:root {
  --bg: #f5f6f8; --card: #fff; --text: #1d2330; --muted: #6b7385; --line: #e3e6ec;
  --primary: #2453d4; --primary-h: #1c43b0; --danger: #c62f2f; --ok: #1f8a4c;
  --ok-bg: #e6f5ec; --err-bg: #fdecec; --warn-bg: #fff6df; --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --card: #1b1f27; --text: #e6e9ef; --muted: #8f97a8; --line: #2c323d;
    --primary: #4f7cff; --primary-h: #6b90ff; --danger: #ef5b5b; --ok: #4cc27f;
    --ok-bg: #16301f; --err-bg: #3a1c1c; --warn-bg: #3a3118;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
code { font: 0.92em ui-monospace, Consolas, monospace; background: var(--bg); padding: 1px 6px; border-radius: 5px; }
a { color: var(--primary); }
h1 { font-size: 1.4rem; margin: 0 0 12px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }

.topbar { display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; background: var(--card); border-bottom: 1px solid var(--line); }
.topbar nav { display: flex; gap: 16px; align-items: center; }
.brand { font-weight: 700; font-size: 1.05rem; }
.logo { color: var(--primary); }
main { max-width: 1100px; margin: 24px auto; padding: 0 16px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
.card.narrow { max-width: 560px; margin: 40px auto; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.card-head h2 { margin: 0; }

.stats { display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 20px; display: flex; flex-direction: column; min-width: 150px; }
.stat .num { font-size: 1.8rem; font-weight: 700; line-height: 1.1; }
.stat .label, .label { color: var(--muted); font-size: 0.85rem; }
.stat.links { flex: 1; gap: 2px; }

label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; font-size: 0.9rem; }
label.inline { flex-direction: row; align-items: center; gap: 6px; font-weight: 400; }
input[type=text], input:not([type]), input[type=password], input[type=search] {
  font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 7px; background: var(--card); color: var(--text); min-width: 0;
}
input:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
fieldset { border: 0; padding: 0; margin: 0; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
legend { font-weight: 500; font-size: 0.9rem; margin-bottom: 4px; }

.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; gap: 6px; margin-top: 6px; }
.grid-form { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; align-items: end; }
.grid-form .pwmode, .grid-form .custom-pw { grid-column: 1 / -1; }
.custom-pw:not([hidden]) { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; }
.popover .custom-pw:not([hidden]) { grid-template-columns: 1fr; gap: 6px; }

.btn { font: inherit; display: inline-block; padding: 8px 14px; border-radius: 7px; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-h); }
.btn.danger { color: var(--danger); }
.btn.danger:hover { border-color: var(--danger); }
.btn.ghost { background: transparent; }
.btn.small { padding: 4px 10px; font-size: 0.85rem; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 0.85rem; }
.right { text-align: right; }
.actions { display: flex; gap: 6px; justify-content: flex-end; align-items: flex-start; }
.badge { font-size: 0.8rem; padding: 2px 8px; border-radius: 99px; white-space: nowrap; }
.badge.on { background: var(--ok-bg); color: var(--ok); }
.badge.off { background: var(--bg); color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 0.8rem; }

details summary { cursor: pointer; list-style: none; }
details summary::-webkit-details-marker { display: none; }
details.menu { position: relative; }
details.menu .popover { position: absolute; right: 0; top: 34px; z-index: 5; width: 260px; text-align: left; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.note-edit summary { border-bottom: 1px dashed var(--line); display: inline; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.flash.error { background: var(--err-bg); color: var(--danger); }
.warn { background: var(--warn-bg); padding: 10px 14px; border-radius: 8px; }
.creds { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; margin: 16px 0 12px; display: grid; gap: 8px; }
.creds div { display: grid; grid-template-columns: 90px 1fr; align-items: center; }
.creds code { font-size: 1.05rem; user-select: all; }
table.kv th { width: 200px; }

@media (max-width: 700px) {
  .grid-form, .custom-pw:not([hidden]) { grid-template-columns: 1fr; }
  .actions { flex-wrap: wrap; }
}

/* ---------------------------------------------------------------- public guide */
a.brand { color: var(--text); text-decoration: none; }
.topbar nav a { text-decoration: none; }
h3 { font-size: 1rem; margin: 18px 0 8px; }
.hero { margin: 8px 0 20px; }
.hero h1 { font-size: 1.7rem; margin-bottom: 6px; }
.hero p { color: var(--muted); max-width: 720px; margin: 0; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 10px; }
.facts > div { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; display: flex; flex-direction: column; gap: 4px; }
.facts code { font-size: 1.05rem; align-self: flex-start; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: -1px; position: relative; z-index: 1; }
.tabs a { padding: 9px 16px; border: 1px solid var(--line); border-bottom: 0; border-radius: var(--radius) var(--radius) 0 0; background: var(--bg); color: var(--muted); text-decoration: none; font-weight: 500; }
.tabs a.active { background: var(--card); color: var(--text); }
.tab-panel { border-top-left-radius: 0; }
ol.steps { padding-left: 22px; margin: 0 0 8px; }
ol.steps > li { margin-bottom: 10px; }
ol.steps table.kv { margin-top: 8px; }
table.kv th { font-weight: 500; color: var(--text); }
pre { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; overflow-x: auto; margin: 8px 0; }
pre code { background: none; padding: 0; }
details > summary { margin: 8px 0; }
@media (max-width: 700px) { table.kv th { width: auto; } .tabs a { padding: 8px 12px; } }