/* 通用 tabs：每组由 data-tabs 包住，面板与 tab 用 aria-controls 对应。 */
.tabs { min-width: 0; }
.tab-rail, [role="tablist"].tab-rail {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 8px; margin-bottom: 28px; border-radius: var(--r-lg);
  background: var(--bg-panel); color: var(--text);
}
.tab-rail [role="tab"] {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 18px; border: 1px solid var(--clear);
  border-radius: var(--r-md); background: var(--clear); color: var(--text-muted);
  font-family: var(--font-body); font-size: 15px; font-weight: var(--weight-semibold);
}
.tab-rail [role="tab"]:hover { color: var(--accent); }
.tab-rail [role="tab"][aria-selected="true"] { background: var(--bg); color: var(--accent); box-shadow: var(--shadow-tight); }
.tab-panel { min-width: 0; }
.tab-panel:focus-visible { outline-offset: 6px; }
.toc {
  position: sticky; top: 16px; z-index: 8;
  display: flex; align-items: center; gap: 8px;
  overflow-x: auto; max-width: 100%; padding: 10px;
  border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg); color: var(--text); box-shadow: var(--shadow-tight);
  overscroll-behavior-x: contain;
}
.toc a {
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  min-height: 44px; padding: 9px 15px; border-radius: var(--r-pill);
  color: var(--text-muted); font-size: 14px; font-weight: var(--weight-semibold);
}
.toc a:hover, .toc a[aria-current="location"] { background: var(--accent-soft); color: var(--accent-dark); }
.toc-flow { position: static; }
.anchor-section { scroll-margin-top: 100px; }
.faq-item { border-bottom: 1px solid var(--border); padding-block: 6px; }
.faq-item summary {
  position: relative; list-style: none; cursor: pointer;
  padding: 21px 42px 21px 4px; font-size: 17px; font-weight: var(--weight-bold); line-height: 1.65;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 8px; top: 20px; color: var(--accent); font-size: 23px; line-height: 1.3; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer { padding: 0 4px 24px; color: var(--text-muted); line-height: 1.9; }
.faq-answer p + p { margin-top: 12px; }
.faq-answer a { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.term-card {
  min-width: 0; padding: 28px; border-radius: var(--r-xl);
  background: var(--bg-panel); color: var(--text);
}
.term-card h3 { margin-bottom: 8px; }
.term-alias { display: block; margin-bottom: 16px; font-family: var(--font-mono); font-size: 13px; color: var(--text-muted); overflow-wrap: anywhere; }
.term-card p { color: var(--text-muted); line-height: 1.85; }
.term-card .text-link { display: inline-block; margin-top: 18px; }
.badge-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.badge, .tag {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  max-width: 100%; padding: 4px 11px; border-radius: var(--r-pill);
  background: var(--bg-panel-2); color: var(--text-muted);
  font-size: 12px; line-height: 1.6; font-weight: var(--weight-semibold);
  white-space: normal; overflow-wrap: anywhere;
}
.badge-primary { background: var(--accent); color: var(--on-accent); }
.badge-recommended { background: var(--accent-soft); color: var(--accent-dark); }
.badge-archived { background: var(--bg-panel-2); color: var(--text-muted); border: 1px solid var(--border-strong); }
.badge-success { background: var(--bg-panel); color: var(--success-ink); }
.badge-warn { background: var(--bg-panel); color: var(--warn-ink); }
.badge-error { background: var(--bg-panel); color: var(--error-ink); }
.client-card {
  min-width: 0; padding: 30px; border: 1px solid var(--border);
  border-radius: var(--r-xl); background: var(--bg); color: var(--text);
  box-shadow: var(--shadow-float);
}
.client-card-featured { border-color: var(--accent-ring); }
.client-card-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.client-card-head > div { min-width: 0; flex: 1; }
.client-card-head h3 { margin-bottom: 8px; }
.client-icon { width: 56px; height: 56px; flex-shrink: 0; }
.client-card p { color: var(--text-muted); line-height: 1.9; }
.client-version { display: inline-block; margin-top: 12px; color: var(--text-muted); font-family: var(--font-mono); font-size: 13px; }
.client-version:empty { display: none; }
.client-facts { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; margin-block: 24px; padding-block: 20px; border-block: 1px solid var(--border); }
.client-facts > div { min-width: 0; }
.client-facts dt { color: var(--text-muted); font-size: 12px; margin-bottom: 5px; }
.client-facts dd { font-size: 14px; overflow-wrap: anywhere; }
.client-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.post-card {
  min-width: 0; display: flex; flex-direction: column; align-items: flex-start;
  padding: 28px; border: 1px solid var(--border); border-radius: var(--r-xl);
  background: var(--bg); color: var(--text); box-shadow: var(--shadow-tight);
