:root {
  --bg: #f4f7ff;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --brand: #2563eb;
  --brand2: #4f46e5;
  --good: #059669;
  --bad: #dc2626;
  --warn: #d97706;
  --shadow: 0 10px 30px rgba(37, 99, 235, 0.08);
  --radius: 18px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.55;
}

.bg-orb {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(70px);
  z-index: 0;
  pointer-events: none;
}
.orb-a { top: -80px; left: -80px; background: rgba(59,130,246,.28); }
.orb-b { top: 20%; right: -120px; background: rgba(99,102,241,.18); }

.topbar, main { position: relative; z-index: 1; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 28px;
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
}
.brand { display: flex; gap: 12px; align-items: center; }
.logo {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  color: #fff; font-weight: 800;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  box-shadow: var(--shadow);
}
.brand-name { font-weight: 800; font-size: 18px; }
.brand-name span { color: var(--brand); font-weight: 700; }
.brand-sub { color: var(--muted); font-size: 12px; }
.top-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.pill {
  font-size: 12px; padding: 6px 10px; border-radius: 999px;
  background: #eef2ff; color: #3730a3; border: 1px solid #c7d2fe;
}
.pill.ok { background: #ecfdf5; color: #047857; border-color: #a7f3d0; }
.pill.bad { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }
.link, .linkish {
  color: var(--brand); text-decoration: none; font-size: 13px; background: none; border: 0; cursor: pointer;
}

.layout { max-width: 1180px; margin: 0 auto; padding: 22px 18px 48px; display: grid; gap: 18px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 18px 16px;
}
.card-hd { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 12px; }
.card-hd h2 { margin: 0; font-size: 17px; }
.muted { color: var(--muted); font-size: 12px; }

.hero {
  display: grid;
  grid-template-columns: 1.6fr .9fr;
  gap: 18px;
  background:
    radial-gradient(circle at 90% 10%, rgba(99,102,241,.12), transparent 40%),
    #fff;
}
.eyebrow {
  display: inline-block;
  font-size: 12px;
  color: #4338ca;
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.hero h1 { margin: 0 0 10px; font-size: 28px; letter-spacing: -0.02em; }
.lead { margin: 0; color: #334155; }
.hero-steps { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.hero-steps div {
  background: #f8fafc; border: 1px solid var(--line); border-radius: 12px;
  padding: 8px 12px; font-size: 13px; color: #334155;
}
.hero-steps b {
  display: inline-grid; place-items: center; width: 20px; height: 20px;
  border-radius: 50%; background: var(--brand); color: #fff; font-size: 12px; margin-right: 6px;
}
.hero-meta {
  background: #0f172a; color: #e2e8f0; border-radius: 14px; padding: 14px;
  font-size: 13px; line-height: 1.7; white-space: pre-line;
}

.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.kpi {
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 14px 16px;
  box-shadow: var(--shadow);
}
.kpi .label { color: var(--muted); font-size: 12px; }
.kpi .value { font-size: 24px; font-weight: 800; margin: 4px 0; letter-spacing: -0.03em; }
.kpi .delta { font-size: 12px; font-weight: 600; }
.delta.up { color: var(--good); }
.delta.down { color: var(--bad); }
.delta.flat { color: var(--muted); }

.grid-2 { display: grid; grid-template-columns: 1.1fr .9fr; gap: 16px; }
.chart {
  height: 160px; display: flex; align-items: flex-end; gap: 4px;
  padding: 8px 4px 0; border-bottom: 1px solid var(--line); margin-bottom: 14px;
}
.bar {
  flex: 1; border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, #60a5fa, #2563eb);
  min-width: 0; position: relative;
}
.bar:hover::after {
  content: attr(data-tip);
  position: absolute; bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  background: #0f172a; color: #fff; font-size: 11px; padding: 4px 6px; border-radius: 6px;
  white-space: nowrap; z-index: 2;
}
.mini-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mini-grid h3 { margin: 0 0 8px; font-size: 13px; color: #334155; }
.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.list li {
  display: flex; justify-content: space-between; gap: 8px;
  font-size: 13px; padding: 8px 10px; background: #f8fafc; border-radius: 10px; border: 1px solid var(--line);
}
.list .name { color: #0f172a; }
.list .val { color: var(--muted); white-space: nowrap; }

.sentinel-list, .action-list { display: grid; gap: 10px; max-height: 520px; overflow: auto; }
.sentinel, .action {
  border: 1px solid var(--line); border-radius: 14px; padding: 12px 12px 10px; background: #fafbff;
}
.sentinel.high { border-color: #fecaca; background: #fff7f7; }
.sentinel.medium { border-color: #fde68a; background: #fffbeb; }
.badge {
  display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px; margin-right: 6px;
}
.badge.high { background: #fee2e2; color: #b91c1c; }
.badge.medium { background: #ffedd5; color: #c2410c; }
.badge.low { background: #e2e8f0; color: #475569; }
.sentinel h3, .action h3 { margin: 6px 0; font-size: 14px; }
.sentinel p, .action p { margin: 0; color: #475569; font-size: 13px; }
.sentinel .ops { margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  border: 1px solid var(--line); background: #fff; border-radius: 999px;
  padding: 5px 10px; font-size: 12px; cursor: pointer; color: #1e293b;
}
.btn:hover { border-color: #93c5fd; color: var(--brand); }
.btn.primary {
  background: linear-gradient(135deg, var(--brand), var(--brand2));
  color: #fff; border: 0;
}

.chat-card { display: flex; flex-direction: column; min-height: 420px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.chips button {
  border: 1px solid #c7d2fe; background: #eef2ff; color: #3730a3;
  border-radius: 999px; padding: 6px 10px; font-size: 12px; cursor: pointer;
}
.chat-log {
  flex: 1; overflow: auto; background: #f8fafc; border: 1px solid var(--line);
  border-radius: 14px; padding: 12px; display: grid; gap: 10px; min-height: 220px; max-height: 340px;
}
.bubble {
  max-width: 95%; padding: 10px 12px; border-radius: 14px; font-size: 13px; white-space: pre-wrap;
}
.bubble.user { justify-self: end; background: #2563eb; color: #fff; border-bottom-right-radius: 4px; }
.bubble.bot { justify-self: start; background: #fff; border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.bubble .meta { display: block; margin-top: 6px; color: var(--muted); font-size: 11px; }
.bubble.user .meta { color: rgba(255,255,255,.8); }
.ask-form { display: flex; gap: 8px; margin-top: 10px; }
.ask-form input {
  flex: 1; border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; font-size: 14px;
}
.ask-form button {
  border: 0; border-radius: 12px; padding: 0 18px; font-weight: 700; color: #fff; cursor: pointer;
  background: linear-gradient(135deg, var(--brand), var(--brand2));
}
.ask-form button:disabled { opacity: .6; cursor: wait; }
.hint { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
.toggle { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }

.evidence-card pre {
  margin: 0; background: #0f172a; color: #e2e8f0; border-radius: 12px;
  padding: 14px; overflow: auto; font-size: 12px; line-height: 1.5;
}

.footer {
  color: #475569; font-size: 12px; display: grid; gap: 6px; padding: 8px 4px 0;
}

.toast {
  position: fixed; right: 18px; bottom: 18px; z-index: 20;
  background: #0f172a; color: #fff; padding: 12px 14px; border-radius: 12px;
  box-shadow: var(--shadow); font-size: 13px; max-width: 320px;
}

@media (max-width: 960px) {
  .hero, .grid-2, .kpis, .mini-grid { grid-template-columns: 1fr; }
  .topbar { padding: 12px 14px; }
  .hero h1 { font-size: 22px; }
}