/* issue 193 場景 netskope-builder：試寫一條規則（可選左欄四層清單）。真的 fieldset／radio，晶片樣式只是 label 的外觀（input 視覺隱藏但可聚焦，label 疊在上層，點晶片即選取）；結果欄 aria-live。
   ≥62rem 兩欄：左欄選項、右欄判定面板（結果＋命中規則）。沒有 JS 時結果欄顯示預設選項的判定並列出全部規則（.nb-rules），有 JS 時規則清單隱藏（它同時是 JS 讀取規則的來源）。 */
.page-blocks .nb { display: grid; gap: 1.25rem; padding: clamp(1.25rem, 2.6vw, 2rem); border: 1px solid var(--on-dark-line); border-radius: var(--r-card); background: var(--deeper); color: var(--paper); box-shadow: var(--elevation-card); }
@media (min-width: 62rem) {
  .page-blocks .nb { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(1.5rem, 3vw, 2.5rem); align-items: stretch; }
}
.page-blocks .nb-set { min-width: 0; margin: 0 0 1rem; padding: 0; border: 0; }
.page-blocks .nb-form .nb-set:last-child { margin-bottom: 0; }
.page-blocks .nb-set legend { margin: 0 0 .5rem; padding: 0; color: var(--muted-on-dark); font-size: .75rem; font-weight: 700; letter-spacing: .14em; }
.page-blocks .nb-chip { position: relative; display: inline-block; margin: 0 .5rem .5rem 0; }
.page-blocks .nb-chip input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.page-blocks .nb-chip label { position: relative; z-index: 1; cursor: pointer; display: inline-flex; align-items: center; min-height: 2.75rem; padding: 0 1rem; border: 1px solid var(--on-dark-line); border-radius: var(--r-pill); color: var(--paper); font-size: .9375rem; font-weight: 700; transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease); }
.page-blocks .nb-chip input:hover + label { border-color: var(--accent-dark); }
.page-blocks .nb-chip input:checked + label { border-color: var(--accent); background: var(--accent); color: var(--accent-on); }
.page-blocks .nb-chip input:focus-visible + label { outline: 3px solid var(--accent-dark); outline-offset: 3px; }
.page-blocks .nb-panel { display: flex; flex-direction: column; gap: .875rem; min-width: 0; padding: clamp(1rem, 2vw, 1.5rem); border: 1px solid var(--on-dark-line); border-radius: var(--radius-m); background: color-mix(in srgb, var(--paper) 4%, var(--deeper)); }
.page-blocks .nb-out { margin: 0; padding: 1.125rem 1.25rem; min-height: 8.5rem; border: 1px solid var(--accent-dark); border-radius: var(--radius-m); background: color-mix(in srgb, var(--accent) 14%, var(--deeper)); }
.page-blocks .nb-out b { display: block; margin-bottom: .375rem; color: var(--accent-dark); font-size: 1.5rem; font-weight: 900; line-height: 1.3; text-wrap: balance; }
.page-blocks .nb-out b::before { content: "✓ " / ""; }
.page-blocks .nb-out span { color: var(--paper); font-size: .9375rem; line-height: 1.7; }
.page-blocks .nb-out[data-tone="block"] { border: 2px solid var(--accent); background: var(--accent); }
.page-blocks .nb-out[data-tone="block"] :is(b, span) { color: var(--accent-on); }
.page-blocks .nb-out[data-tone="block"] b::before { content: "✕ " / ""; }
.page-blocks .nb-out[data-tone="coach"] { border-style: dashed; border-color: var(--accent-dark); }
.page-blocks .nb-out[data-tone="coach"] b::before { content: "◐ " / ""; }
.page-blocks .nb-out[data-tone="decide"] { border-width: 1px 1px 1px .375rem; background: color-mix(in srgb, var(--paper) 8%, var(--deeper)); }
.page-blocks .nb-out[data-tone="decide"] b { color: var(--paper); }
.page-blocks .nb-out[data-tone="decide"] b::before { content: "？ " / ""; color: var(--accent-dark); }
