/* Selected inspiration + stacked survey/research layout; the pool owns room scrolling. */
.zt-case, .zt-case *, .zt-disclosure-popover, .zt-disclosure-popover * { box-sizing: border-box; }
.zt-case, .zt-disclosure-popover { --zt-surface: #fff; --zt-ink: #101216; --zt-muted: #7b838b; --zt-track: #eff0f2; --zt-coral: #ff758c; --zt-cyan: #36c9f2; --zt-gray: #b3bac0; --zt-font: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; }
.zt-case { container-type: inline-size; }
:root[data-theme="night"] :is(.zt-case, .zt-disclosure-popover) { --zt-surface: #24282e; --zt-ink: #f2f3f4; --zt-muted: #a8b0ba; --zt-track: #383d44; }
.room .zt-case { padding: 4px 0 40px 104px; }
.zt-overview { min-width: 0; }
.zt-hero { position: relative; width: 100%; overflow: hidden; border: 12px solid #dfded8; border-radius: 36px; background: #f3f2e9; }
.zt-hero-canvas { position: relative; display: block; width: 100%; aspect-ratio: 1436 / 796; overflow: hidden; }
.zt-hero-scene { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; user-select: none; }
.zt-cover-brand { position: absolute; inset: 0; pointer-events: none; color: #202b28; }
.zt-case .zt-site-link { color: inherit; text-decoration: none; cursor: pointer; border-radius: 4px; visibility: visible !important; }
.zt-case .zt-site-link:focus-visible { opacity: 1 !important; }
.zt-brand-link { position: absolute; z-index: 4; left: 8%; top: 26%; width: 33%; height: 53%; pointer-events: auto; }
.zt-platform-link { display: block; height: 100%; }
.zt-site-link:focus-visible { outline: 2px solid #0074dc; outline-offset: 4px; }
.zt-cover-logo { position: absolute; left: 11%; top: 29%; width: 17%; height: auto; overflow: visible; filter: drop-shadow(0 7px 5px #34372b32); }
.room .zt-cover-title { position: absolute; left: 8.9%; top: 45.1%; width: 22%; height: 18.2%; margin: 0; color: #202b28; font: italic 900 9cqw/1.1 var(--zt-font); letter-spacing: -.04em; }
.zt-cover-title canvas { display: none; width: 100%; height: auto; }
.zt-cover-title.has-art canvas { display: block; }
.zt-cover-title.has-art .zt-title-fallback { display: none; }
.zt-cover-title.has-art::after { content: ""; position: absolute; inset: 0; background: currentColor; mask: var(--zt-title-mask) left top / 100% auto no-repeat; opacity: 0; pointer-events: none; }
.zt-cover-rule { position: absolute; left: 9.8%; top: 66.2%; width: 1.9%; height: 1.5px; background: #344039; }
.room .zt-cover-tagline { position: absolute; left: 9.8%; top: 69.7%; max-width: none; margin: 0; color: #344039; font: 400 2.05cqw/1.5 var(--zt-font); white-space: nowrap; }
.zt-cover-phone { position: absolute; margin: 0; width: 19.5%; container-type: inline-size; transform: rotate(var(--zt-tilt)); filter: drop-shadow(0 5px 3px #222b2738); animation: zt-phone-float 7s ease-in-out infinite; animation-play-state: paused; pointer-events: none; }
.zt-cover-phone > img { display: block; width: 100%; height: auto; user-select: none; visibility: visible !important; transform: none !important; }
.zt-cover-launch { --zt-tilt: -6deg; left: 43%; top: 11.3%; aspect-ratio: 640 / 1324; }
.zt-launch-display { position: absolute; left: 5.023%; top: 2.064%; width: 89.726%; height: 95.91%; overflow: hidden; border-radius: 10.69% / 4.93%; background: #e6e6e6; }
.zt-launch-body { position: absolute; inset: 6.34% 0 1.9%; overflow: hidden; }
.zt-launch-body > img { position: absolute; left: 0; top: -6.667%; display: block; width: 104.065%; height: 110.333%; max-width: none; object-fit: fill; visibility: visible !important; transform: none !important; }
.zt-launch-status { position: absolute; inset: 0 0 auto; height: 6.34%; display: flex; align-items: center; justify-content: space-between; padding: 0 7.5%; color: #111; background: #e6e6e6; font: 600 3.8cqw/1 system-ui, sans-serif; }
