:root {
  --bg: #e8edf4;
  --bg-top: #dfe6f0;
  --panel: #f6f8fb;
  --panel-elevated: #ffffff;
  --muted: #6b7a8f;
  --text: #3d4a5c;
  --text-heading: #4a5568;
  --accent: #3d9a6e;
  --warn: #c75c5c;
  --focus: #5b8fd4;
  --chip: #eef2f7;
  --sep: #d4dce8;
  --shadow: rgba(61, 74, 92, 0.08);
  --shadow-strong: rgba(61, 74, 92, 0.12);
  --input-bg: #fafbfd;
  --hover-bg: #eef3f9;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 45%, #e4eaf2 100%);
  color: var(--text);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
  display: grid;
  place-items: start center;
  padding: 24px;
}
.app {
  width: min(980px, 100%);
  background: var(--panel-elevated);
  border: 1px solid var(--sep);
  border-radius: 16px;
  padding: 20px 20px 8px;
  box-shadow: 0 8px 32px var(--shadow), 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
header h1 {
  font-size: 20px;
  margin: 0;
  letter-spacing: 0.5px;
  color: var(--text-heading);
  font-weight: 700;
}
header .right {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
  flex-wrap: wrap;
}
.nav-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.nav-tabs a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--sep);
  font-size: 14px;
  background: var(--chip);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.nav-tabs a:hover {
  color: var(--text);
  background: var(--hover-bg);
  border-color: color-mix(in sRGB, var(--focus), var(--sep) 60%);
}
.nav-tabs a.is-active {
  color: var(--text-heading);
  background: var(--panel-elevated);
  border-color: color-mix(in sRGB, var(--focus), var(--sep) 40%);
  box-shadow: 0 0 0 3px color-mix(in sRGB, var(--focus), transparent 88%) inset;
}
.grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 16px; }
@media (max-width: 880px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: color-mix(in sRGB, var(--panel) 85%, var(--panel-elevated));
  border: 1px solid var(--sep);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 1px 3px var(--shadow);
}
.card h2 {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--text-heading);
  font-weight: 600;
}
textarea,
input[type="text"],
input[type="password"] {
  width: 100%;
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--sep);
  border-radius: 10px;
  padding: 12px;
  resize: vertical;
  outline: none;
  min-height: 44px;
  font-size: 14px;
  line-height: 1.45;
  transition: border-color 0.2s, box-shadow 0.2s;
}
textarea:focus,
input[type="text"]:focus,
input[type="password"]:focus {
  border-color: color-mix(in sRGB, var(--focus), var(--sep) 35%);
  box-shadow: 0 0 0 3px color-mix(in sRGB, var(--focus), transparent 88%);
}
textarea { min-height: 120px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row + .row { margin-top: 10px; }
.muted { color: var(--muted); font-size: 13px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--chip);
  border: 1px solid var(--sep);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 13px;
}
.btn {
  appearance: none;
  border: 1px solid var(--sep);
  color: var(--text);
  background: var(--panel-elevated);
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.02s ease, background 0.2s, border-color 0.2s;
  text-decoration: none;
}
.btn:hover {
  background: var(--hover-bg);
  border-color: color-mix(in sRGB, var(--focus), var(--sep) 55%);
}
.btn:active { transform: translateY(1px); }
.btn.primary {
  border-color: color-mix(in sRGB, var(--focus), var(--sep) 30%);
  background: color-mix(in sRGB, var(--focus), var(--panel-elevated) 92%);
  color: #2c5282;
}
.btn.primary:hover {
  background: color-mix(in sRGB, var(--focus), var(--panel-elevated) 85%);
}
.btn.success {
  border-color: color-mix(in sRGB, var(--accent), var(--sep) 25%);
  color: #2d6a4f;
}
.btn.success:hover {
  background: color-mix(in sRGB, var(--accent), var(--panel-elevated) 90%);
}
.btn.danger {