  transition: transform var(--motion-fast),box-shadow var(--motion-fast);
}
.post-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-float); }
.post-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 18px; color: var(--text-muted); font-size: 12px; }
.post-card h3 { font-size: 20px; line-height: 1.6; margin-bottom: 12px; }
.post-card h3 a:hover { color: var(--accent); }
.post-card p { color: var(--text-muted); font-size: 14px; line-height: 1.9; margin-bottom: 22px; }
.post-card > .text-link { margin-top: auto; font-size: 14px; font-weight: var(--weight-semibold); }
.callout {
  min-width: 0; margin-block: 24px; padding: 22px 24px;
  border-left: 4px solid var(--accent); border-radius: var(--r-md);
  background: var(--bg-panel); color: var(--text);
}
.callout strong { display: block; margin-bottom: 6px; font-weight: var(--weight-bold); }
.callout p { margin: 0; color: var(--text-muted); line-height: 1.9; }
.callout-warning { border-left-color: var(--warn); }
.callout-error { border-left-color: var(--error); }
.callout-success { border-left-color: var(--success); }
.table-scroll { min-width: 0; max-width: 100%; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-lg); overscroll-behavior-x: contain; }
.data-table { width: 100%; border-collapse: collapse; background: var(--bg); color: var(--text); font-size: 14px; text-align: left; }
.data-table th, .data-table td, .prose table th, .prose table td, .article-body table th, .article-body table td {
  min-width: 7em; padding: 16px 20px; border-bottom: 1px solid var(--border);
  white-space: normal; overflow-wrap: normal; word-break: normal; vertical-align: top; line-height: 1.8;
}
.data-table th, .prose table th, .article-body table th { background: var(--bg-panel); color: var(--text); font-weight: var(--weight-bold); }
.data-table tr:last-child td { border-bottom: 0; }
.data-table caption { padding: 16px 20px; color: var(--text-muted); text-align: left; caption-side: bottom; }
.prose table, .article-body table {
  display: block; overflow-x: auto; -webkit-overflow-scrolling: touch;
  max-width: 100%; min-width: 0; width: 100%; border-collapse: collapse;
  margin-block: 24px; border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--bg); color: var(--text); overscroll-behavior-x: contain;
}
.data-table code, .prose table code, .article-body table code { overflow-wrap: anywhere; word-break: normal; }
.article-download {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px;
  min-width: 0; margin-top: 48px; padding: 28px;
  border: 1px solid var(--border); border-radius: var(--r-xl);
  background: var(--bg-panel); color: var(--text);
}
.article-download > div { min-width: 0; flex: 1 1 260px; }
.article-download h2 { font-size: 24px; margin: 0 0 8px; }
.article-download p { margin: 0; color: var(--text-muted); font-size: 15px; }
.dl-fab {
  position: fixed; right: 24px; bottom: max(24px,env(safe-area-inset-bottom)); z-index: 25;
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 58px; max-width: calc(100% - 32px); padding: 12px 20px;
  border: 1px solid var(--accent-dark); border-radius: var(--r-pill);
  background: var(--accent); color: var(--on-accent); box-shadow: var(--shadow-btn);
  font-size: 14px; line-height: 1.5; font-weight: var(--weight-bold);
}
.dl-fab:hover { background: var(--accent-dark); color: var(--on-accent); }
.dl-fab svg { width: 22px; height: 22px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.has-dl-fab .site-footer { padding-bottom: 110px; }

/* 订阅资料浏览器：左侧步骤式手风琴，右侧几何画板。 */
.feature-browser { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: 64px; align-items: center; }
.feature-browser > * { min-width: 0; }
.feature-list { display: flex; flex-direction: column; }
.feature-tab {
  position: relative; display: block; width: 100%; text-align: left;
  padding: 24px 0; border: 0; border-bottom: 1px solid var(--border);
  background: var(--bg); color: var(--text-muted); font-family: var(--font-body);
}
.feature-tab-label { display: flex; align-items: center; gap: 14px; font-size: 20px; line-height: 1.5; font-weight: var(--weight-bold); }
.feature-tab-label svg { width: 25px; height: 25px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.feature-tab[aria-selected="true"] { color: var(--text); }
.feature-tab[aria-selected="true"] .feature-tab-label svg { color: var(--accent); }
.feature-description { display: none; margin-top: 18px; font-size: 15px; font-weight: var(--weight-body); line-height: 1.95; color: var(--text-muted); }
.feature-tab[aria-selected="true"] .feature-description { display: block; }
.feature-progress { position: absolute; bottom: -1px; left: 0; right: 0; height: 3px; transform: scaleX(0); transform-origin: left; border-radius: var(--r-pill); background: var(--accent); color: var(--on-accent); }