.zt-launch-status img { display: block; width: 22%; height: auto; visibility: visible !important; transform: none !important; }
.zt-launch-home { position: absolute; left: 33%; bottom: 1.25%; width: 34%; height: .55%; border-radius: 999px; background: #111; }
.zt-cover-launch > .zt-launch-bezel { position: absolute; z-index: 2; left: -8.447%; top: -4.465%; width: 116.667%; height: 108.968%; max-width: none; pointer-events: none; }
.zt-cover-map { --zt-tilt: 4.5deg; left: 68%; top: 10.2%; width: 21.2%; animation-delay: -3.5s; }
.zt-map-caption { position: absolute; z-index: 1; display: block; color: #171a18; font: 800 4.8cqw/1.1 var(--zt-font); letter-spacing: -.06em; white-space: nowrap; -webkit-text-stroke: 1.7cqw #fff; paint-order: stroke fill; text-shadow: 0 .3cqw .2cqw #0002; }
.zt-caption-sunset { right: 8%; top: 15.3%; }
.zt-caption-walk { left: 15%; top: 21.5%; }
.zt-caption-happy { left: 20%; top: 36.1%; }
.zt-caption-wind { right: 7.5%; top: 45%; }
.zt-hero-toggle { position: absolute; z-index: 3; inset: 0; display: block; width: 100%; height: 100%; padding: 0; border: 0; margin: 0; background: transparent; cursor: pointer; visibility: visible !important; -webkit-tap-highlight-color: transparent; }
.zt-hero-toggle:focus-visible { outline: 3px solid #007aff; outline-offset: -5px; }
[data-playback="playing"] .zt-cover-phone { animation-play-state: running; }
@keyframes zt-phone-float { 0%, 100% { transform: translateY(0) rotate(var(--zt-tilt)); } 50% { transform: translateY(-.55cqw) rotate(var(--zt-tilt)); } }
:root[lang="en"] .room .zt-cover-title { top: 48%; width: 31%; height: auto; font-size: 6.1cqw; letter-spacing: -.065em; }
:root[lang="en"] .room .zt-cover-tagline { max-width: 29%; font-size: 1.55cqw; white-space: normal; }
.zt-origin { margin-top: 64px; }
.zt-origin { color: var(--zt-ink); font-family: var(--zt-font); }
.zt-meta { display: grid; grid-template-columns: 1.2fr 1fr 1fr; min-width: 0; margin-top: 40px; padding: 28px 0 32px; border: 1px solid color-mix(in srgb, var(--zt-track) 55%, transparent); border-radius: 24px; background: var(--zt-surface); color: var(--zt-ink); box-shadow: 0 12px 28px #24201c0c, 0 2px 6px #24201c03; font-family: var(--zt-font); }
.zt-meta-field { min-width: 0; padding: 0 28px; }
.zt-meta-field + .zt-meta-field { border-left: 1px solid var(--zt-track); }
.zt-meta-label { display: flex; align-items: center; gap: 11px; min-height: 44px; margin-bottom: 13px; color: var(--zt-muted); font: 500 14px/1.4 var(--zt-font); }
.zt-icon-well { display: grid; place-items: center; flex: none; width: 32px; height: 34px; border-radius: 10px; background: color-mix(in srgb, var(--zt-ink) 2.5%, var(--zt-surface)); box-shadow: inset 1px 2px 5px color-mix(in srgb, var(--zt-ink) 7%, transparent); }
.zt-meta-icon { display: block; width: 21px; height: 21px; visibility: visible !important; transform: none !important; }
.zt-role-trigger.zt-disclosure { display: inline-flex; align-items: center; gap: 4px; margin-left: 5px; padding: 5px 0 5px 5px; color: var(--zt-muted); font: 400 13px/1.4 var(--zt-font); white-space: nowrap; text-decoration: none; }
.zt-role-trigger .zt-meta-icon { width: 14px; height: 14px; filter: grayscale(1); opacity: .7; }
.zt-role-trigger:hover, .zt-role-trigger[aria-expanded="true"] { color: var(--zt-coral); }
.room .zt-meta-value { max-width: none; margin: 0; color: var(--zt-ink); font: 500 clamp(18px, 2.55cqw, 27px)/1.45 var(--zt-font); letter-spacing: -.025em; }
.zt-timeline { display: flex; flex-wrap: wrap; column-gap: .3em; }
.zt-timeline > * { white-space: nowrap; }
