/* ── 视觉基调：安静、克制、可靠。一层主强调，不多色。 ── */
:root {
  color-scheme: light;
  --background: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5b6675;
  --faint: #7a8494;
  --border: #c9d0d9;
  --border-soft: #e3e7ec;
  --accent: #2f6fae;
  --accent-soft: #eef4fb;
  --accent-border: #b9d0e8;
  --warning-bg: #fff8e6;
  --warning-border: #eedc9a;
  --danger-bg: #fdecec;
  --danger-border: #f2b8b5;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--background); color: var(--text);
  font: 16px/1.65 -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 24px 16px 64px; }
header {
  max-width: 680px; margin: 0 auto; padding: 14px 16px 0;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { font-weight: 600; letter-spacing: 0.02em; }
header button { min-height: 36px; padding: 0 14px; font-size: 14px; }
h1 { font-size: 26px; line-height: 1.3; margin: 8px 0 4px; }
h2 { font-size: 17px; margin: 26px 0 8px; }
.sub { color: var(--muted); margin: 0 0 18px; }
.fine { color: var(--faint); font-size: 13px; line-height: 1.6; }
textarea, input[type="text"], input[type="password"] {
  width: 100%; min-height: 48px; padding: 12px; font: inherit;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface); resize: vertical;
}
textarea:focus, input[type="text"]:focus, input[type="password"]:focus {
  outline: 2px solid var(--accent); border-color: transparent;
}
button { font: inherit; min-height: 46px; border-radius: 10px; border: 1px solid transparent; cursor: pointer; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button.primary { background: var(--accent); color: #fff; padding: 0 22px; width: 100%; margin-top: 10px; }
button.primary:disabled { background: #9db4e8; cursor: default; }
button.ghost { background: var(--surface); border-color: var(--border); color: var(--text); padding: 0 16px; }
.card { background: var(--surface); border: 1px solid var(--border-soft); border-radius: 12px; padding: 14px 16px; margin: 10px 0; }
.action {
  background: var(--accent-soft); border: 1px solid var(--accent-border); border-radius: 12px;
  padding: 18px; margin: 10px 0 6px; font-size: 18px; line-height: 1.6;
}
.action .act-text { word-break: break-word; }
.action .done-when {
  margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--accent-border);
  font-size: 15px; color: var(--muted);
}
.action .copy { margin-top: 12px; margin-right: 8px; }
.action .fine { margin-top: 8px; }
.want { font-size: 15px; color: var(--muted); }
.bring-back { margin-top: 14px; }
.bring-back .fine { margin-bottom: 4px; }

/* 第二层信息：默认收起，安静可展开 */
details.more { margin: 12px 0; border: 1px solid var(--border-soft); border-radius: 12px; background: var(--surface); }
details.more summary {
  cursor: pointer; padding: 12px 16px; font-size: 14px; color: var(--muted);
  list-style: none; min-height: 44px; display: flex; align-items: center;
}
details.more summary::-webkit-details-marker { display: none; }
details.more summary::before { content: '▸'; margin-right: 8px; color: var(--faint); }
details.more[open] summary::before { content: '▾'; }
details.more[open] summary { border-bottom: 1px solid var(--border-soft); }
details.more .more-body { padding: 4px 12px 12px; }
.handoff { margin-top: 12px; border-top: 1px dashed var(--accent-border); padding-top: 10px; }
.handoff .task {
  background: var(--surface); border: 1px dashed var(--border); border-radius: 8px;
  padding: 10px 12px; margin: 8px 0; font-size: 14px; line-height: 1.6; white-space: pre-wrap; word-break: break-word;
}
.handoff .copy, .handoff .openlink { margin-right: 8px; }
a.openlink {
  display: inline-block; min-height: 46px; line-height: 44px; padding: 0 16px; margin-top: 8px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px; color: var(--text); text-decoration: none;
}
.restore button { margin-left: 10px; min-height: 34px; padding: 0 12px; }
.fresh-wrap { text-align: center; margin: 26px 0 8px; }
ul { margin: 6px 0; padding-left: 20px; }
li { margin: 6px 0; }
.src { font-size: 13px; color: var(--muted); margin-top: 6px; word-break: break-all; }
.badge {
  display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--muted); margin-right: 6px; vertical-align: 1px;
}
.badge.official { border-color: #166534; color: #166534; }
.badge.trusted { border-color: #92400e; color: #92400e; }
.badge.unverified { border-color: #b91c1c; color: #b91c1c; }
.notice { background: var(--warning-bg); border: 1px solid var(--warning-border); border-radius: 12px; padding: 12px 14px; margin: 10px 0; font-size: 14px; }
.err { background: var(--danger-bg); border: 1px solid var(--danger-border); border-radius: 12px; padding: 14px 16px; margin: 10px 0; }
.err button { margin-top: 10px; }
.feedback { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
.feedback button { flex: 1; min-width: 140px; }
.thinking { font-size: 18px; }
.qa { display: flex; flex-direction: column; gap: 8px; }

/* ── 首页：一个问题就是整个页面 ── */
.hero { padding-top: 12vh; }
.hero h1 { font-size: 28px; margin: 0 0 6px; letter-spacing: 0.01em; }
.hero .sub { font-size: 15px; margin-bottom: 22px; }
.hero textarea { min-height: 120px; font-size: 17px; }
.hero .fine { margin-top: 14px; max-width: 34em; }
@media (min-width: 768px) {
  .hero { padding-top: 18vh; }
  .hero h1 { font-size: 32px; }
}

/* ── 登录页：门就是门 ── */
body.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
body.login-page main { width: 100%; max-width: 340px; padding: 24px 20px 40px; margin: 0; }
body.login-page h1 { font-size: 22px; text-align: center; margin: 0 0 2px; letter-spacing: 0.02em; }
body.login-page .sub { text-align: center; margin-bottom: 26px; }
body.login-page label { display: block; font-size: 14px; color: var(--muted); margin: 14px 0 6px; }
body.login-page input { min-height: 48px; }
body.login-page button.primary { margin-top: 22px; min-height: 48px; }
body.login-page .err, body.login-page .notice { margin-top: 18px; }
@media (min-width: 480px) {
  main button.primary { width: auto; }
  body.login-page button.primary { width: 100%; }
}