:root {
  --page-width: 750px;
  --gold: #f6d17b;
  --gold-dark: #ad7625;
  --brown: #4b230f;
  --bg-start: #30244c;
  --bg-end: #221737;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  overflow-x: hidden;
  background: var(--bg-end);
  color: #fff;
  font-family: "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

button {
  border: 0;
  padding: 0;
  font: inherit;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
  border: 0;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100vw;
  height: 100vh;
}

.page-shell {
  position: relative;
  width: min(100%, var(--page-width));
  min-height: 100vh;
  margin: 0 auto;
  padding-bottom: clamp(74px, 18vw, 150px);
}

.hero {
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: clamp(52px, 17vw, 130px);
  background: linear-gradient(180deg, rgba(48, 36, 76, 0), #2b1631 78%);
  pointer-events: none;
}

.hero-image {
  width: 100%;
}

.content {
  min-height: 860px;
  padding: clamp(28px, 8vw, 62px) clamp(12px, 3vw, 22px) clamp(52px, 12vw, 92px);
  background:
    radial-gradient(circle at 50% 0, rgba(246, 209, 123, 0.22), rgba(246, 209, 123, 0) 28%),
    linear-gradient(180deg, #2b1631 0%, #160d24 100%);
}

.download-area {
  display: flex;
  justify-content: center;
  margin-bottom: clamp(28px, 7vw, 56px);
}

.download-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: min(320px, 46vw);
  min-width: 176px;
  aspect-ratio: 3.65 / 1;
  border-radius: 999px;
  background:
    linear-gradient(180deg, #fff1b8 0%, var(--gold) 42%, #d79c3b 100%);
  box-shadow:
    inset 0 3px 0 rgba(255, 255, 255, 0.54),
    inset 0 -4px 0 rgba(93, 44, 13, 0.3),
    0 12px 24px rgba(0, 0, 0, 0.24);
  color: var(--brown);
  animation: pulse 1.1s ease-in-out infinite;
}

.download-button::before {
  content: "立即下载";
  font-size: clamp(22px, 5.8vw, 36px);
  font-weight: 700;
  letter-spacing: 0;
}

.section-image {
  width: 100%;
  margin: 0 auto clamp(26px, 7vw, 56px);
}

.feature-image {
  width: min(100%, 579px);
}

.service-badge {
  position: fixed;
  top: 58%;
  right: max(8px, calc((100vw - var(--page-width)) / 2 + 8px));
  z-index: 10;
  width: clamp(62px, 16vw, 124px);
  transform: translateY(-50%);
}

.bottom-banner {
  position: fixed;
  right: max(0px, calc((100vw - var(--page-width)) / 2));
  bottom: 0;
  left: max(0px, calc((100vw - var(--page-width)) / 2));
  z-index: 9;
  pointer-events: none;
}

.bottom-banner img {
  width: 100%;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(0.94);
  }
}

@media (prefers-reduced-motion: reduce) {
  .download-button {
    animation: none;
  }
}