:root {
  --bg: #fff8f1;
  --surface: rgba(255, 251, 246, 0.9);
  --line: rgba(231, 188, 141, 0.34);
  --text: #643f2f;
  --muted: #a17f6c;
  --accent-deep: #cf7f42;
  --icon-color: #30353a;
  --shadow: 0 22px 70px rgba(211, 146, 89, 0.14);
  --radius-xl: 34px;
  --radius-lg: 24px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 0% 0%, rgba(247, 215, 190, 0.82), transparent 26%),
    radial-gradient(circle at 100% 10%, rgba(207, 230, 242, 0.7), transparent 24%),
    linear-gradient(180deg, #fffdf9 0%, #fff6ed 48%, #fff3e7 100%);
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(225, 168, 116, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(225, 168, 116, 0.05) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 96%);
}

.page-shell {
  position: relative;
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 20px 24px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(255, 251, 245, 0.92), rgba(255, 247, 238, 0.78));
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.brand-lockup {
  display: flex;
  gap: 18px;
  align-items: center;
}

.brand-mark {
  width: 82px;
  height: 82px;
  padding: 6px;
  flex: 0 0 auto;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 250, 245, 0.95), rgba(255, 239, 224, 0.8));
  border: 1px solid rgba(231, 188, 141, 0.38);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.52);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 20px;
}

.brand-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow--accent {
  color: var(--accent-deep);
}

.brand-copy h1,
.showcase-copy h2,
.meta-card strong,
.download-head h2,
.download-card h3 {
  margin: 0;
}

.brand-copy h1 {
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.02;
}

.brand-copy p:last-child {
  margin: 10px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.top-actions {
  display: flex;
  align-items: center;
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid rgba(222, 180, 132, 0.32);
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 248, 241, 0.75);
}

.download-panel {
  margin-top: 18px;
  padding: 22px 24px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.94), rgba(255, 246, 237, 0.86));
  box-shadow: var(--shadow);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 14px;
}

.download-card {
  position: relative;
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid rgba(227, 186, 145, 0.26);
  background: rgba(255, 252, 248, 0.82);
}

.download-trigger,
.download-static {
  width: 100%;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.download-trigger {
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
  color: inherit;
  cursor: pointer;
}

.download-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  color: var(--icon-color);
}

.download-icon svg,
.download-icon img {
  width: 46px;
  height: 46px;
}

.download-icon img {
  object-fit: contain;
}

.download-copy p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.download-copy span {
  display: inline-flex;
  margin-top: 14px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(247, 215, 190, 0.46);
  color: var(--accent-deep);
  font-size: 12px;
}

.download-dropdown {
  display: grid;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(227, 186, 145, 0.22);
}

.download-item {
  color: var(--text);
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255, 247, 239, 0.9);
  border: 1px solid rgba(227, 186, 145, 0.22);
}

.download-item--disabled {
  color: #b6a89a;
  background: rgba(242, 236, 231, 0.9);
  border-color: rgba(212, 201, 192, 0.7);
  cursor: not-allowed;
}

.showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  gap: 28px;
  align-items: center;
  margin-top: 22px;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 252, 247, 0.94), rgba(255, 246, 237, 0.86));
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow);
}

.showcase-media {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 2382 / 1551;
  max-height: 520px;
  border-radius: 30px;
  border: 1px solid var(--line);
  background: #fff7ef;
  box-shadow: 0 20px 42px rgba(116, 77, 48, 0.1);
  overflow: hidden;
}

.carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 420ms ease;
}

.slide {
  flex: 0 0 100%;
  min-width: 100%;
  height: 100%;
}

.slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff7ef;
}

.nav-btn {
  position: absolute;
  top: 50%;
  z-index: 2;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 244, 234, 0.92);
  color: var(--accent-deep);
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(44, 24, 10, 0.12);
}

.nav-btn--prev {
  left: 22px;
}

.nav-btn--next {
  right: 22px;
}

.dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 14px;
}

.dot {
  width: 28px;
  height: 6px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(207, 143, 83, 0.22);
  cursor: pointer;
  transition: width 180ms ease, background-color 180ms ease;
}

.dot.is-active {
  width: 42px;
  background: linear-gradient(90deg, #f3b98a, #e69056);
}

.showcase-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8px 4px;
}

.showcase-copy h2 {
  font-size: clamp(34px, 4vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.lead {
  margin: 20px 0 0;
  font-size: 20px;
  line-height: 1.8;
  color: var(--muted);
}

.detail-text {
  margin: 18px 0 0;
  font-size: 18px;
  line-height: 1.9;
  color: var(--text);
}

.meta-grid {
  display: none;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 24px;
}

.meta-grid.is-visible {
  display: grid;
}

.meta-card {
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid rgba(227, 186, 145, 0.26);
  background: rgba(255, 252, 248, 0.76);
}

.meta-card span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.meta-card strong {
  display: block;
  margin-top: 10px;
  font-size: 20px;
  line-height: 1.4;
  word-break: break-word;
}

.footer {
  padding: 24px 4px 0;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid rgba(231, 188, 141, 0.4);
}

@media (max-width: 1100px) {
  .topbar,
  .showcase {
    display: grid;
    grid-template-columns: 1fr;
  }

  .top-actions {
    justify-content: start;
  }

  .download-grid {
    grid-template-columns: 1fr;
  }

  .media-frame {
    max-height: none;
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100% - 18px, 1200px);
    padding-top: 14px;
  }

  .topbar,
  .download-panel,
  .showcase {
    padding: 20px;
  }

  .brand-lockup {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .ghost-link {
    width: 100%;
  }

  .nav-btn {
    width: 40px;
    height: 40px;
  }

  .download-trigger,
  .download-static {
    grid-template-columns: 46px minmax(0, 1fr);
  }

  .download-icon {
    width: 46px;
    height: 46px;
  }

  .download-icon svg {
    width: 38px;
    height: 38px;
  }
}