/* Detroit 首页扩展：导航 · 视频 hover · 单屏布局 */

/* Theme accent variables */
#page-content {
  --home-accent: #f59e0b;
  --home-accent-rgb: 245, 158, 11;
  --home-ink: #0a0a0a;
  --home-muted: #6b6b6b;
  --home-line: rgba(0, 0, 0, .12);
  transition: background .3s;
}
#page-content[data-theme=green] {
  --home-accent: #22c55e;
  --home-accent-rgb: 34, 197, 94;
}

.home-shell {
  position: relative;
  --detroit-font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --detroit-ink: #0b0b0b;
  font-family: var(--detroit-font);
}

body.home-body #site-body-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  margin-top: 0;
  padding-top: clamp(3.75rem, 9vh, 4.75rem);
  overflow: hidden;
}

/* ===== Hero 布局 & 字体 & 入场 ===== */
.home-hero {
  position: relative;
  z-index: 90;
  padding: 0;
  border: none;
  max-width: min(100%, 36rem);
}

.home-hero-wrap {
  position: relative;
  z-index: 100;
  flex: 0 0 auto;
  width: 100%;
  max-width: none;
  min-height: clamp(7.5rem, 20vh, 12rem);
  padding: 0 0 clamp(1.25rem, 3vh, 2.5rem);
}

.home-hero__fat {
  margin: 0;
  font-family: var(--detroit-font);
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 800;
  line-height: .88;
  letter-spacing: -.03em;
}

.home-hero__title {
  margin: .75rem 0 0;
  font-family: var(--detroit-font);
  font-size: clamp(1rem, 1.85vw, 1.55rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.02em;
  max-width: 22rem;
}

.home-hero__title .hero-split-word {
  overflow: visible;
  padding-bottom: .1em;
}

.home-hero__title sub {
  position: relative;
  z-index: 1;
  margin-top: .75rem;
  padding-bottom: .15em;
  font-size: .55em;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #6b6b6b;
  line-height: 1.4;
}

@media (max-width: 767px) {
  .home-hero__fat {
    font-size: clamp(2.25rem, 12vw, 4rem);
  }
  .home-hero__title {
    font-size: .925rem;
  }
  .home-hero-wrap {
    min-height: clamp(5.5rem, 14vh, 8rem);
    padding-bottom: .75rem;
  }
}

.hero-split-line {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}

.hero-split-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(105%);
  transition: transform 1.15s cubic-bezier(.33, 1, .68, 1), opacity 1.15s cubic-bezier(.33, 1, .68, 1);
}

.hero-split-char.is-in {
  opacity: 1;
  transform: translateY(0);
}

.hero-split-word {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
  margin-right: .28em;
}

.hero-split-space {
  display: inline-block;
  width: .28em;
}

/* ===== 首页单屏：禁止滚动条 ===== */
html.home-page-root,
body.home-body {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  max-height: 100dvh;
  overflow: hidden !important;
  overscroll-behavior: none;
  scrollbar-width: none;
  -ms-overflow-style: none;
  background-color: #fff;
  color: #171717;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html.home-page-root::-webkit-scrollbar,
body.home-body::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

body.home-body {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.home-page {
  flex: 1;
  min-height: 0;
  overflow: visible;
  display: flex;
  flex-direction: column;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.home-page::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

.home-one-screen {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: visible;
  position: relative;
  padding: 0 clamp(1rem, 3vw, 1.75rem) 0;
  box-sizing: border-box;
}

body.home-body footer[role="contentinfo"] {
  flex-shrink: 0;
  padding: 0 clamp(1rem, 3vw, 1.75rem) max(.35rem, env(safe-area-inset-bottom, 0px));
}

body.home-body footer[role="contentinfo"] > div {
  max-width: none;
  padding-left: 0 !important;
  padding-right: 0 !important;
  padding-top: .5rem !important;
}

/* ===== 卡片视频 / Ken Burns ===== */
.home-tile-frame[data-video-hover]{position:absolute;inset:0}
.home-tile-video{
  position:absolute;inset:0;z-index:2;
  width:100%;height:100%;object-fit:cover;
  opacity:0;pointer-events:none;
  transition:opacity .25s ease
}
.home-tile-frame[data-video-on-hover="active"] .home-tile-video{opacity:1}
.home-tile-frame[data-video-on-hover="active"] .home-tile-media__img,
.home-tile-frame[data-video-on-hover="active"] .home-tile-media__bg{opacity:0}
.home-tile-media__img,.home-tile-media__bg{transition:opacity .25s ease,transform .8s cubic-bezier(.33,1,.68,1)}
.home-tile-frame[data-ken-burns="active"] .home-tile-media__img{
  transform:translate(calc(-50% + var(--parallax-x,0%)),-50%) scale(1.08)
}