* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: #f4f6fb; color: #1a2233; -webkit-text-size-adjust: 100%;
}
.screen { min-height: 100vh; }
.hidden { display: none !important; }
.card {
  max-width: 360px; margin: 14vh auto; background: #fff; padding: 28px 24px;
  border-radius: 16px; box-shadow: 0 8px 30px rgba(20,40,80,.08); text-align: center;
}
.card h1 { margin: 0 0 4px; color: #1f6feb; }
.card .sub { color: #6b7689; margin: 0 0 18px; font-size: 13px; }
.card input {
  width: 100%; padding: 12px 14px; margin: 8px 0; border: 1px solid #d9e0ec;
  border-radius: 10px; font-size: 15px;
}
.card .row { display: flex; gap: 10px; margin-top: 8px; }
.card button {
  flex: 1; padding: 11px; border: none; border-radius: 10px; background: #1f6feb; color: #fff;
  font-size: 15px; cursor: pointer;
}
.card button:last-child { background: #e8eefb; color: #1f6feb; }
.msg { min-height: 18px; font-size: 13px; margin: 8px 0 0; }
.msg.err { color: #d23b3b; } .msg.ok { color: #1f9d55; }
.hint { font-size: 11px; color: #b06a00; background: #fff7e6; padding: 8px; border-radius: 8px; margin-top: 12px; }

header {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: #fff;
  box-shadow: 0 2px 10px rgba(20,40,80,.06); position: sticky; top: 0; z-index: 10;
}
header strong { color: #1f6feb; }
header nav { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
header nav button {
  border: none; background: #eef2f8; color: #41506b; padding: 8px 12px; border-radius: 8px;
  font-size: 13px; cursor: pointer;
}
header nav button.active { background: #1f6feb; color: #fff; }
header #btnLogout { border: none; background: #fdeaea; color: #d23b3b; padding: 8px 12px; border-radius: 8px; cursor: pointer; }

#content { max-width: 920px; margin: 0 auto; padding: 18px 16px 60px; }
.panel-title { font-size: 18px; font-weight: 600; margin: 6px 0 14px; }
.grid { display: grid; gap: 12px; }
@media(min-width: 640px){ .grid { grid-template-columns: 1fr 1fr; } }
.tile {
  background: #fff; border-radius: 14px; padding: 16px; box-shadow: 0 3px 14px rgba(20,40,80,.05);
  border-left: 4px solid #1f6feb;
}
.tile.warn { border-left-color: #e6a700; }
.tile.done { border-left-color: #1f9d55; opacity: .72; }
.tile h3 { margin: 0 0 6px; font-size: 15px; }
.tile p { margin: 4px 0; color: #5a6678; font-size: 13px; }
.tile .meta { font-size: 12px; color: #95a0b3; }
.tile button { margin-top: 10px; border: none; background: #1f6feb; color: #fff; padding: 8px 12px; border-radius: 8px; font-size: 13px; cursor: pointer; }
.tile.done button { background: #cfd8e6; color: #41506b; }

.btn {
  border: none; background: #1f6feb; color: #fff; padding: 10px 16px; border-radius: 10px;
  font-size: 14px; cursor: pointer; margin: 6px 6px 6px 0;
}
.btn.ghost { background: #e8eefb; color: #1f6feb; }
.row-flex { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 10px 0; }
.upload-box {
  border: 2px dashed #c4d0e2; border-radius: 12px; padding: 22px; text-align: center; color: #6b7689;
  cursor: pointer; margin: 12px 0;
}
.list { list-style: none; padding: 0; margin: 0; }
.list li {
  background: #fff; border-radius: 10px; padding: 12px 14px; margin: 8px 0; box-shadow: 0 2px 8px rgba(20,40,80,.04);
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.list li .name { font-weight: 500; }
.list li .sub { font-size: 12px; color: #95a0b3; }
.tag { font-size: 11px; padding: 2px 8px; border-radius: 6px; background: #eef2f8; color: #41506b; }
.tag.red { background: #fdeaea; color: #d23b3b; }
.note { font-size: 13px; color: #5a6678; line-height: 1.7; }
.note h2 { font-size: 16px; color: #1f6feb; margin: 18px 0 6px; }
.kv { font-size: 13px; color: #5a6678; }
.spinner { color: #95a0b3; font-size: 13px; }