:root {
  --bg: #f4f3f1; --panel: #ffffff; --ink: #1c1b22; --muted: #6a6775; --line: #dedbe4;
  --accent: #5b3fd6; --accent-ink: #ffffff; --ok: #1d7a4c; --ok-bg: #e4f4ea; --err: #a8322d; --err-bg: #fae6e4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131217; --panel: #1c1b22; --ink: #ecebf1; --muted: #9a97a6; --line: #2e2c37;
    --accent: #9c86ff; --accent-ink: #14121c; --ok: #6fd3a0; --ok-bg: #16281f; --err: #f0938c; --err-bg: #301a19;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, "Segoe UI", sans-serif; }
a { color: var(--accent); }
.top { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
       padding: 14px 20px; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; letter-spacing: 0.02em; color: var(--ink); text-decoration: none; }
nav { display: flex; align-items: center; gap: 16px; }
nav form { margin: 0; }
.who { color: var(--muted); }
main { max-width: 960px; margin: 0 auto; padding: 28px 16px 48px; }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 0 16px 28px; }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 12px; text-wrap: balance; }
h2 { font-size: 18px; margin: 0 0 12px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.hero { max-width: 520px; margin: 9vh auto 0; }
.hero p { color: var(--muted); }
.hero .button { margin-top: 10px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 20px; margin: 0 0 18px; }
.person { display: flex; align-items: center; gap: 16px; }
.person img { border-radius: 50%; }
.person h1, .person p { margin: 0; }
.button { display: inline-block; padding: 9px 16px; border: 0; border-radius: 8px; cursor: pointer;
          background: var(--accent); color: var(--accent-ink); font: inherit; font-weight: 600; text-decoration: none; }
.button:hover { filter: brightness(1.08); }
.plain { border: 0; padding: 0; background: none; color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline; }
.plain.danger { color: var(--err); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin: 0 0 16px; }
input[type=text] { flex: 1 1 200px; min-width: 0; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
                   background: var(--bg); color: var(--ink); font: inherit; }
.copy { width: 100%; font-family: ui-monospace, Consolas, monospace; font-size: 14px; }
.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
.num { font-variant-numeric: tabular-nums; }
.act { text-align: right; padding-right: 0; white-space: nowrap; }
.act form { margin: 0; }
.notice { padding: 12px 14px; border-radius: 8px; margin: 0 0 18px; }
.notice p { margin: 0 0 8px; }
.notice.ok { background: var(--ok-bg); color: var(--ok); }
.notice.err { background: var(--err-bg); color: var(--err); }
.tag { font-size: 12px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.tag.open { color: var(--ok); border-color: currentColor; }
.big { font-size: 40px; font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; margin: 4px 0 8px; }
.big .unit { font-size: 16px; font-weight: 600; color: var(--muted); }
.gain { color: var(--ok); }
.loss { color: var(--err); }
.button.quiet { background: none; color: var(--ink); border: 1px solid var(--line); }
.button:disabled { opacity: 0.45; cursor: default; }
.row form { margin: 0; }
label { display: block; font-size: 14px; color: var(--muted); margin: 0 0 4px; }
code { font-family: ui-monospace, Consolas, monospace; font-size: 14px; }
tr.undone td { color: var(--muted); text-decoration: line-through; }
.card h2:not(:first-child) { margin-top: 22px; }
.stack { display: grid; gap: 14px; }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; margin: 0; }
legend { color: var(--muted); font-size: 14px; padding: 0 6px; }
fieldset label { color: var(--ink); font-size: 16px; margin: 4px 0; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid input[type=text], .grid input[type=password] { width: 100%; }
input[type=password] { padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg);
                       color: var(--ink); font: inherit; }
.setup { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 22px; align-items: start; }
@media (max-width: 760px) { .setup { grid-template-columns: 1fr; } }
.steps ol { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.steps li { counter-increment: step; margin: 0 0 2px; }
.steps a { display: block; padding: 7px 10px; border-radius: 8px; color: var(--ink); text-decoration: none; }
.steps a::before { content: counter(step) ". "; color: var(--muted); }
.steps li.done a::before { content: "✓ "; color: var(--ok); }
.steps li.here a { background: var(--panel); border: 1px solid var(--line); font-weight: 600; }
.steps a:hover { background: var(--panel); }
.pane h1 { font-size: 22px; }
.pane h2 { font-size: 16px; margin: 6px 0 0; }
.strong { font-weight: 600; }
.choice { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; color: var(--ink); font-size: 16px;
          padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; margin: 0; cursor: pointer; }
.choice input { margin-top: 5px; }
.indent { margin-left: 34px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 4px; }
.aside { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); }
.aside form { margin: 0; }
.command { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 10px; align-items: center; }
.command label { color: var(--ink); margin: 0; }
@media (max-width: 520px) { .command { grid-template-columns: 1fr; } }
.todo { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.summary { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 6px 14px; margin: 0; }
.summary dt { color: var(--muted); }
.summary dd { margin: 0; }
@media (max-width: 520px) { .summary { grid-template-columns: 1fr; } .summary dd { margin-bottom: 8px; } }
.pane p, .stack p { margin: 0; }