:root {
  --page: #f4f6f8;
  --surface: #fff;
  --ink: #202a35;
  --muted: #586574;
  --line: #dce2e7;
  --accent: #17635d;
  --accent-hover: #104e49;
  --accent-soft: #e8f3ef;
  --danger: #a72b37;
  --danger-soft: #fff0f1;
  --focus: #267eae;
  --warning: #775115;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--page);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.65; }
[hidden] { display: none !important; }
::selection { background: #cee7e2; color: var(--ink); }
button, textarea { font: inherit; }
button { cursor: pointer; touch-action: manipulation; }
button, a, textarea { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
button:disabled { cursor: not-allowed; opacity: .55; }
button { transition: background-color 160ms ease-out, color 160ms ease-out; }
textarea { display: block; width: 100%; resize: vertical; min-height: 108px; border: 1px solid #aab6c0; border-radius: 8px; padding: 12px 14px; background: var(--surface); color: var(--ink); caret-color: var(--accent); line-height: 1.6; }
textarea::placeholder { color: #6c7681; }
textarea:focus { border-color: var(--accent); }
textarea[aria-invalid="true"] { border-color: var(--danger); }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 1.875rem; line-height: 1.4; font-weight: 650; letter-spacing: -.025em; }
h2 { font-size: 1rem; font-weight: 650; }
h3 { font-size: 1rem; font-weight: 600; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 5; transform: translateY(-180%); padding: 10px 16px; background: var(--ink); color: white; border-radius: 6px; }
.skip-link:focus { transform: translateY(0); }
.topbar { background: var(--surface); border-bottom: 1px solid var(--line); }
.topbar-inner { max-width: 1168px; margin: 0 auto; min-height: 76px; padding: 12px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; gap: 12px; align-items: center; color: var(--ink); font-size: 1.0625rem; font-weight: 650; text-decoration: none; white-space: nowrap; }
.brand svg { color: var(--accent); }
.account { display: flex; align-items: center; gap: 12px; min-width: 0; font-size: .875rem; color: var(--muted); }
#account-name { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.button-primary, .button-secondary, .button-danger { min-height: 44px; padding: 9px 18px; border: 1px solid transparent; border-radius: 8px; font-size: .9375rem; font-weight: 600; line-height: 1.5; }
.button-primary { background: var(--accent); color: white; }
.button-primary:hover:not(:disabled) { background: var(--accent-hover); }
.button-primary:active:not(:disabled) { background: #0b403c; }
.button-secondary { border-color: var(--line); background: var(--surface); color: var(--ink); }
.button-secondary:hover:not(:disabled) { background: var(--page); }
.button-danger { background: var(--danger); color: white; }
.button-danger:hover:not(:disabled) { background: #84202b; }
.button-text { min-height: 44px; padding: 8px 10px; border: 0; border-radius: 6px; background: transparent; color: var(--accent); font-size: .875rem; white-space: nowrap; }
.button-text:hover:not(:disabled) { background: var(--accent-soft); }
.danger { color: var(--danger); }
.danger:hover:not(:disabled) { background: var(--danger-soft); }
.settings-panel { max-width: 1168px; margin: 42px auto 24px; padding: 0 24px; }
.page-heading { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
.page-heading p { color: var(--muted); margin-top: 8px; }
.monitor-status { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; color: var(--accent); font-size: .875rem; }
.monitor-status::before { content: ""; width: 7px; height: 7px; background: currentColor; border-radius: 50%; }
.monitor-status.paused { color: var(--warning); }
.workspace { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 36px; align-items: start; }
.editor { min-width: 0; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); overflow: hidden; }
.rule-heading { display: flex; justify-content: space-between; align-items: center; gap: 22px; padding: 26px 28px 14px; }
.rule-heading p { margin-top: 4px; font-size: .875rem; color: var(--muted); }
.switch { flex-shrink: 0; width: 52px; height: 44px; padding: 0; border: 0; border-radius: 24px; background: transparent; position: relative; }
.switch::before { content: ""; display: block; position: absolute; inset: 7px 0; border-radius: 20px; background: #818c98; transition: background-color 160ms ease-out; }
.switch span { position: absolute; width: 22px; height: 22px; left: 4px; top: 11px; border-radius: 50%; background: var(--surface); transition: transform 160ms ease-out; }
.switch[aria-checked="true"]::before { background: var(--accent); }
.switch[aria-checked="true"] span { transform: translateX(22px); }