.page-blocks .nb-rule { margin: 0; padding: .75rem 1rem; border-left: 3px solid var(--accent-dark); color: var(--paper); font-size: .9375rem; line-height: 1.6; }
.page-blocks .nb-rule small { display: block; margin-bottom: .125rem; color: var(--muted-on-dark); font-size: .6875rem; font-weight: 700; letter-spacing: .14em; }
.page-blocks .nb-rules { margin: 0; padding-left: 1.25rem; color: var(--muted-on-dark); font-size: .875rem; line-height: 1.7; }
.page-blocks .nb-rules b { color: var(--paper); }
.page-blocks .nb.is-live .nb-rules { display: none; }
.page-blocks .nb-note { margin: auto 0 0; color: var(--muted-on-dark); font-size: .75rem; letter-spacing: .08em; }
@media (prefers-reduced-motion: no-preference) {
  html:not([data-motion="off"]) .page-blocks .nb-panel.is-swap :is(.nb-out, .nb-rule) { animation: nb-swap .45s var(--ease) both; }
  html:not([data-motion="off"]) .page-blocks .nb-panel.is-swap .nb-rule { animation-delay: .06s; }
  @keyframes nb-swap { from { opacity: 0; transform: translateY(.625rem); } to { opacity: 1; transform: none; } }
}
@media (prefers-reduced-motion: reduce) { .page-blocks .nb-chip label { transition: none; } }
html[data-motion="off"] .page-blocks .nb-chip label { transition: none; }

/* 左欄四層清單（選用）：≥69rem 左清單、右組合器並排，窄螢幕上下堆疊。清單在頁面底色上（用 --ink），組合器維持深色卡片。 */
.page-blocks .nb:not(.nb--lay) .nb-box { display: contents; }
.page-blocks .nb--lay { display: grid; gap: clamp(2rem, 4vw, 3rem); padding: 0; border: 0; border-radius: 0; background: none; color: var(--ink); box-shadow: none; align-items: start; }
@media (min-width: 69rem) { .page-blocks .nb--lay { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(3rem, 5vw, 4rem); } }
.page-blocks .nb-layers { display: grid; margin: 0; padding: 0; list-style: none; counter-reset: nbl; }
.page-blocks .nb-layers li { position: relative; display: grid; gap: .375rem 2rem; align-items: center; padding: 1.5rem 0; border-top: 1px solid var(--line); counter-increment: nbl; }
.page-blocks .nb-layers li:last-child { border-bottom: 1px solid var(--line); }
@media (min-width: 75rem) { .page-blocks .nb-layers li { grid-template-columns: 10.5rem minmax(0, 1fr); } }
.page-blocks .nb-layers b { color: var(--ink); font-size: clamp(1.625rem, 3vw, 2.5rem); font-weight: 900; letter-spacing: -.02em; line-height: 1.2; }
.page-blocks .nb-layers b::before { content: "0" counter(nbl) / ""; display: block; margin-bottom: .25rem; color: var(--accent-ink); font-size: .8125rem; font-weight: 700; letter-spacing: .2em; }
.page-blocks .nb-layers span { max-width: 56ch; color: var(--ink); font-size: 1.0625rem; line-height: 1.7; }
.page-blocks .nb--lay .nb-box { display: grid; gap: 1rem; min-width: 0; padding: clamp(1.25rem, 2.6vw, 1.75rem); border: 1px solid var(--on-dark-line); border-radius: var(--r-card); background: var(--deeper); color: var(--paper); box-shadow: var(--elevation-card); }
@media (min-width: 69rem) { .page-blocks .nb--lay .nb-box { position: sticky; top: 6rem; } }
.page-blocks .nb-title { margin: 0; color: var(--paper); font-size: 1.375rem; font-weight: 800; line-height: 1.3; }
.page-blocks .nb--lay .nb-panel { padding: 0; border: 0; background: none; }

/* issue 371：提示行放在右側規則面板內（深色底），顏色用品牌強調色，間距交給面板的 gap。 */
.page-blocks .nb-box .cfh-line { --cfh-line: var(--accent-dark); margin: 0; }