:root {
  --ink: #202322;
  --muted: #66706b;
  --line: #d8dfd9;
  --paper: #f7f8f3;
  --panel: #ffffff;
  --green: #0b6e4f;
  --steel: #516d7a;
  --amber: #b97914;
  --red: #b33b24;
  --blue: #255f92;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px 1fr;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

button, input, textarea { font: inherit; }
button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  min-height: 36px;
  border-radius: 6px;
  padding: 0 14px;
  cursor: pointer;
}
button:hover { border-color: var(--green); }
.primary { background: var(--green); border-color: var(--green); color: #fff; font-weight: 700; }

.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 16px;
  border-right: 1px solid var(--line);
  background: #eef2ec;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.brand { display: grid; grid-template-columns: 42px 1fr; gap: 10px; align-items: center; }
.brand span {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 50%; background: var(--ink); color: #fff; font-weight: 900;
}
.brand strong, .brand small { display: block; }
.brand small { color: var(--muted); margin-top: 3px; }
nav { display: grid; gap: 7px; }
nav button {
  justify-content: flex-start;
  text-align: left;
  border: 0;
  background: transparent;
  min-height: 40px;
}
nav button.active { background: #fff; color: var(--green); box-shadow: inset 3px 0 0 var(--green); }
.seed { margin-top: auto; color: var(--blue); }

.workspace { min-width: 0; padding: 28px; }
.view { display: none; }
.view.active { display: block; }
.page-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}
.page-head p { margin: 0 0 6px; color: var(--green); font-size: 13px; font-weight: 800; }
h1 { margin: 0; font-size: 30px; line-height: 1.15; letter-spacing: 0; }
h2 { margin: 0 0 12px; font-size: 18px; }

.bearing-strip {
  height: 54px;
  margin: 0 0 18px;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: linear-gradient(90deg, #e4e9e1, #f9faf6);
}
.bearing-strip span { border-left: 1px solid #aeb9b0; transform: skewX(-18deg); }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.metric {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  min-height: 94px;
}
.metric span { color: var(--muted); font-size: 13px; }
.metric strong { display: block; margin-top: 8px; font-size: 27px; letter-spacing: 0; }
.metric.warn strong { color: var(--amber); }
.metric.danger strong { color: var(--red); }

.split {
  display: grid;
  grid-template-columns: minmax(280px, .7fr) minmax(360px, 1.3fr);
  gap: 18px;
}
.split > div, .editor, .upload-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}
.risk-list { display: grid; gap: 10px; }
.risk { display: flex; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.risk b { color: var(--red); }

.toolbar, .upload-panel {
  display: flex;
  align-items: end;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}
label { display: grid; gap: 6px; color: var(--muted); font-size: 13px; }
input, textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 9px 10px;
  background: #fff;
  color: var(--ink);
  min-height: 38px;
}
textarea { width: 100%; resize: vertical; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(150px, 1fr)); gap: 12px; margin-bottom: 12px; }
.actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 12px; }

.table-wrap {
  overflow: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}
table { width: 100%; border-collapse: collapse; min-width: 860px; }
th, td { padding: 11px 12px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-size: 12px; background: #f1f4ef; }
td b { color: var(--green); }
.chip { padding: 3px 8px; border-radius: 999px; background: #edf4ef; color: var(--green); font-size: 12px; font-weight: 700; }
.chip.warn { background: #fff3dd; color: var(--amber); }
.chip.danger { background: #ffe9e3; color: var(--red); }

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  max-width: 360px;
  padding: 12px 14px;
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity .18s ease, transform .18s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 920px) {
  body { grid-template-columns: 1fr; }
  .rail { position: static; height: auto; }
  nav { grid-template-columns: repeat(2, 1fr); }
  .workspace { padding: 18px; }
  .page-head, .split { display: block; }
  .metrics, .grid { grid-template-columns: 1fr; }
  .page-head button { margin-top: 12px; }
}