.room .zt-meta-note { max-width: none; margin: 9px 0 0; color: var(--zt-muted); font: 400 clamp(13px, 1.5cqw, 15px)/1.6 var(--zt-font); }
.room .zt-status { display: flex; align-items: center; gap: 12px; padding-left: 5px; }
.zt-status > span { flex: none; width: 7px; height: 7px; border-radius: 50%; background: #12bd87; box-shadow: 0 0 0 4px #12bd8720; }
.room .zt-cover-title, .room .zt-cover-tagline, .zt-cover-rule, .zt-cover-title canvas, .zt-cover-title.has-art::after, .zt-platform-link :is(.zt-meta-label, .zt-meta-value, .zt-meta-note) { transition: color .16s ease, background-color .16s ease, opacity .16s ease; }
.room .zt-cover-brand:has(.zt-brand-link:is(:hover, :focus-visible)) :is(.zt-cover-title, .zt-cover-tagline) { color: #0074dc; }
.zt-cover-brand:has(.zt-brand-link:is(:hover, :focus-visible)) .zt-cover-rule { background: #0074dc; }
.zt-cover-brand:has(.zt-brand-link:is(:hover, :focus-visible)) .zt-cover-title.has-art::after { opacity: 1; }
.zt-cover-brand:has(.zt-brand-link:is(:hover, :focus-visible)) .zt-cover-title.has-art canvas { opacity: 0; }
.room .zt-platform-link:is(:hover, :focus-visible) :is(.zt-meta-label, .zt-meta-value, .zt-meta-note) { color: #0074dc; }
:root[data-theme="night"] .room .zt-platform-link:is(:hover, :focus-visible) :is(.zt-meta-label, .zt-meta-value, .zt-meta-note) { color: #65b5ff; }
@media (prefers-reduced-motion: reduce) { .room .zt-cover-title, .room .zt-cover-tagline, .zt-cover-rule, .zt-cover-title canvas, .zt-cover-title.has-art::after, .zt-platform-link :is(.zt-meta-label, .zt-meta-value, .zt-meta-note) { transition: none; } }
.zt-story { min-width: 0; margin-top: 64px; color: var(--zt-ink); font-family: var(--zt-font); }
.room .zt-story-heading { margin: 0 0 18px; color: var(--ink-muted); font: 400 15px/1.5 var(--zt-font); letter-spacing: 0; }
.zt-story-stage { width: 100%; overflow: hidden; border: 12px solid #dfded8; border-radius: 36px; background: #f3f2e9; }
.zt-story-video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: contain; background: #f3f2e9; visibility: visible !important; transform: none !important; }
.zt-story-video:focus-visible { outline: 3px solid #007aff; outline-offset: -4px; }
.zt-story-video:fullscreen { width: 100%; height: 100%; border-radius: 0; background: #000; }
.room .zt-story-error { max-width: none; margin: 16px 0 0; color: var(--ink-muted); font: 400 15px/1.6 var(--zt-font); }
.zt-story-error[hidden] { display: none; }
.zt-origin-header { margin-bottom: 32px; }
.room .zt-eyebrow { max-width: none; margin: 0 0 14px; color: var(--ink-muted); font: 400 15px/1.5 var(--zt-font); }
.room .zt-origin-header h2 { margin: 0; color: var(--bg); font: 600 clamp(28px, 3.55cqw, 42px)/1.4 var(--zt-font); letter-spacing: -.025em; text-wrap: pretty; }
.zt-origin-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: auto auto; gap: 20px; }
.zt-origin-card { min-width: 0; padding: 28px; background: var(--zt-surface); border-radius: 26px; }
.zt-inspiration-card { display: flex; flex-direction: column; gap: 32px; grid-row: 1 / 3; }
.zt-origin-visual { width: 100%; min-width: 0; aspect-ratio: 580 / 324; margin: 0; }
.zt-origin-illustration { display: block; width: 100%; height: 100%; object-fit: cover; border-radius: 12px; }
.room .zt-origin-card h3 { margin: 0; color: var(--zt-ink); font: 600 clamp(24px, 2.5cqw, 30px)/1.35 var(--zt-font); letter-spacing: 0; }
.room .zt-origin-copy h3 { margin-bottom: 12px; }
.room .zt-origin-copy p { max-width: none; margin: 0; color: var(--zt-ink); font: 400 clamp(16px, 1.8cqw, 20px)/1.65 var(--zt-font); overflow-wrap: break-word; }
.zt-survey-card { display: flex; flex-direction: column; gap: 22px; }
.zt-survey { display: flex; flex-direction: column; gap: 24px; margin: 0; min-width: 0; }
