/* Homepage framing for the public business scenario experience. */
.engine-section { background: #f0f6fc; scroll-margin-top: 92px; overflow: clip; }
.engine-intro { display: grid; grid-template-columns: 1.05fr 1fr; align-items: end; gap: 64px; margin-bottom: 36px; }
.engine-intro .section-title { margin-bottom: 0; }
.engine-intro .engine-title-long { font-size:clamp(28px,3.1vw,42px); line-height:1.28; }
.engine-sample-label-long { font-weight:500; line-height:1.7; }
.engine-sample-label-long strong { font-weight:700; }
.engine-intro-copy p { color: var(--ink-soft); font-size: 16px; line-height: 1.9; margin: 0 0 18px; }
.engine-text-link { color: var(--ice-blue-ink); font-size: 14px; font-weight: 700; text-decoration: none; }
.engine-text-link span { display: inline-block; margin-left: 8px; transition: transform .18s; }
.engine-text-link:hover span { transform: translate(2px,-2px); }
.engine-experience { background: #fff; border: 1px solid #d4e2ef; border-radius: 20px; box-shadow: 0 24px 60px -32px #16395840; overflow: hidden; }
.engine-experience-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 17px 24px; border-bottom: 1px solid #e3ecf4; }
.engine-sample-label { font-size: 13px; font-weight: 700; color: var(--navy); }
.engine-sample-note { color: #51697f; font-size: 12px; white-space: nowrap; }
.engine-tabs { display: flex; gap: 4px; padding: 0 22px; border-bottom: 1px solid #e3ecf4; overflow-x: auto; scrollbar-width: thin; }
.engine-tabs button { flex: 1; position: relative; min-height: 64px; min-width: 120px; border: none; background: transparent; color: #526b82; font: inherit; font-size: 14px; font-weight: 700; white-space: nowrap; cursor: pointer; transition: background .18s,color .18s; }
.engine-tabs button span { color: #71899e; font-size: 11px; font-weight: 500; margin-right: 9px; }
.engine-tabs button::after { content: ''; position: absolute; height: 3px; border-radius: 3px 3px 0 0; inset: auto 20px 0; background: transparent; }
.engine-tabs button[aria-selected="true"] { color: #116aaa; background: #f5faff; }
.engine-tabs button[aria-selected="true"]::after { background: #2496db; }
.engine-tabs button:hover { background: #f5faff; color: #116aaa; }
.engine-section a:focus-visible,.engine-section button:focus-visible,.engine-section [tabindex]:focus-visible { outline: 3px solid #167cbc; outline-offset: -3px; }
.engine-caption { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px; }
.engine-caption h3 { margin: 0 0 6px; font-size: 20px; line-height: 1.5; font-weight: 800; letter-spacing: -.025em; }
.engine-caption p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.8; }
.engine-window-link { color: #2c5f83; font-size: 12px; font-weight: 700; text-decoration: none; white-space: nowrap; min-height: 44px; display: inline-flex; align-items: center; gap: 8px; }
.engine-stage { position: relative; background: #eef4fb; margin: 0 24px; border: 1px solid #dbe6ef; border-radius: 10px; overflow: hidden; }
.engine-poster { display: block; width: 100%; height: auto; }
.engine-live { width: 100%; height: clamp(560px,52vw,720px); }
.engine-live iframe { display: block; width: 100%; height: 100%; border: 0; background: #eef4fb; }
.engine-live.is-loading { position: absolute; inset: 0; opacity: 0; pointer-events: none; }
.engine-loader { position: absolute; left: 16px; right: 16px; bottom: 16px; padding: 14px 18px; background: #fff; border: 1px solid #d4e2ef; border-radius: 8px; color: #244d6c; font-size: 13px; box-shadow: 0 5px 20px #10284514; }
.engine-load-status:not(.engine-sr-only) { margin: 0 24px 22px; color: #375973; font-size: 13px; line-height: 1.8; }
.engine-section [hidden] { display: none !important; }
.engine-action-bar { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 24px; }
.engine-hint { font-size: 13px; color: #244d6c; margin: 0 0 5px; line-height: 1.7; }
.engine-demo-note { color: #647a8e; font-size: 12px; margin: 0; line-height: 1.8; }
.engine-start { flex-shrink: 0; font-size: 13px; gap: 16px; min-height: 46px; }
.engine-reset { border: none; background: #edf5fc; color: #256086; border-radius: 8px; padding: 12px 16px; font: inherit; font-size: 12px; white-space: nowrap; cursor: pointer; }
.engine-principles { display: grid; grid-template-columns: repeat(3,1fr); gap: 36px; margin-top: 32px; }
.engine-principles>div { padding-left: 16px; border-left: 2px solid #a8c9e4; }
.engine-principles span { font-weight: 800; font-size: 15px; }
.engine-principles p { font-size: 13px; color: var(--ink-soft); line-height: 1.8; margin: 8px 0 0; }
.engine-sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0; clip: rect(0,0,0,0); overflow: hidden; white-space: nowrap; }
.engine-noscript { margin: 12px 24px; font-size: 14px; }
@media(max-width:880px) {
  .engine-intro { grid-template-columns: 1fr; gap: 20px; }
  .engine-intro-copy p { font-size: 15px; }
  .engine-caption { align-items: start; flex-direction: column; gap: 4px; }
  .engine-caption h3 { font-size: 18px; }
  .engine-live { height: 660px; }
  .engine-desktop-break { display: none; }
}
@media(max-width:560px) {
  .engine-section { padding: 64px 0; }
  .engine-intro { margin-bottom: 25px; }
  .engine-experience { border-radius: 14px; }
  .engine-experience-head { align-items: start; flex-direction: column; gap: 6px; padding: 16px; }
  .engine-tabs { padding: 0 8px; }
  .engine-tabs button { min-height: 54px; min-width: 106px; font-size: 13px; }
  .engine-tabs button span { margin-right: 5px; }
  .engine-caption { padding: 18px 16px 12px; }
  .engine-stage { margin: 0 12px; border-radius: 7px; }
  .engine-live { height: 610px; overflow-x: auto; }
  .engine-live iframe { min-width: 850px; }
  .engine-action-bar { align-items: stretch; flex-direction: column; gap: 15px; padding: 16px; }
  .engine-start { justify-content: center; }
  .engine-principles { gap: 20px; grid-template-columns: 1fr; margin-top: 28px; }
  .engine-principles p br { display: none; }
}
@media(prefers-reduced-motion:reduce) {
  .engine-section *, .engine-section *::after { transition: none !important; scroll-behavior: auto !important; }
}

.engine-section>.container { max-width:1320px; width:calc(100% - 64px); }
.engine-live { height:820px; }
.engine-intro { gap:48px; }
@media(max-width:880px) { .engine-live { height:760px; } .engine-section>.container { width:calc(100% - 40px); } }
@media(max-width:560px) { .engine-section>.container { width:calc(100% - 28px); } .engine-live { height:710px; } .engine-live iframe { min-width:860px; } }