:root {
  --ink: #141414;
  --paper: #f6f5ef;
  --white: #fff;
  --lime: #f5ff68;
  --mint: #9bf5d0;
  --line: rgba(20, 20, 20, 0.12);
  --muted: rgba(20, 20, 20, 0.62);
  --font-display: "Syne", "Manrope", sans-serif;
  --font-body: "Manrope", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  line-height: 1.5;
}
button, input, textarea { font: inherit; }
button { cursor: pointer; }

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 20%, rgba(245, 255, 104, 0.45), transparent 28%),
    var(--paper);
}
.login-card {
  width: min(420px, 100%);
  padding: 36px 32px;
  border: 1.5px solid var(--ink);
  border-radius: 24px;
  background: var(--white);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 800 22px/1 var(--font-display);
  letter-spacing: -0.05em;
}
.mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--lime);
  display: grid;
  place-items: center;
  font-weight: 800;
}
.login h1 { margin: 22px 0 8px; font: 800 28px/1.15 var(--font-display); }
.login p { margin: 0 0 22px; color: var(--muted); }
label { display: block; margin-bottom: 12px; font-size: 13px; font-weight: 700; }
input, textarea {
  width: 100%;
  margin-top: 6px;
  padding: 12px 14px;
  border: 1.5px solid var(--ink);
  border-radius: 12px;
  background: #fff;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 16px;
  border: 1.5px solid var(--ink);
  border-radius: 12px;
  background: var(--lime);
  font-weight: 800;
}
.btn.dark { background: var(--ink); color: #fff; }
.btn.ghost { background: transparent; }
.btn.full { width: 100%; }
.err { color: #9a3412; font-size: 13px; min-height: 1.2em; }

.shell { min-height: 100vh; display: grid; grid-template-columns: 232px 1fr; }
.side {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 16px;
  background: var(--ink);
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.side .brand { color: #fff; }
.side nav { display: grid; gap: 6px; }
.side button {
  text-align: left;
  border: 0;
  border-radius: 10px;
  padding: 10px 12px;
  background: transparent;
  color: rgba(255,255,255,.72);
  font-weight: 700;
}
.side button.active { background: var(--lime); color: var(--ink); }
.side .who { margin-top: auto; font-size: 12px; color: rgba(255,255,255,.55); }
.side .who button { margin-top: 8px; color: #fff; padding: 0; }
.main { padding: 28px 32px 64px; }
.top h1 { margin: 0; font: 800 32px/1.15 var(--font-display); letter-spacing: -0.04em; }
.top p { margin: 8px 0 0; color: var(--muted); max-width: 640px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 22px 0; }
.stat, .card, .buyer, .deal {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.stat { padding: 16px; }
.stat small { color: var(--muted); font-weight: 700; }
.stat strong { display: block; margin-top: 6px; font: 800 28px/1 var(--font-display); }
.grid-2 { display: grid; grid-template-columns: 1.2fr .8fr; gap: 14px; }
.card { padding: 18px; }
.card h2 { margin: 0 0 12px; font-size: 16px; }
.row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
.tag {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--lime);
  font-size: 11px;
  font-weight: 800;
}
.tag.mint { background: var(--mint); }
.tag.warn { background: #ffd0c8; }
.list { display: grid; gap: 12px; }
.buyer, .deal { padding: 16px 18px; }
.buyer h3, .deal h3 { margin: 6px 0; font-size: 18px; }
.muted { color: var(--muted); font-size: 13px; }
.facts { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.facts span {
  padding: 6px 8px;
  border-radius: 8px;
  background: var(--paper);
  font-size: 12px;
  font-weight: 700;
}
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.split { display: grid; grid-template-columns: 280px 1fr; gap: 14px; align-items: start; }
.pick { display: grid; gap: 8px; }
.pick button {
  text-align: left;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
}
.pick button.active { border-color: var(--ink); background: var(--lime); }
.quote {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 12px 0;
}
.quote div { padding: 10px; border-radius: 10px; background: var(--paper); }
.quote small { display: block; color: var(--muted); }
textarea { min-height: 140px; }
.toast {
  margin-top: 10px;
  font-size: 13px;
  font-weight: 700;
}

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: relative; height: auto; }
  .side nav { grid-template-columns: repeat(2, 1fr); }
  .stats, .grid-2, .split, .quote { grid-template-columns: 1fr; }
  .main { padding: 20px 16px 48px; }
}