  border-color: color-mix(in sRGB, var(--warn), var(--sep) 25%);
  color: #9b4d4d;
}
.btn.danger:hover {
  background: color-mix(in sRGB, var(--warn), var(--panel-elevated) 92%);
}
.btn.ghost {
  background: transparent;
}
.btn.ghost:hover {
  background: var(--hover-bg);
}
.btn[disabled] { opacity: 0.55; cursor: not-allowed; }
.stack { display: grid; gap: 10px; }
.center {
  display: grid;
  place-items: center;
  min-height: 200px;
  border: 1px dashed color-mix(in sRGB, var(--sep), var(--focus) 15%);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  background: color-mix(in sRGB, var(--chip), var(--panel-elevated) 50%);
}
.name {
  font-size: clamp(26px, 6vw, 46px);
  font-weight: 700;
  letter-spacing: 0.5px;
  text-align: center;
  margin: 6px 0 12px;
  color: var(--text-heading);
}
.absent-list-hint {
  width: 100%;
  margin: 0 0 8px;
  font-size: 12px;
}
.pill--removable {
  appearance: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.pill--removable:hover {
  border-color: color-mix(in sRGB, var(--warn), var(--sep) 30%);
  background: color-mix(in sRGB, var(--warn), var(--chip) 88%);
  color: #9b4d4d;
}
.pill--removable:focus-visible {
  outline: 2px solid color-mix(in sRGB, var(--warn), var(--sep) 40%);
  outline-offset: 2px;
}
.controls { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.controls .btn { font-size: 16px; padding: 12px 18px; }
.divider { height: 1px; background: var(--sep); margin: 12px 0; }
.list { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  background: var(--chip);
  border: 1px solid var(--sep);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
}
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
@media (max-width: 560px) { .stats { grid-template-columns: 1fr; } }
.stat {
  background: var(--panel-elevated);
  border: 1px solid var(--sep);
  border-radius: 10px;
  padding: 12px;
  display: grid;
  gap: 4px;
  text-align: center;
  box-shadow: 0 1px 2px var(--shadow);
}
.stat .num {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-heading);
}
footer {
  margin-top: 8px;
  padding: 10px;
  color: var(--muted);
  text-align: center;
  font-size: 12px;
}
a.link {
  color: #4a7ab8;
  text-decoration: none;
}
a.link:hover { text-decoration: underline; }
.notice {
  background: color-mix(in sRGB, var(--focus), var(--panel-elevated) 92%);
  border: 1px solid color-mix(in sRGB, var(--focus), var(--sep) 50%);
  border-radius: 10px;
  padding: 12px;
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
}
.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.preset-card {
  background: var(--panel-elevated);
  border: 1px solid var(--sep);
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  box-shadow: 0 1px 2px var(--shadow);
}
.preset-card:hover {
  border-color: color-mix(in sRGB, var(--focus), var(--sep) 40%);
  background: var(--hover-bg);
  box-shadow: 0 4px 12px var(--shadow);
}
.preset-card.is-locked::after {
  content: "需验证";
  font-size: 11px;
  color: var(--muted);
  display: block;
  margin-top: 6px;
}
.preset-card.is-open {
  border-color: color-mix(in sRGB, var(--accent), var(--sep) 30%);
  background: color-mix(in sRGB, var(--accent), var(--panel-elevated) 94%);
}
.preset-card h3 {
  margin: 0 0 4px;
  font-size: 15px;
  color: var(--text-heading);
}
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(61, 74, 92, 0.35);
  backdrop-filter: blur(4px);
  display: none;
  place-items: center;
  padding: 20px;
  z-index: 1000;
}
.modal-mask.show { display: grid; }
.modal {
  width: min(400px, 100%);
  background: var(--panel-elevated);
  border: 1px solid var(--sep);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 16px 48px var(--shadow-strong);
}
.modal h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--text-heading);
}
.modal .row { margin-top: 12px; justify-content: flex-end; }