.zt-survey figcaption { color: var(--zt-ink); font: 600 clamp(16px, 1.7cqw, 20px)/1.5 var(--zt-font); letter-spacing: -.02em; }
.zt-survey-bars { display: grid; gap: 17px; padding: 0; margin: 0; list-style: none; }
.zt-response { display: grid; grid-template-columns: 6.2em minmax(0, 1fr) 2.8em; gap: 10px; align-items: center; min-width: 0; font: 500 clamp(15px, 1.55cqw, 18px)/1.5 var(--zt-font); }
.zt-response-label { color: var(--zt-ink); }
.zt-coral { --zt-tone: var(--zt-coral); }
.zt-cyan { --zt-tone: var(--zt-cyan); }
.zt-gray { --zt-tone: var(--zt-gray); }
.zt-response-track { height: 14px; border-radius: 20px; background: var(--zt-track); overflow: hidden; }
.zt-response-track > span { display: block; height: 100%; background: var(--zt-tone); border-radius: inherit; }
.zt-response-percent { color: var(--zt-tone); text-align: right; font-variant-numeric: tabular-nums; font-size: 1.15em; }
.zt-research-card { display: flex; flex-direction: column; gap: 28px; min-height: 200px; }
.zt-research-categories { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: stretch; margin: 0; padding: 0; list-style: none; }
.zt-research-categories li { display: flex; align-items: center; justify-content: center; gap: 10px; min-width: 0; min-height: 58px; padding: 0 10px; }
.zt-research-categories li:first-child { padding-left: 0; }
.zt-research-categories li:last-child { padding-right: 0; }
.zt-research-categories li + li { border-left: 1px solid var(--zt-track); }
.zt-research-icon { display: block; flex: none; width: 30px; height: 30px; background: var(--zt-tone); mask: var(--zt-icon) center / contain no-repeat; }
.zt-research-pin { --zt-tone: var(--zt-coral); --zt-icon: url("assets/youze/demos/projects/zhitiao/research-icons/map-pin.svg"); }
.zt-research-route { --zt-tone: var(--zt-cyan); --zt-icon: url("assets/youze/demos/projects/zhitiao/research-icons/route.svg"); }
.zt-research-compass { --zt-tone: var(--zt-gray); --zt-icon: url("assets/youze/demos/projects/zhitiao/research-icons/compass.svg"); }
.zt-disclosure { appearance: none; display: inline-block; min-height: 44px; min-width: 44px; padding: 5px 0; border: 0; border-radius: 2px; margin: 0; background: transparent; color: inherit; font: inherit; line-height: inherit; text-align: inherit; text-decoration: underline dotted #c6ccd3; text-decoration-thickness: 1.5px; text-underline-offset: 8px; cursor: pointer; visibility: visible !important; -webkit-tap-highlight-color: transparent; }
.zt-research-categories .zt-disclosure { font: 600 clamp(15px, 1.6cqw, 18px)/1.5 var(--zt-font); }
.zt-disclosure:hover, .zt-disclosure[aria-expanded="true"] { color: var(--zt-coral); text-decoration-color: currentColor; }
.zt-disclosure:focus-visible { outline: 2px solid #007aff; outline-offset: 5px; }
.zt-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; border: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.zt-disclosure-popover { position: fixed; inset: auto; width: min(410px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); padding: 24px; border: 1px solid var(--zt-track); border-radius: 18px; margin: 0; overflow: auto; overscroll-behavior: contain; background: var(--zt-surface); color: var(--zt-ink); box-shadow: 0 8px 28px #11182714; font: 400 16px/1.65 var(--zt-font); text-align: left; }
.zt-disclosure-popover[hidden] { display: none !important; }
.zt-disclosure-popover:popover-open { animation: zt-disclose .15s ease-out; }
.zt-disclosure-popover h4 { margin: 0 0 18px; font: 600 22px/1.4 var(--zt-font); }
.zt-disclosure-popover p { max-width: none; margin: 0; font: inherit; }
.zt-disclosure-popover dl { display: grid; gap: 12px; margin: 0; }
