:root {
  --bg: #0f1115;
  --card: #171a21;
  --line: #262b36;
  --fg: #e6e9ef;
  --dim: #8b93a7;
  --accent: #5b8cff;
  --s0: #ff4d4f;
  --s1: #ff7a45;
  --s2: #f7b500;
  --s3: #52c41a;
  --s4: #13c2c2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.6 system-ui, -apple-system, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", sans-serif;
}

.wrap { max-width: 760px; margin: 0 auto; padding: 40px 20px 64px; }

header h1 { margin: 0 0 8px; font-size: 26px; letter-spacing: .02em; }
.sub { margin: 0 0 28px; color: var(--dim); }
.sub strong { color: var(--fg); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 18px;
}

label { display: block; font-size: 13px; color: var(--dim); margin-bottom: 6px; }

input[type="text"] {
  width: 100%;
  padding: 11px 13px;
  background: #0d0f13;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--fg);
  font: 16px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
input[type="text"]:focus { outline: none; border-color: var(--accent); }

.advanced { margin-top: 16px; }
.advanced summary { cursor: pointer; color: var(--dim); font-size: 13px; }
.advanced summary:hover { color: var(--fg); }
.advanced > *:not(summary) { margin-top: 12px; }

.hint { color: var(--dim); font-size: 13px; margin: 4px 0 10px; }

/* 强度条 */
.score-row { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.bar { display: flex; gap: 5px; flex: 1; }
.seg {
  flex: 1; height: 9px; border-radius: 5px;
  background: var(--line);
  transition: background .18s ease;
}
.seg[data-on="1"]:nth-child(1) { background: var(--s0); }
.seg[data-on="1"]:nth-child(2) { background: var(--s1); }
.seg[data-on="1"]:nth-child(3) { background: var(--s2); }
.seg[data-on="1"]:nth-child(4) { background: var(--s3); }
.seg[data-on="1"]:nth-child(5) { background: var(--s4); }
.score-label { font-weight: 600; min-width: 5.5em; text-align: right; }

.stats { display: flex; gap: 28px; margin: 0 0 22px; flex-wrap: wrap; }
.stats div { margin: 0; }
.stats dt { font-size: 12px; color: var(--dim); }
.stats dd {
  margin: 2px 0 0;
  font: 20px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

h2 { font-size: 14px; margin: 24px 0 8px; color: var(--dim); font-weight: 600; }

table.times { width: 100%; border-collapse: collapse; font-size: 14px; }
table.times th, table.times td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); }
table.times th { color: var(--dim); font-weight: 500; font-size: 12px; }
table.times td:last-child { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

ul.patterns { list-style: none; margin: 0; padding: 0; }
ul.patterns li {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 14px;
}
ul.patterns li.empty { color: var(--dim); }
.tag {
  font-size: 11px; padding: 2px 7px; border-radius: 20px;
  background: #232936; color: var(--accent); white-space: nowrap;
}
ul.patterns code {
  background: #0d0f13; padding: 2px 6px; border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
}
ul.patterns .g { margin-left: auto; color: var(--dim); font-size: 13px; white-space: nowrap; }
ul.patterns .idx { color: #565e72; font-size: 12px; font-family: ui-monospace, monospace; }

.feedback { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.warning { margin: 0 0 8px; color: var(--s2); font-weight: 500; }
.warning:empty { display: none; }
ul.suggestions { margin: 0; padding-left: 20px; color: var(--dim); font-size: 14px; }
ul.suggestions li { margin: 3px 0; }

footer { color: #6b7386; font-size: 13px; margin-top: 8px; }
footer a, .sub a { color: var(--accent); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }