:root {
  --bg: #08090d;
  --text: #ffffff;
  --muted: rgba(255, 255, 255, 0.72);
  --gold: #ffd46a;
  --yellow: #ffd400;
  --pink: #ff2f86;
  --panel: rgba(255, 255, 255, 0.08);
  --line: rgba(255, 255, 255, 0.12);
  --vh: 1vh;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
}

html {
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

img {
  display: block;
  width: 100%;
}

.landing {
  width: 100%;
  min-height: 100vh;
  min-height: calc(var(--vh) * 100);
  overflow: hidden;
  background: #08090d;
}

.hero {
  position: relative;
  min-height: 82svh;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: calc(34px + env(safe-area-inset-top)) max(20px, 5vw) 42px;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero::before {
  background:
    radial-gradient(circle at 50% 35%, rgba(8, 9, 13, 0.18), rgba(8, 9, 13, 0.54) 48%, rgba(8, 9, 13, 0.86) 82%),
    linear-gradient(90deg, rgba(8, 9, 13, 0.72), rgba(8, 9, 13, 0.28) 50%, rgba(8, 9, 13, 0.68));
}

.hero::after {
  background: linear-gradient(180deg, transparent 0%, rgba(8, 9, 13, 0.28) 70%, #08090d 100%);
}

.poster-wall {
  position: absolute;
  inset: -13vh -8vw auto;
  height: 118vh;
  display: grid;
  grid-template-columns: repeat(8, minmax(120px, 1fr));
  gap: clamp(10px, 1.4vw, 18px);
  opacity: 0.86;
  filter: saturate(1.12) brightness(0.92);
  transform: rotate(-8deg) scale(1.08);
  transform-origin: center top;
}

.poster-wall img {
  height: 100%;
  min-height: 260px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.42);
}

.poster-wall img:nth-child(2n) {
  transform: translateY(54px);
}

.poster-wall img:nth-child(3n) {
  transform: translateY(-28px);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(34px, 6vw, 88px);
  align-items: center;
}

.brand-card {
  display: grid;
  justify-items: center;
  align-content: center;
  text-align: center;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.logo {
  width: clamp(100px, 10vw, 138px);
  height: clamp(100px, 10vw, 138px);
  border-radius: 26px;
  object-fit: contain;
  filter: drop-shadow(0 18px 34px rgba(0, 0, 0, 0.42));
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  margin-top: 24px;
  font-family: "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
  color: #ffffff;
  text-shadow: 0 8px 18px rgba(0, 0, 0, 0.52);
}

.brand-card p {
  max-width: 440px;
  margin-top: 20px;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.7;
}

.download-button {
  min-width: 178px;
  margin-top: 38px;
  padding: 15px 32px;
  border-radius: 999px;
  color: #ffffff;
  background: linear-gradient(135deg, #2f7dff, var(--pink));
  font-size: 1.06rem;
  font-weight: 900;
  text-align: center;
  box-shadow: 0 14px 30px rgba(47, 125, 255, 0.32);
}

.showcase {
  position: relative;
  min-height: clamp(260px, 30vw, 380px);
}

.showcase-orbit {
  position: relative;
  width: min(620px, 100%);
  height: clamp(260px, 30vw, 380px);
  margin-inline: auto;
  perspective: 900px;
}

.showcase-orbit img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(110px, 11vw, 152px);
  aspect-ratio: 188 / 251;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  transform: translate(-50%, -50%);
  animation: orbit-card 15s linear infinite;
}

.showcase-orbit img:nth-child(2) {
  animation-delay: -2.5s;
}

.showcase-orbit img:nth-child(3) {
  animation-delay: -5s;
}

.showcase-orbit img:nth-child(4) {
  animation-delay: -7.5s;
}

.showcase-orbit img:nth-child(5) {
  animation-delay: -10s;
}

.showcase-orbit img:nth-child(6) {
  animation-delay: -12.5s;
}

.content {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 16px 0 calc(42px + env(safe-area-inset-bottom));
  transform: translateY(-4px);
}

.preview h2 {
  font-size: clamp(1.28rem, 3vw, 2rem);
  text-align: center;
}

.poster-carousel {
  display: none;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.features div {
  min-height: 96px;
  padding: 18px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  text-align: center;
  backdrop-filter: blur(16px);
}

.features strong,
.features span {
  display: block;
}

.features strong {
  font-size: 1.02rem;
}

.features span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

@media (max-width: 920px) {
  .hero {
    min-height: auto;
    padding: calc(24px + env(safe-area-inset-top)) 18px 18px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    width: min(430px, 100%);
    gap: 0;
    justify-items: center;
    text-align: center;
  }

  .brand-card {
    justify-items: center;
    align-content: center;
  }

  .brand-card p {
    max-width: 330px;
    font-size: clamp(14px, 3.7vw, 16px);
    overflow-wrap: anywhere;
  }

  .showcase {
    display: none;
  }

  .poster-wall {
    grid-template-columns: repeat(4, minmax(120px, 1fr));
    height: calc(var(--vh) * 72);
    inset: calc(var(--vh) * -8) -34vw auto;
    opacity: 0.72;
    filter: none;
    transform: rotate(-8deg) scale(1.02);
  }