.feature-tab[aria-selected="true"] .feature-progress { transform: scaleX(1); }
.tabs.is-auto .feature-tab[aria-selected="true"] .feature-progress { animation: feature-clock 9s linear both; }
.feature-board {
  min-height: 440px; display: grid; align-items: center; padding: 56px 36px;
  overflow: hidden; border-radius: var(--r-2xl);
  background: var(--bg-panel); color: var(--text);
}
.feature-board::before { content: ""; position: absolute; top: -110px; left: -120px; width: 380px; height: 240px; border-radius: var(--r-xl); background: var(--grad-geo); color: var(--text); transform: rotate(42deg); }
.feature-board::after { content: ""; position: absolute; width: 310px; height: 310px; right: -110px; bottom: -170px; border-radius: var(--r-circle); background: var(--accent); color: var(--on-accent); }
.interface-card { position: relative; z-index: 1; min-width: 0; padding: 26px; border: 1px solid var(--border); border-radius: var(--r-xl); background: var(--bg); color: var(--text); box-shadow: var(--shadow-float); }
.interface-card h3 { font-size: 17px; margin-bottom: 20px; }
.interface-card pre { font-size: 12px; padding: 16px; }
.interface-setting { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-block: 14px; border-bottom: 1px solid var(--border); font-size: 13px; }
.interface-setting:last-child { border-bottom: 0; }
.interface-setting code { color: var(--accent-dark); }
@keyframes feature-clock { from { transform: scaleX(0); } to { transform: scaleX(1); } }

/* 预览页仅用类名映射令牌，不通过内联样式传颜色。 */
.swatch-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 16px; }
.swatch { min-width: 0; border: 1px solid var(--border); border-radius: var(--r-md); overflow: hidden; }
.swatch-paint { height: 76px; background: var(--bg); color: var(--text); }
.swatch code { display: block; padding: 12px; font-size: 12px; }
.paint-bg { background: var(--bg); color: var(--text); }
.paint-panel { background: var(--bg-panel); color: var(--text); }
.paint-panel-2 { background: var(--bg-panel-2); color: var(--text); }
.paint-border { background: var(--border); color: var(--text); }
.paint-border-strong { background: var(--border-strong); color: var(--text); }
.paint-accent { background: var(--accent); color: var(--on-accent); }
.paint-accent-dark { background: var(--accent-dark); color: var(--on-accent); }
.paint-text { background: var(--text); color: var(--on-accent); }
.paint-muted { background: var(--text-muted); color: var(--on-accent); }
.paint-faint { background: var(--text-faint); color: var(--text); }
.paint-success { background: var(--success); color: var(--text); }
.paint-warn { background: var(--warn); color: var(--text); }
.paint-error { background: var(--error); color: var(--text); }
.paint-success-ink { background: var(--success-ink); color: var(--on-accent); }
.paint-warn-ink { background: var(--warn-ink); color: var(--on-accent); }
.paint-error-ink { background: var(--error-ink); color: var(--on-accent); }
.paint-on-accent { background: var(--on-accent); color: var(--text); }
.paint-soft { background: var(--accent-soft); color: var(--accent-dark); }
.paint-ring { background: var(--accent-ring); color: var(--text); }
.paint-ghost { background: var(--ghost-fill); color: var(--text); }
.paint-veil { background: var(--veil); color: var(--text); }
.paint-clear { background: var(--clear); color: var(--text); }
.paint-geometry { background: var(--grad-geo); color: var(--text); }
.paint-mark { background: var(--grad-mark); color: var(--on-accent); }
.preview-row { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.preview-type { display: grid; gap: 24px; }
.display-sample { font-family: var(--font-display); font-size: clamp(34px,3.4vw,48px); font-weight: var(--weight-display); line-height: 1.18; }
.preview-note { margin-top: 24px; color: var(--text-muted); font-size: 14px; }
.state-focus { outline: 3px solid var(--accent-ring); outline-offset: 3px; }
@media (max-width: 900px) {
  .feature-browser { grid-template-columns: minmax(0,1fr); gap: 32px; }
  .feature-list { order: 0; }
  .feature-board { order: 1; min-height: 360px; }
}
@media (max-width: 640px) {
  .swatch-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .feature-board { padding: 36px 20px; }
  .interface-card { padding: 20px; }
  .feature-tab-label { font-size: 18px; }
  .client-card, .term-card, .post-card { padding: 24px 20px; }
  .client-facts { grid-template-columns: minmax(0,1fr); }
  .dl-fab { right: 16px; bottom: max(16px,env(safe-area-inset-bottom)); padding: 12px 16px; }
  .callout { padding: 20px; }
  .article-download { padding: 24px 20px; }
  .display-sample { font-size: 30px; }
}
@media (prefers-reduced-motion: reduce) {
  .tabs.is-auto .feature-tab[aria-selected="true"] .feature-progress { animation: none; }
}