.filter-summary { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 16px; padding: 0 28px 24px; border-bottom: 1px solid var(--line); font-size: .8125rem; color: var(--muted); }
#filter-status { color: var(--accent); }
.add-form { padding: 24px 28px; }
label { display: block; font-weight: 600; margin-bottom: 5px; }
.field-hint { color: var(--muted); font-size: .8125rem; font-weight: 400; }
.add-form > .field-hint { margin-bottom: 12px; }
.form-actions { margin-top: 14px; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.form-actions .field-hint { flex: 1; min-width: 0; }
.form-actions .button-primary { flex-shrink: 0; }
.field-error { color: var(--danger); font-size: .875rem; margin-top: 8px; }
.list-heading { display: flex; justify-content: space-between; align-items: center; padding: 2px 28px 8px; gap: 12px; }
.count { margin-left: 8px; color: var(--muted); font-size: .8125rem; font-weight: 400; font-variant-numeric: tabular-nums; }
.keyword-list { list-style: none; margin: 0; padding: 0 28px 16px; }
.keyword-list li { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding: 7px 0; min-height: 58px; }
.keyword-text { min-width: 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.empty-state { padding: 20px 28px 40px; text-align: center; }
.empty-state svg { color: var(--muted); margin-bottom: 10px; }
.empty-state p { color: var(--muted); font-size: .875rem; margin-top: 6px; }
.sidebar { padding-top: 5px; min-width: 0; }
.explanation > p { color: var(--muted); font-size: .875rem; margin-top: 12px; }
.explanation ul { color: var(--muted); font-size: .8125rem; padding-left: 18px; margin: 14px 0 0; }
.explanation li + li { margin-top: 8px; }
.preview-section { margin-top: 30px; padding-top: 25px; border-top: 1px solid var(--line); }
.preview-section label { margin-top: 12px; margin-bottom: 8px; }
.preview-section textarea { font-size: .875rem; }
.preview-result { margin-top: 12px; font-size: .8125rem; color: var(--muted); overflow-wrap: anywhere; min-height: 44px; }
.preview-result.blocked { color: var(--danger); }
.preview-result.allowed { color: var(--accent); }
.paused-note { border-top: 1px solid var(--line); padding-top: 18px; margin-top: 22px; color: var(--warning); font-size: .8125rem; }
.clear-confirm { padding: 16px 20px; margin: 4px 28px 16px; background: var(--danger-soft); border-radius: 8px; font-size: .875rem; }
.clear-confirm > div { display: flex; gap: 10px; margin-top: 12px; }
.feedback { padding: 12px 16px; margin: 0 0 20px; background: var(--danger-soft); color: var(--danger); border-radius: 8px; font-size: .875rem; }
.page-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: .8125rem; color: var(--muted); margin-top: 20px; }
.login-panel { max-width: 480px; padding: 44px 32px 32px; margin: 10vh auto 32px; text-align: center; }
.login-symbol { color: var(--accent); margin-bottom: 22px; }
.login-panel h1 { font-size: 1.625rem; }
.login-panel > p { color: var(--muted); margin-top: 14px; }
.login-panel > .button-primary { margin-top: 26px; }
.login-panel > .button-secondary { margin: 16px 0 0 8px; }
.login-panel .login-feedback { min-height: 26px; font-size: .875rem; color: var(--accent); }
.login-panel .login-feedback.error { color: var(--danger); }
.login-panel .login-note { font-size: .8125rem; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.noscript { text-align: center; padding: 20px; color: var(--danger); }
@media (max-width: 850px) {
  .workspace { grid-template-columns: minmax(0, 1fr) 260px; gap: 24px; }
  .rule-heading, .add-form { padding-left: 22px; padding-right: 22px; }
  .filter-summary, .list-heading { padding-left: 22px; padding-right: 22px; }
  .keyword-list { padding-left: 22px; padding-right: 22px; }
}
@media (max-width: 680px) {
  .topbar-inner { min-height: 68px; padding: 10px 18px; gap: 8px; }
  .brand { font-size: .9375rem; gap: 8px; }
  #account-name { display: none; }
  .settings-panel { margin-top: 26px; padding: 0 18px; }
  h1 { font-size: 1.5rem; }
  .page-heading { align-items: flex-start; flex-direction: column; gap: 14px; margin-bottom: 22px; }
  .page-heading p { font-size: .875rem; }
  .workspace { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .rule-heading { padding: 21px 20px 12px; }
  .filter-summary { padding: 0 20px 20px; }
  .add-form { padding: 20px; }
  .list-heading { padding-left: 20px; padding-right: 12px; }
  .keyword-list { padding-left: 20px; padding-right: 12px; }
  .form-actions { align-items: flex-start; }
  .form-actions .button-primary { flex-shrink: 0; }
  .sidebar { padding: 0 2px; }
  .clear-confirm { margin-left: 20px; margin-right: 20px; }
  .page-footer { align-items: flex-start; margin-bottom: 22px; }
  .page-footer > span { max-width: 24ch; padding-top: 9px; }
  .login-panel { margin-top: 8vh; padding-left: 24px; padding-right: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}