/* 首页首屏：Banner + 产品跑马灯，随 html.dark 切换浅色/深色 */

:root {
  --home-marquee-height: 178px;
  --home-locale-height: 0px;
  --home-navbar-height: 0px;
  --home-banner-bg: #f1f5f9;
  --home-banner-overlay: transparent;
  --home-banner-title: #111928;
  --home-banner-summary: rgb(17 25 40 / 78%);
  --home-banner-btn-primary-bg: #111928;
  --home-banner-btn-primary-color: #fff;
  --home-banner-btn-primary-hover: #1f2937;
  --home-banner-btn-ghost-bg: rgb(17 25 40 / 8%);
  --home-banner-btn-ghost-color: #111928;
  --home-banner-btn-ghost-hover-bg: #111928;
  --home-banner-btn-ghost-hover-color: #fff;
  --home-banner-control-border: rgb(17 25 40 / 22%);
  --home-banner-control-bg: rgb(255 255 255 / 72%);
  --home-banner-control-color: #111928;
  --home-banner-dot: rgb(17 25 40 / 28%);
  --home-banner-dot-active: #111928;
  --home-nav-overlay: linear-gradient(
    180deg,
    rgb(255 255 255 / 88%) 0%,
    rgb(255 255 255 / 52%) 72%,
    transparent 100%
  );
  --home-nav-link-color: #111928;
  --home-nav-icon-color: #111928;
}

html.dark {
  --home-banner-bg: #111928;
  --home-banner-overlay: transparent;
  --home-banner-title: #fff;
  --home-banner-summary: rgb(255 255 255 / 92%);
  --home-banner-btn-primary-bg: #fff;
  --home-banner-btn-primary-color: #111928;
  --home-banner-btn-primary-hover: #f3f4f6;
  --home-banner-btn-ghost-bg: rgb(255 255 255 / 14%);
  --home-banner-btn-ghost-color: #fff;
  --home-banner-btn-ghost-hover-bg: #fff;
  --home-banner-btn-ghost-hover-color: #111928;
  --home-banner-control-border: rgb(255 255 255 / 35%);
  --home-banner-control-bg: rgb(17 25 40 / 35%);
  --home-banner-control-color: #fff;
  --home-banner-dot: rgb(255 255 255 / 38%);
  --home-banner-dot-active: #fff;
  --home-nav-overlay: linear-gradient(
    180deg,
    rgb(17 25 40 / 78%) 0%,
    rgb(17 25 40 / 42%) 72%,
    transparent 100%
  );
  --home-nav-link-color: #fff;
  --home-nav-icon-color: #fff;
}

@media (width >= 1024px) {
  :root {
    --home-marquee-height: 212px;
  }
}

.home-first-screen {
  position: relative;
  z-index: 0;
  background-color: var(--home-banner-bg);
  transition: background-color 0.25s ease;
}

body:has(.home-first-screen) .ud-header {
  z-index: 999;
  opacity: 1;
}

/* 首屏导航遮罩随主题切换 */
body:has(.home-first-screen) .ud-header:not(.ud-header-scrolled) {
  background: var(--home-nav-overlay);
  backdrop-filter: blur(4px);
  transition: background 0.25s ease, color 0.25s ease;
}

@media (width >= 1024px) {
  html:not(.dark) body:has(.home-first-screen) .ud-header:not(.ud-header-scrolled) .home-nav-link {
    color: var(--home-nav-link-color);
  }

  html:not(.dark) body:has(.home-first-screen) .ud-header:not(.sticky) .home-nav-link:hover {
    color: var(--color-primary, #3056d3);
    opacity: 1;
  }

  html.dark body:has(.home-first-screen) .ud-header:not(.sticky) .home-nav-link {
    color: var(--home-nav-link-color);
  }

  html.dark body:has(.home-first-screen) .ud-header:not(.sticky) .home-nav-link:hover {
    opacity: 0.7;
  }
}

html:not(.dark) body:has(.home-first-screen) .ud-header:not(.sticky) .home-nav-icon,
html:not(.dark) body:has(.home-first-screen) .ud-header:not(.sticky) .locale-switcher-btn {
  color: var(--home-nav-icon-color);
  background-color: transparent;
}