.zt-disclosure-popover dl > div { display: grid; grid-template-columns: minmax(96px, .8fr) minmax(0, 1.2fr); gap: 16px; }
.zt-disclosure-popover dt { font-weight: 500; }
.zt-disclosure-popover dd { margin: 0; color: var(--zt-muted); overflow-wrap: anywhere; }
.zt-disclosure-popover .zt-disclosure-note { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--zt-track); font-size: 14px; }
@keyframes zt-disclose { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .zt-disclosure-popover:popover-open { animation: none; } }
:root[lang="en"] .zt-response { grid-template-columns: minmax(100px, 1.5fr) minmax(40px, 1fr) 2.8em; font-size: 14px; }
:root[lang="en"] .zt-research-categories li { flex-direction: column; gap: 8px; text-align: center; }
:root[lang="en"] .zt-research-categories .zt-disclosure { font-size: 15px; }
@container (max-width: 900px) {
  .zt-origin-card { padding: 24px; }
  .zt-inspiration-card { gap: 26px; }
  .zt-research-categories li { gap: 6px; padding-inline: 6px; }
  .zt-research-icon { width: 24px; height: 24px; }
  .zt-research-categories .zt-disclosure { font-size: 15px; }
  .zt-response { gap: 8px; }
}
@container (max-width: 760px) {
  .zt-meta { grid-template-columns: 1fr 1fr; padding: 22px 0 25px; }
  .zt-meta-field { padding: 0 22px; }
  .zt-role-field { grid-column: 1 / -1; margin-bottom: 22px; padding-bottom: 22px; border-bottom: 1px solid var(--zt-track); }
  .zt-role-field + .zt-meta-field { border-left: 0; }
  .zt-meta-label { gap: 8px; margin-bottom: 11px; font-size: 13px; }
  .room .zt-meta-value { font-size: 21px; }
  .room .zt-meta-note { font-size: 14px; }
  .zt-origin-header { margin-bottom: 24px; }
  .room .zt-origin-header h2 { font-size: clamp(26px, 6.5cqw, 34px); line-height: 1.45; letter-spacing: -.02em; }
  .room .zt-eyebrow { font-size: 14px; margin-bottom: 12px; }
  .zt-origin-grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .zt-inspiration-card { grid-row: auto; }
  .zt-origin-card { border-radius: 22px; }
  .room .zt-origin-card h3 { font-size: 24px; }
  .room .zt-origin-copy h3 { margin-bottom: 10px; }
  .room .zt-origin-copy p { font-size: 16px; line-height: 1.75; }
  .zt-survey-card { gap: 22px; }
  .zt-survey { gap: 24px; }
  .zt-survey figcaption { font-size: 18px; }
  .zt-response { font-size: 15px; }
  .zt-response-track { height: 12px; }
  .zt-research-card { min-height: 0; gap: 22px; }
  .zt-research-categories li { flex-direction: column; gap: 8px; text-align: center; }
  .zt-research-icon { width: 28px; height: 28px; }
}
@media (max-width: 859px) {
  .room .zt-case { padding-left: 0; }
  .zt-hero { border-width: 7px; border-radius: 26px; }
  .zt-hero-canvas { aspect-ratio: 4 / 5; }
  .zt-hero-scene { object-position: 47% center; }
  .zt-cover-logo { left: 9%; top: 8%; width: 20%; }
  .zt-brand-link { left: 7%; top: 3%; width: 88%; height: 28%; }
  .room .zt-cover-title { left: 33%; top: 4.5%; width: 34%; height: 17%; }
  .zt-cover-rule { left: 9%; top: 20.5%; width: 5%; }
  .room .zt-cover-tagline { left: 9%; top: 23%; font-size: 4cqw; }
  .zt-cover-launch { left: 8%; top: 36%; width: 36%; }
  .zt-cover-map { left: 55.5%; top: 35.5%; width: 36%; }
  .zt-origin { margin-top: 40px; }
  .zt-meta { margin-top: 28px; border-radius: 22px; }
  .zt-meta-field { padding-inline: 18px; }
  .room .zt-timeline, .zt-meta-field:last-child .zt-meta-value { font-size: 18px; }
  .zt-story { margin-top: 40px; }
  .room .zt-story-heading { margin-bottom: 14px; font-size: 14px; }
  .zt-story-stage { border-width: 7px; border-radius: 26px; }
  :root[lang="en"] .room .zt-cover-title { left: 33%; top: 8%; width: 60%; font-size: 9cqw; }
  :root[lang="en"] .room .zt-cover-tagline { max-width: none; font-size: 3.75cqw; white-space: nowrap; }
}