:root {
  color-scheme: light;
}

@font-face {
  font-family: "Hi-GEOM-Bold";
  src: url("./Hi-GEOM-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 0;
}

body {
  margin: 0;
  background: #fff;
  color: #000;
  font-family: "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  overflow-x: hidden;
}

html:lang(zh-HK) body,
html:lang(zh-HK) button,
html:lang(zh-HK) input,
html:lang(zh-HK) textarea,
html:lang(zh-HK) #docMarkdown {
  font-family: "SF Pro Text", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
}

.app-shell {
  min-height: 100vh;
}

.page {
  max-width: 960px;
  min-height: 100vh;
  margin: 0 auto;
  background: #fff;
}


.hidden {
  display: none !important;
}

.top-bar {
  position: fixed;
  height: 76px;
  padding: 16px 24px;
  width: 100%;
  max-width: calc(960px);
  margin: 0 auto;
  display: flex;
  background: #fff; 
  align-items: center;
  justify-content: space-between;
}

.icon-btn {
  border: 0;
  background: transparent;
  width: 44px;
  height: 44px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.svg-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.logo-svg {
  width: 32px;
  height: 33px;
}

.menu-svg {
  width: 24px;
  height: 20px;
}

.hero {
  min-height: 100vh;
  padding: 100px 28px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-sizing: border-box;
}

.app-icon-wrap {
  width: 128px;
  height: 128px;
  border: 1.5px solid rgba(0, 0, 0, 0.06);
  border-radius: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-icon {
  width: 128px;
  height: 128px;
}

.app-main-svg {
  width: 128px;
  height: 128px;
  display: block;
}

.brand-name {
  font-family: "Hi-GEOM-Bold", "PingFang SC", sans-serif;
  font-size: clamp(42px, 5vw, 56px);
  line-height: 1;
  letter-spacing: -0.01em;
  margin: 32px 0 12px;
  font-weight: 700;
}

.hero-title {
  font-size: clamp(28px, 3.5vw, 38px);
  line-height: 1.2;
  margin: 0;
  font-weight: 600;
}

.hero-desc {
  margin: 16px 0 0;
  max-width: 840px;
  font-size: clamp(16px, 1.8vw, 20px);
  line-height: 1.45;
  color: rgba(0, 0, 0, 0.44);
}

.download-btn {
  margin-top: 32px;
  width: clamp(220px, 25vw, 260px);
  height: 64px;
  border: 0;
  border-radius: 80px;
  background: #222;
  color: #d1f5f7;
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: 700;
  cursor: pointer;
}

.doc-content {
  padding: 100px 28px 60px;
}

#docMarkdown {
  color: #000;
}

#docMarkdown h1 {
  font-size: 36px;
  margin: 0 0 16px;
}

#docMarkdown h2 {
  font-size: 24px;
  margin: 24px 0 12px;
}

#docMarkdown p,
#docMarkdown li {
  font-size: 16px;
  line-height: 1.45;
}

#docMarkdown ul {
  padding-left: 24px;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 400ms cubic-bezier(0.22, 1, 0.36, 1);
}

.overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sheet {
  width: 100%;
  background: #fff;
  max-height: 0;
  overflow: hidden;
  transition: max-height 480ms cubic-bezier(0.22, 1, 0.36, 1);
}

.overlay.is-open .sheet {
  max-height: 800px;
  transform: translateY(0);
}

.sheet-inner {
  padding: 60px 24px 16px;
  width: 100%;
  max-width: calc(960px);
  margin: 0 auto;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  position: relative;
}

.menu-list {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.menu-item {
  border: 0;
  background: transparent;
  padding: 16px;
  text-align: left;
  font-size: 22px;
  color: #000;
  cursor: pointer;
  opacity: 0;
  transform: translateY(-8px);
  transition:
    opacity 240ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.menu-item.active {
  font-weight: 700;
}

.language-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-pill {
  height: 28px;
  padding: 4px 8px;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.04);
  color: rgba(0, 0, 0, 0.44);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
}

.close-svg {
  width: 22px;
  height: 22px;
}

.close-btn {
  position: fixed;
  top: 16px;
  right: calc(50% - 480px + 24px);
  z-index: 11;
  opacity: 0;
  transform: rotate(0deg);
  transition:
    opacity 240ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

@media (max-width: 960px) {
  .close-btn {
    right: 24px;
  }
}

.overlay.is-open .close-btn {
  opacity: 1;
  transform: rotate(180deg);
}

.overlay.is-open .menu-item {
  opacity: 1;
  transform: translateY(0);
}




.overlay.is-open .menu-item:nth-child(2) {
  transition-delay: 40ms;
}

.overlay.is-open .menu-item:nth-child(3) {
  transition-delay: 75ms;
}

.overlay.is-open .menu-item:nth-child(4) {
  transition-delay: 110ms;
}

.overlay.is-open .menu-item:nth-child(5) {
  transition-delay: 145ms;
}

@media (max-width: 960px) {
  .hero {
    padding-bottom: 120px;
  }

  .hero-desc {
    text-align: center;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .top-bar {
    padding: 16px 24px;
  }

  .menu-item {
    font-size: 22px;
  }

  .lang-pill {
    font-size: 14px;
    height: 28px;
  }

  #docMarkdown h1 {
    font-size: 36px;
  }

  #docMarkdown h2 {
    font-size: 24px;
  }

  #docMarkdown p,
  #docMarkdown li {
    font-size: 16px;
    line-height: 1.45;
  }
}