html:not(.dark) body:has(.home-first-screen) .ud-header:not(.sticky) .home-nav-toggler {
  background-color: var(--home-nav-icon-color);
}

html.dark body:has(.home-first-screen) .ud-header:not(.sticky) .home-nav-icon,
html.dark body:has(.home-first-screen) .ud-header:not(.sticky) .locale-switcher-btn {
  color: var(--home-nav-icon-color);
  background-color: transparent;
}

html.dark body:has(.home-first-screen) .ud-header:not(.sticky) .home-nav-toggler {
  background-color: var(--home-nav-icon-color);
}

.home-first-screen:has(.locale-choose) {
  --home-locale-height: clamp(136px, 17vh, 172px);
}

.home-banner {
  position: relative;
  width: 100%;
  height: calc(100dvh - var(--home-locale-height));
  min-height: 240px;
  overflow: hidden;
  background-color: var(--home-banner-bg);
  transition: background-color 0.25s ease;
}

.home-first-screen:not(:has(.locale-choose)) .home-banner {
  height: 100dvh;
}

.home-banner__carousel {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

/* 横向轨道：JS 通过 translateX 控制左右滑动 */
.home-banner__track {
  display: flex;
  height: 100%;
  transition: transform 0.65s ease;
  will-change: transform;
}

.home-banner__slide {
  position: relative;
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  background-color: var(--home-banner-bg);
}

.home-banner__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.home-banner__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5.5rem 1rem 4.5rem;
  background: var(--home-banner-overlay);
  transition: background 0.25s ease;
}

.home-banner__content {
  flex: 0 1 auto;
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
  transition: opacity 0.35s ease;
}

.home-banner__content.is-fading {
  opacity: 0.35;
}

.home-banner__controls {
  position: absolute;
  bottom: 1.25rem;
  left: 50%;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: min(100% - 2rem, 420px);
  transform: translateX(-50%);
}

.home-banner__arrow {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--home-banner-control-border);
  border-radius: 9999px;
  background: var(--home-banner-control-bg);
  color: var(--home-banner-control-color);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.home-banner__arrow:hover {
  filter: brightness(0.95);
}

html.dark .home-banner__arrow:hover {
  filter: brightness(1.15);
}

.home-banner__dots {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.home-banner__dot {
  width: 0.55rem;
  height: 0.55rem;
  padding: 0;
  border: none;
  border-radius: 9999px;
  background: var(--home-banner-dot);
  cursor: pointer;
  transition: width 0.25s ease, background-color 0.25s ease;
}

.home-banner__dot.is-active {
  width: 1.35rem;
  background: var(--home-banner-dot-active);
}

@media (prefers-reduced-motion: reduce) {
  .home-banner__track,
  .home-banner__content,
  .home-banner,
  .home-first-screen {
    transition: none;
  }
}

.home-banner__title {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--home-banner-title);
  text-shadow: none;
  transition: color 0.25s ease;
}

.home-banner__summary {
  margin: 0 auto 1.75rem;
  max-width: 640px;
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.55;
  color: var(--home-banner-summary);
  text-shadow: none;
  transition: color 0.25s ease;
}

html.dark .home-banner__title,
html.dark .home-banner__summary {
  text-shadow: none;
}

.home-banner__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.home-banner__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: 0.375rem;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.home-banner__btn--primary {
  background: var(--home-banner-btn-primary-bg);
  color: var(--home-banner-btn-primary-color);
}

.home-banner__btn--primary:hover {
  background: var(--home-banner-btn-primary-hover);
}

.home-banner__btn--ghost {
  background: var(--home-banner-btn-ghost-bg);
  color: var(--home-banner-btn-ghost-color);
}

.home-banner__btn--ghost:hover {
  background: var(--home-banner-btn-ghost-hover-bg);
  color: var(--home-banner-btn-ghost-hover-color);
}

.home-first-screen .product-marquee-bridge {
  padding-top: 1rem;
  padding-bottom: 1rem;
}

@media (width >= 1024px) {
  .home-first-screen .product-marquee-bridge {
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
  }
}