:root {
  --bg: #f6f7f9;
  --paper: #fff;
  --ink: #19252e;
  --muted: #65727d;
  --line: #dce3e8;
  --green: #137960;
  --mint: #e9f5ed;
  --orange: #e68a38;
  --navy: #142c39;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.8 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { color: var(--green); }
button { font: inherit; cursor: pointer; }
code { font: 12px/1.6 var(--mono); background: #eaf0ef; padding: 2px 5px; border-radius: 4px; }
h1 { font-size: clamp(28px, 3.4vw, 42px); line-height: 1.3; letter-spacing: -1.2px; margin: 14px 0 10px; }
h1 em { color: var(--green); font-style: normal; }
h2 { font-size: 19px; margin: 0 0 6px; letter-spacing: -.3px; }
p { margin: 8px 0; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 14px 32px; background: #fffffff2; backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 750; text-decoration: none; color: var(--ink); }
.mark { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: var(--green); color: #fff; font-size: 19px; }
.who { display: flex; align-items: center; gap: 12px; }

.wrap { max-width: 1080px; margin: auto; padding: 30px 32px 60px; }
.hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 32px; align-items: center; padding-bottom: 26px; }
.eyebrow { font: 11px/1.5 var(--mono); letter-spacing: 2px; color: var(--green); font-weight: 700; }
.lead { color: var(--muted); max-width: 520px; }

.blueprint {
  border-radius: 16px; padding: 20px; background: var(--navy); color: #e2f3ef;
  background-image: radial-gradient(#34505d 1px, transparent 1px); background-size: 16px 16px;
}
.blueprint .label { font: 10px var(--mono); color: #91b9af; letter-spacing: 2px; margin-bottom: 18px; }
.flow-node { display: flex; justify-content: space-between; align-items: center; gap: 10px; border: 1px solid #52716f; background: #1d3944; padding: 9px 14px; border-radius: 8px; }
.flow-node strong { font-size: 13px; }
.flow-node small { font: 10px var(--mono); color: #a2c9bf; }
.flow-arrow { font: 12px/2.2 var(--mono); color: #8cb5ac; text-align: center; }
.flow-dual { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.flow-dual div { border: 1px dashed #65827f; border-radius: 7px; padding: 8px; font: 11px var(--mono); text-align: center; }

.panel { background: var(--paper); border: 1px solid var(--line); border-radius: 14px; padding: 22px; margin: 18px 0; }
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }

.banner { border-radius: 10px; padding: 12px 16px; font-size: 13px; margin: 4px 0 18px; border: 1px solid var(--line); background: #fff; }
.banner.ok { background: var(--mint); border-color: #bcdfd0; color: var(--green); }
.banner.err { background: #fdeceb; border-color: #f0c4be; color: #a4442b; }

button.primary { background: var(--green); color: #fff; border: 0; border-radius: 8px; padding: 9px 18px; font-weight: 650; }
button.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 7px 14px; }
button.danger { background: #fff; color: #a4442b; border: 1px solid #f0c4be; border-radius: 8px; padding: 7px 14px; font-size: 13px; }
button:disabled { opacity: .5; cursor: not-allowed; }

.row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
input[type="text"] {
  flex: 1 1 220px; border: 1px solid #bdcbc8; border-radius: 8px; padding: 9px 12px;
  font: inherit; color: var(--ink); background: #fff;
}
input:focus-visible, button:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }

.accounts { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin-top: 14px; }
.account { border: 1px solid var(--line); border-radius: 11px; padding: 16px; background: #fff; }
.account.active-card { border-color: #bcdfd0; box-shadow: 0 6px 18px #13796012; }
.account.alert-card { border-color: #f0c4be; background: #fffaf8; }
.account-head { display: flex; align-items: center; gap: 9px; margin-bottom: 10px; }
.avatar { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: #e8f0fb; color: #456f9c; font: 12px var(--mono); }
.account:nth-child(2n) .avatar { background: #fff0e1; color: #b47334; }
.account dl { display: grid; grid-template-columns: 1fr auto; gap: 5px 10px; font-size: 12px; margin: 0; }
.account dt { color: var(--muted); }
.account dd { margin: 0; font-family: var(--mono); text-align: right; overflow-wrap: anywhere; }
.account-actions { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.pill { display: inline-block; font-size: 10px; padding: 2px 8px; border-radius: 20px; background: var(--mint); color: var(--green); font-weight: 700; }
.pill.warn { background: #fff3e5; color: #a05c1d; }
.pill.bad { background: #fdeceb; color: #a4442b; }
.empty { margin-top: 12px; }

.output {
  margin: 10px 0 0; padding: 14px; border-radius: 9px; background: #eff5f2;
  border: 1px solid #c8ddd2; font: 12px/1.75 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere;
}
.log {
  margin-top: 10px; padding: 14px; border-radius: 9px; background: var(--navy); color: #b7d8cc;
  font: 12px/1.8 var(--mono); white-space: pre-wrap; min-height: 90px;
}
.foot { display: flex; justify-content: space-between; gap: 16px; padding: 6px 32px 30px; color: var(--muted); font-size: 11px; }

@media (max-width: 820px) {
  .topbar, .wrap, .foot { padding-left: 18px; padding-right: 18px; }
  .hero { grid-template-columns: 1fr; }
  .blueprint { display: none; }
  .foot { display: block; }
}