/* 实际产品界面导览：静态正文完整可读，脚本只增强定位。 */
.about-page #workspace-tour { animation: none; margin: 64px 0; }
.tour-intro { max-width: 600px; color: var(--muted); }
.tour-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.tour-stage { position: sticky; top: 90px; margin: 0; min-width: 0; }
.tour-screen { width: 100%; }
.tour-image { display: block; width: 100%; height: auto; }
.tour-focus rect { fill: none; stroke: #0f6f5c; stroke-width: 2; vector-effect: non-scaling-stroke; display: none; }
.tour-screen[data-view="projects"] [data-region="projects"],
.tour-screen[data-view="sessions"] [data-region="sessions"],
.tour-screen[data-view="conversation"] [data-region="conversation"],
.tour-screen[data-view="tools"] [data-region="tools"] { display: block; }
.tour-controls { display: flex; flex-wrap: wrap; gap: 4px; margin: 12px 0 8px; }
.tour-controls button { appearance: none; font: inherit; font-size: 13px; line-height: 1.3; min-height: 44px; padding: 8px 9px; border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; color: var(--ink); cursor: pointer; }
.tour-controls button[aria-pressed="true"] { color: var(--accent); border-bottom-color: var(--accent); }
.tour-controls button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.tour-stage figcaption { font-size: 12px; color: var(--muted); }
.tour-step { min-height: 55vh; padding: 54px 0; border-top: 1px solid var(--line); scroll-margin-top: 130px; }
.tour-step:first-child { border-top: 0; }
.tour-step:last-child { min-height: max(55svh, calc(var(--tour-stage-height, 640px) + 70px)); }
.tour-step h3 { font-size: clamp(24px, 3vw, 34px); line-height: 1.15; margin: 0 0 18px; letter-spacing: -.025em; }
.tour-step p { color: var(--muted); max-width: 42ch; }
.tour-step .tour-location { color: var(--accent); font-size: 14px; }
@media (max-width: 700px) {
  .tour-layout { display: block; }
  .tour-stage { top: 100px; z-index: 2; background: var(--bg); padding: 8px 0; }
  .tour-screen { width: min(100%, 31svh); margin: auto; }
  .tour-controls { justify-content: center; gap: 4px; margin-top: 8px; }
  .tour-controls button { font-size: 12px; padding: 6px 5px; }
  .tour-stage figcaption { text-align: center; font-size: 11px; }
  .tour-step { min-height: 48svh; padding: 36px 0; scroll-margin-top: calc(31svh + 205px); }
}
@media (prefers-reduced-motion: reduce) { .tour-focus { transition: none; } }
@media (max-height: 600px) { .tour-stage { position: static; } .tour-step { scroll-margin-top: 112px; } }

.tour-controls, .tour-focus { display: none; }
.tour-ready .tour-controls { display: flex; }
.tour-ready .tour-focus { display: block; }
.tour-next { text-align: center; }