:root {
  --bg: #f4f6f8; --card: #fff; --ink: #1b1f24; --muted: #5d6672; --line: #d5dbe2;
  --pri: #2f6fb5; --pri-bg: #eaf2fb; --ok: #2f9e7a; --ok-bg: #e8f6f1; --warn: #c0392b; --warn-bg: #fdeceb;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 22px; line-height: 1.6;
}
header {
  background: var(--card); border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 16px 24px;
}
header h1 { font-size: 26px; margin: 0; }
header .who { color: var(--muted); font-size: 19px; }
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 80px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 24px; margin-bottom: 20px; }
.card h2 { font-size: 24px; margin: 0 0 16px; }
label { display: block; font-size: 19px; color: var(--muted); margin-bottom: 6px; }
input, select {
  width: 100%; font: inherit; padding: 12px 14px; border: 2px solid var(--line);
  border-radius: 10px; background: #fff;
}
input:focus { outline: none; border-color: var(--pri); }
input.unclear { border-color: var(--warn); background: var(--warn-bg); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.req::after { content: " *"; color: var(--warn); }
button, .btn {
  font: inherit; font-weight: 700; padding: 12px 26px; border-radius: 10px; border: 0;
  background: var(--pri); color: #fff; cursor: pointer; text-decoration: none; display: inline-block;
}
button.ghost, .btn.ghost { background: transparent; color: var(--pri); border: 2px solid var(--pri); }
button.danger { background: var(--warn); }
button:disabled { opacity: .5; cursor: wait; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.msg { padding: 14px 18px; border-radius: 10px; margin: 12px 0; display: none; }
.msg.show { display: block; }
.msg.ok { background: var(--ok-bg); color: #1d6b52; }
.msg.err { background: var(--warn-bg); color: var(--warn); }
.hint { color: var(--muted); font-size: 18px; }
#preview { max-width: 100%; max-height: 360px; border-radius: 10px; border: 1px solid var(--line); display: none; margin-top: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 18px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--pri-bg); white-space: nowrap; }
.tablewrap { overflow-x: auto; }
.login { max-width: 460px; margin: 60px auto; }
.login .card > div { margin-bottom: 18px; }
.muted { color: var(--muted); }
.big { font-size: 28px; font-weight: 700; }