:root {
  --bg-top: #f9f3e8;
  --bg-bottom: #e7f4f2;
  --panel: rgba(255, 252, 247, 0.76);
  --panel-strong: rgba(255, 255, 255, 0.9);
  --ink: #17313a;
  --muted: #56727b;
  --accent: #147c83;
  --accent-soft: rgba(20, 124, 131, 0.12);
  --accent-strong: #0b5a62;
  --shadow: 0 28px 90px rgba(19, 49, 58, 0.16);
  --shadow-soft: 0 18px 40px rgba(19, 49, 58, 0.12);
  --ring: rgba(20, 124, 131, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 15%, rgba(240, 146, 68, 0.18), transparent 20rem),
    radial-gradient(circle at 88% 12%, rgba(20, 124, 131, 0.2), transparent 22rem),
    radial-gradient(circle at 50% 92%, rgba(20, 124, 131, 0.1), transparent 24rem),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  font-family: "Segoe UI Variable Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.32), transparent 72%);
}

.page-shell {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 34px 36px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 32px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero::after {
  content: "";
  position: absolute;
  right: -5rem;
  top: -4rem;
  width: 14rem;
  height: 14rem;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(20, 124, 131, 0.24), transparent 68%);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", serif;
  font-size: clamp(2.3rem, 5vw, 4.2rem);
  line-height: 1.05;
}

.subtitle {
  max-width: 42rem;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.16rem);
  line-height: 1.7;
}

.status-bar {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 22px;
  padding: 14px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-soft);
}

#activeName {
  font-size: 1rem;
}

#progressLabel {
  color: var(--muted);
  font-weight: 600;
}

.carousel-stage {
  position: relative;
  display: grid;
  grid-template-columns: 74px 1fr 74px;
  gap: 14px;
  align-items: center;
  margin-top: 28px;
  padding: 28px 0;
  min-height: 78vh;
}

.carousel-track {
  position: relative;
  min-height: 100%;
  border-radius: 36px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.18));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
  overflow: hidden;
  perspective: 2000px;
}

.carousel-track::before {
  content: "";
  position: absolute;
  inset: auto 12% 8% 12%;
  height: 18%;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(11, 90, 98, 0.2), transparent 70%);
  filter: blur(28px);
}

.manual-card {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  gap: 14px;
  width: min(31vw, 380px);
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  transform-style: preserve-3d;
  transition:
    transform 300ms ease,
    opacity 300ms ease,
    filter 300ms ease;
}

.manual-card:focus-visible,
.nav-button:focus-visible,
.name-chip:focus-visible,
.viewer-close:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 4px;
}

.card-frame {
  display: block;
  aspect-ratio: 9 / 16;
  border-radius: 28px;
  overflow: hidden;
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.manual-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-caption {
  justify-self: center;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-soft);
  font-size: 0.96rem;
  font-weight: 600;
}

.manual-card.is-active {
  z-index: 3;
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.06);
}

.manual-card.is-previous {
  z-index: 2;
  opacity: 0.72;
  filter: saturate(0.88);
  transform: translate(calc(-50% - 324px), -50%) rotateY(35deg) scale(0.82);
}

.manual-card.is-next {
  z-index: 2;
  opacity: 0.72;
  filter: saturate(0.88);
  transform: translate(calc(-50% + 324px), -50%) rotateY(-35deg) scale(0.82);
}

.manual-card.is-hidden {
  z-index: 1;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.55);
}

.nav-button {
  width: 62px;
  height: 62px;
  border: 0;
  border-radius: 999px;
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow-soft);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease;
}

.nav-button:hover,
.viewer-close:hover,
.name-chip:hover {
  transform: translateY(-2px);
}

.name-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 18px;
}

.name-chip {
  padding: 12px 18px;
  border: 1px solid rgba(20, 124, 131, 0.14);
  border-radius: 999px;
  color: var(--accent-strong);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow-soft);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform 180ms ease,
    color 180ms ease,
    background 180ms ease;
}

.name-chip.is-current {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.viewer-dialog {
  width: min(92vw, 1060px);
  max-width: none;
  padding: 0;
  border: 0;
  border-radius: 28px;
  overflow: hidden;
  background: rgba(10, 23, 30, 0.88);
  box-shadow: 0 30px 100px rgba(5, 12, 15, 0.48);
}

.viewer-dialog::backdrop {
  background: rgba(9, 15, 20, 0.62);
  backdrop-filter: blur(6px);
}

.viewer-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 999px;
  color: white;
  background: rgba(255, 255, 255, 0.18);
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
  z-index: 1;
}

.viewer-scroll {
  max-height: 88vh;
  overflow: auto;
  padding: 28px;
}

.viewer-scroll img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  background: white;
}

@media (max-width: 1080px) {
  .carousel-stage {
    grid-template-columns: 58px 1fr 58px;
    min-height: 70vh;
  }

  .manual-card {
    width: min(48vw, 350px);
  }

  .manual-card.is-previous {
    transform: translate(calc(-50% - 170px), -50%) scale(0.78);
  }

  .manual-card.is-next {
    transform: translate(calc(-50% + 170px), -50%) scale(0.78);
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 20px, 100%);
    padding: 16px 0 32px;
  }

  .hero {
    padding: 24px 20px;
    border-radius: 24px;
  }

  .carousel-stage {
    grid-template-columns: 48px 1fr 48px;
    gap: 8px;
    min-height: 62vh;
    padding: 18px 0;
  }

  .carousel-track {
    border-radius: 28px;
  }

  .manual-card {
    width: min(68vw, 320px);
    gap: 10px;
  }

  .manual-card.is-active {
    transform: translate(-50%, -50%) scale(1);
  }

  .manual-card.is-previous {
    opacity: 0.24;
    transform: translate(calc(-50% - 84px), -50%) scale(0.92);
  }

  .manual-card.is-next {
    opacity: 0.24;
    transform: translate(calc(-50% + 84px), -50%) scale(0.92);
  }

  .card-caption {
    font-size: 0.88rem;
  }

  .name-nav {
    gap: 10px;
  }

  .name-chip {
    padding: 10px 14px;
    font-size: 0.88rem;
  }

  .viewer-scroll {
    padding: 14px;
  }
}