/* P0 手写基础样式：覆盖当前用到的工具类。
 * 后续 UI 扩展时切换为 Tailwind standalone CLI 构建（Makefile 已预留 css 目标）。 */
*, ::before, ::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: ui-sans-serif, system-ui, "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.5; }
a { color: inherit; }

.min-h-screen { min-height: 100vh; }
.bg-neutral-50 { background: #fafafa; }
.bg-white { background: #fff; }
.text-neutral-900 { color: #171717; }
.text-neutral-600 { color: #525252; }
.text-neutral-500 { color: #737373; }
.text-blue-600 { color: #2563eb; }
.border-b { border-bottom: 1px solid #e5e5e5; }
.border { border: 1px solid #e5e5e5; }
.rounded-lg { border-radius: .5rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-3 { padding-top: .75rem; padding-bottom: .75rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.mt-2 { margin-top: .5rem; }
.mt-4 { margin-top: 1rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.max-w-5xl { max-width: 64rem; }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-6 { gap: 1.5rem; }
.font-bold { font-weight: 700; }
.text-2xl { font-size: 1.5rem; }
.text-sm { font-size: .875rem; }
.list-disc { list-style: disc; }
.pl-6 { padding-left: 1.5rem; }
.underline { text-decoration: underline; }
.gap-3 { gap: .75rem; }
.mt-3 { margin-top: .75rem; }
.block { display: block; }

.field-input {
  display: block; width: 100%; margin-top: .25rem; padding: .5rem .75rem;
  border: 1px solid #d4d4d4; border-radius: .375rem; font-size: .95rem;
}
.field-input:focus { outline: 2px solid #2563eb; outline-offset: -1px; }
.btn {
  margin-top: 1.25rem; width: 100%; padding: .6rem 1rem; cursor: pointer;
  background: #2563eb; color: #fff; border: 0; border-radius: .375rem; font-size: .95rem;
}
.btn:hover { background: #1d4ed8; }
.btn-sm { display:inline-block; width:auto; margin-top:0; padding:.35rem .75rem; font-size:.85rem; }

table.ledger { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid #e5e5e5; border-radius: .5rem; }
table.ledger th, table.ledger td { text-align: left; padding: .5rem .75rem; border-bottom: 1px solid #f0f0f0; font-size: .9rem; }
table.ledger th { background: #fafafa; font-weight: 600; }
.mono { font-family: ui-monospace, monospace; background:#f5f5f5; padding:.15rem .4rem; border-radius:.25rem; }