  .poster-wall img {
    box-shadow: none;
  }

  .logo {
    width: clamp(96px, 22vw, 112px);
    height: clamp(96px, 22vw, 112px);
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.36));
  }

  h1 {
    font-size: 18px;
  }

  .brand-card p {
    max-width: 330px;
    font-size: 1rem;
  }

  .download-button {
    width: min(72vw, 220px);
    margin-top: 34px;
    box-shadow: 0 10px 22px rgba(47, 125, 255, 0.24);
  }

  .content {
    width: 100%;
    padding: 6px 18px calc(28px + env(safe-area-inset-bottom));
    transform: none;
  }

  .poster-carousel {
    display: block;
    margin-top: 16px;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    scroll-behavior: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    cursor: grab;
    touch-action: pan-x pan-y;
    contain: paint;
  }

  .poster-carousel.is-dragging {
    cursor: grabbing;
    scroll-behavior: auto;
  }

  .poster-carousel::-webkit-scrollbar {
    display: none;
  }

  .poster-track {
    display: flex;
    gap: 10px;
    width: max-content;
    padding: 0 1px 4px;
    transform: translate3d(0, 0, 0);
    contain: paint;
  }

  .poster-track img {
    width: clamp(142px, 43vw, 188px);
    aspect-ratio: 3 / 4;
    flex: 0 0 auto;
    border-radius: 8px;
    object-fit: cover;
    user-select: none;
    -webkit-user-drag: none;
  }

  .features {
    width: min(560px, calc(100% - 36px));
    gap: 9px;
    margin-top: 20px;
  }

  .features div {
    min-height: 82px;
    padding: 12px 8px;
    backdrop-filter: none;
  }

  .features strong {
    font-size: 0.95rem;
  }

  .features span {
    font-size: 0.78rem;
  }
}

@media (max-width: 640px) {
  .poster-wall {
    grid-template-columns: repeat(4, 34vw);
    gap: 10px;
  }

  .poster-track img {
    width: clamp(142px, 43vw, 188px);
  }
}

@media (max-height: 560px) and (max-width: 1100px) {
  .hero {
    min-height: auto;
    padding: calc(18px + env(safe-area-inset-top)) 18px 14px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    width: min(420px, 100%);
    gap: 0;
    justify-items: center;
    text-align: center;
  }

  .showcase {
    display: none;
  }

  .logo {
    width: 86px;
    height: 86px;
  }

  .brand-card p {
    max-width: 340px;
    margin-top: 12px;
    font-size: 14px;
  }

  .download-button {
    width: min(220px, 68vw);
    margin-top: 20px;
    padding: 13px 28px;
  }

  .content {
    width: 100%;
    padding: 6px 18px calc(18px + env(safe-area-inset-bottom));
    transform: none;
  }

  .poster-carousel {
    display: block;
    margin-top: 14px;
    overflow-x: auto;
    overflow-y: hidden;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    cursor: grab;
    touch-action: pan-x pan-y;
    contain: paint;
  }

  .poster-track {
    display: flex;
    gap: 10px;
    width: max-content;
    padding: 0 1px 4px;
    contain: paint;
  }

  .poster-track img {
    width: 136px;
    aspect-ratio: 3 / 4;
    flex: 0 0 auto;
    border-radius: 8px;
    object-fit: cover;
    user-select: none;
    -webkit-user-drag: none;
  }
}

@media (max-width: 380px) {
  .features {
    grid-template-columns: 1fr;
  }
}

@supports (height: 100dvh) {
  .landing {
    min-height: 100dvh;
  }

  @media (max-width: 920px) {
    .poster-wall {
      height: 72dvh;
      inset: -8dvh -34vw auto;
    }
  }
}

@keyframes carousel-pan {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(var(--carousel-shift, -320px), 0, 0);
  }
}

@keyframes orbit-card {
  0% {
    opacity: 0.38;
    z-index: 1;
    transform: translate(-245%, -50%) scale(0.82) rotateY(24deg);
  }

  16.66% {
    opacity: 0.88;
    z-index: 2;
    transform: translate(-132%, -50%) scale(0.94) rotateY(14deg);
  }

  33.33% {
    opacity: 1;
    z-index: 5;
    transform: translate(-50%, -50%) scale(1.12) rotateY(0deg);
  }

  50% {
    opacity: 0.88;
    z-index: 2;
    transform: translate(32%, -50%) scale(0.94) rotateY(-14deg);
  }

  66.66% {
    opacity: 0.38;
    z-index: 1;
    transform: translate(145%, -50%) scale(0.82) rotateY(-24deg);
  }

  83.33% {
    opacity: 0;
    z-index: 0;
    transform: translate(185%, -50%) scale(0.74) rotateY(-30deg);
  }

  100% {
    opacity: 0.38;
    z-index: 1;
    transform: translate(-245%, -50%) scale(0.82) rotateY(24deg);
  }
}