:root {
  --ink: #1f1d1a;
  --sub: #5f5a52;
  --line: #e4ddd0;
  --bg: #faf8f4;
  --card: #ffffff;
  --gold: #a07c3b;
  --gold-soft: #f3ead8;
  --warn: #8a3b12;
  --warn-bg: #fbefe7;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.75 "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif; }
.top { display: flex; align-items: baseline; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--line); background: var(--card); flex-wrap: wrap; }
.brand { font-weight: 700; letter-spacing: .08em; }
.title { color: var(--sub); }
.shop { margin-left: auto; color: var(--gold); font-weight: 600; }
main { max-width: 720px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 16px; margin-bottom: 16px; }
h1 { font-size: 20px; margin: 0 0 8px; }
h2 { font-size: 16px; margin: 0 0 8px; }
.about ul { margin: 0 0 8px; padding-left: 1.2em; }
.warn { margin: 0; padding: 8px 12px; background: var(--warn-bg); color: var(--warn); border-radius: 4px; font-size: 14px; }
label { display: block; font-weight: 600; margin-bottom: 4px; }
input, textarea { width: 100%; font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 4px; background: #fff; }
textarea { resize: vertical; }
button { font: inherit; padding: 10px 20px; border: 1px solid var(--gold); background: var(--gold-soft); color: var(--ink); border-radius: 4px; cursor: pointer; }
button:disabled { opacity: .5; cursor: wait; }
#login-form button { margin-top: 12px; }
.row { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
.count { color: var(--sub); font-size: 13px; }
.error { color: var(--warn); margin: 8px 0 0; min-height: 1em; }
.thread { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.msg { padding: 12px 14px; border-radius: 6px; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.q { align-self: flex-end; max-width: 90%; background: var(--gold-soft); }
.msg.a { background: var(--card); border: 1px solid var(--line); }
.msg .tag { display: inline-block; font-size: 12px; padding: 0 8px; border-radius: 4px; margin-bottom: 6px; border: 1px solid var(--line); color: var(--sub); }
.msg .tag.escalate, .msg .tag.request { border-color: var(--gold); color: var(--gold); }
.msg .tag.caution { border-color: var(--warn); color: var(--warn); }
.msg.wait { color: var(--sub); }
.past summary { cursor: pointer; font-weight: 600; }
.past .item { border-top: 1px solid var(--line); padding: 10px 0; }
.past .when { color: var(--sub); font-size: 13px; }
.past .pq { font-weight: 600; white-space: pre-wrap; overflow-wrap: anywhere; }
.past .pa { white-space: pre-wrap; overflow-wrap: anywhere; }
.link { border: none; background: none; color: var(--sub); text-decoration: underline; padding: 0; }
.logout { text-align: center; }