow-wrap: anywhere; }
.chk .status { margin: .45rem 0 0; }
blockquote.rule { margin: 0; padding: .55rem .8rem; border-left: 4px solid var(--accent); background: var(--panel); border-radius: 0 8px 8px 0; overflow-wrap: anywhere; }
blockquote.rule p { margin: 0; }
.todo li, .src li { margin: .3rem 0; }
.src { font-size: .88rem; overflow-wrap: anywhere; }
.sp p, .sp li { overflow-wrap: anywhere; }
.types { padding-left: 1.1rem; }
.types li { margin: .45rem 0; }
.cta a { font-weight: 650; }
footer a { color: var(--muted); }
/* front page: words to always hide */
.words { margin-top: .8rem; border-top: 1px solid var(--line); padding-top: .7rem; }
.words h3 { font-size: .95rem; margin: 0; }
.words .note { margin: .25rem 0 .5rem; }
.addword .row { margin-top: 0; }
input[type="text"], select { font: inherit; font-size: 16px; padding: .4rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); min-height: 2.4rem; }
input[type="text"]:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
#wordIn { flex: 1 1 11rem; min-width: 0; font-family: var(--mono); font-size: 15px; }
#wordList { list-style: none; margin: .5rem 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: .35rem; }
#wordList:empty { display: none; }
#wordList li { display: flex; align-items: center; gap: .35rem; max-width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: .15rem .2rem .15rem .55rem; font-size: .88rem; }
#wordList .w { font-family: var(--mono); overflow-wrap: anywhere; }
#wordList select { font-size: .8rem; min-height: 2rem; padding: .1rem .25rem; }
#wordList button { min-height: 2rem; padding: .1rem .55rem; font-size: .8rem; }
.filebtn { position: relative; display: inline-flex; align-items: center; font-size: .9rem; padding: .45rem .9rem; border-radius: 8px; border: 1px solid var(--accent); color: var(--accent); cursor: pointer; min-height: 2.4rem; }
.filebtn input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.filebtn:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }
.howto { margin-top: .4rem; font-size: .88rem; }
.howto summary { cursor: pointer; color: var(--accent); }
.howto p { margin: .4rem 0 0; }