:root {
  color-scheme: dark;
  --background: #07090f;
  --surface: rgba(255, 255, 255, 0.055);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f8f8fb;
  --muted: #a9adbb;
  --music: #ff4fb8;
  --music-soft: #a855f7;
  --video: #48a9ff;
  --video-soft: #6d5dfc;
  --max-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  width: 100%;
  max-width: 100vw;
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 8% 25%, rgba(255, 79, 184, 0.13), transparent 30rem),
    radial-gradient(circle at 91% 54%, rgba(72, 169, 255, 0.12), transparent 34rem),
    var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body::before {
  position: fixed;
  z-index: -2;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 88%);
  content: "";
}

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

.page-atmosphere {
  position: fixed;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.page-atmosphere span {
  position: absolute;
  width: min(54vw, 700px);
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.12;
  animation: atmosphereFloat 14s ease-in-out infinite alternate;
}

.page-atmosphere span:nth-child(1) {
  top: -28vw;
  left: -12vw;
  background: var(--music);
}

.page-atmosphere span:nth-child(2) {
  top: 12vh;
  right: -22vw;
  background: var(--video);
  animation-delay: -5s;
}

.page-atmosphere span:nth-child(3) {
  bottom: -32vw;
  left: 36vw;
  background: #7657ff;
  animation-delay: -9s;
}

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 50%;
  display: flex;
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transform: translateX(-50%);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.brand-symbol {
  position: relative;
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.055);
}

.brand-symbol i {
  position: absolute;
  width: 9px;
  height: 17px;
  border-radius: 99px;
  transform: rotate(38deg);
}

.brand-symbol i:first-child {
  margin-left: -8px;
  background: linear-gradient(var(--music), #ff8a78);
}

.brand-symbol i:last-child {
  margin-left: 8px;
  background: linear-gradient(var(--video), var(--video-soft));
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-header nav a {
  padding: 10px 14px;
  border-radius: 12px;
  color: var(--muted);
  font-size: 14px;
  transition: color 180ms ease, background 180ms ease;
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
}

main {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
}

.hero {
  display: flex;
  min-height: 620px;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  padding: 150px 20px 86px;
  text-align: center;
}

.hero > * {
  max-width: 100%;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 22px;
  color: #c8cad3;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--music), var(--video));
  box-shadow: 0 0 18px rgba(194, 112, 255, 0.9);
}

.hero h1 {
  width: 100%;
  max-width: 980px;
  margin: 0;
  font-size: clamp(42px, 6.3vw, 84px);
  font-weight: 760;
  letter-spacing: -0.065em;
  line-height: 1.09;
}

.hero h1 em {
  background: linear-gradient(100deg, #ff74c6 10%, #c77dff 49%, #61b9ff 88%);
  background-clip: text;
  color: transparent;
  font-style: normal;
}

.hero-lead {
  max-width: 700px;
  margin: 30px auto 0;
  color: var(--muted);
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 1.9;
}

.hero-guide {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  gap: 12px;
  margin-top: 38px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: #e8e8ee;
  font-size: 14px;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.hero-guide:hover,
.hero-guide:focus-visible {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.hero-guide span {
  font-size: 18px;
}

.products {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  scroll-margin-top: 20px;
}

.product-card {
  position: relative;
  display: flex;
  min-height: 700px;
  overflow: hidden;
  padding: 38px;
  border: 1px solid var(--line);
  border-radius: 38px;
  background: var(--surface);
  isolation: isolate;
  transition: border-color 260ms ease, box-shadow 260ms ease, transform 260ms ease;
}

.product-card:hover,
.product-card:focus-visible {
  transform: translateY(-7px);
}

.music-card:hover,
.music-card:focus-visible {
  border-color: rgba(255, 93, 190, 0.5);
  box-shadow: 0 28px 100px rgba(158, 35, 116, 0.22);
}

.video-card:hover,
.video-card:focus-visible {
  border-color: rgba(72, 169, 255, 0.5);
  box-shadow: 0 28px 100px rgba(31, 101, 168, 0.22);
}

.card-glow {
  position: absolute;
  z-index: -1;
  right: -18%;
  bottom: -16%;
  width: 86%;
  aspect-ratio: 1;
  border-radius: 50%;
  opacity: 0.24;
  filter: blur(60px);
  transition: opacity 260ms ease, transform 500ms ease;
}

.music-card .card-glow {
  background: var(--music);
}

.video-card .card-glow {
  background: var(--video);
}

.product-card:hover .card-glow,
.product-card:focus-visible .card-glow {
  opacity: 0.38;
  transform: scale(1.12);
}

.card-index {
  position: absolute;
  top: 35px;
  right: 38px;
  color: rgba(255, 255, 255, 0.38);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
}

.product-copy {
  position: relative;
  z-index: 3;
  display: flex;
  width: 100%;
  flex-direction: column;
  align-items: flex-start;
}

.product-brand {
  display: flex;
  align-items: center;
  gap: 15px;
}

.product-brand > img {
  width: 58px;
  height: 58px;
  flex: 0 0 auto;
  border-radius: 17px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.32);
}

.product-brand > img {
  object-fit: cover;
}

.product-brand > span:last-child {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.product-brand small {
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.product-brand strong {
  font-size: 26px;
  letter-spacing: -0.04em;
}

.product-description {
  max-width: 470px;
  margin-top: 28px;
  color: #c5c7d0;
  font-size: 15px;
  line-height: 1.9;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.feature-tags > span {
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 999px;
  background: rgba(8, 9, 15, 0.25);
  color: #dbdce2;
  font-size: 11px;
}

.card-action {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-top: auto;
  padding: 13px 0;
  font-size: 14px;
  font-weight: 720;
}

.card-action b {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  font-size: 13px;
  transition: transform 180ms ease;
}

.product-card:hover .card-action b,
.product-card:focus-visible .card-action b {
  transform: translate(2px, -2px);
}

.music-visual,
.skyplayer-visual {
  position: absolute;
  z-index: 1;
  right: 20px;
  bottom: 62px;
  width: 72%;
  height: 310px;
}

.vinyl-ring {
  position: absolute;
  right: -70px;
  bottom: -80px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 0 8%, rgba(255, 255, 255, 0.14) 8.5% 9%, transparent 9.5% 27%, rgba(255, 255, 255, 0.08) 27.5% 28%, transparent 28.5% 46%, rgba(255, 255, 255, 0.06) 46.5% 47%, transparent 47.5%),
    rgba(9, 5, 12, 0.5);
  box-shadow: 0 20px 80px rgba(255, 79, 184, 0.16);
}

.phone-preview {
  position: absolute;
  display: block;
  overflow: hidden;
  width: 142px;
  height: 292px;
  border: 5px solid #17131b;
  border-radius: 28px;
  background: #131018;
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.5);
  transition: transform 400ms ease;
}

.phone-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.phone-preview-back {
  right: 128px;
  bottom: -58px;
  opacity: 0.72;
  transform: rotate(-10deg) scale(0.88);
}

.phone-preview-front {
  right: 18px;
  bottom: -32px;
  transform: rotate(7deg);
}

.music-card:hover .phone-preview-back,
.music-card:focus-visible .phone-preview-back {
  transform: rotate(-13deg) translate(-8px, -5px) scale(0.9);
}

.music-card:hover .phone-preview-front,
.music-card:focus-visible .phone-preview-front {
  transform: rotate(4deg) translate(4px, -9px);
}

.sound-wave {
  position: absolute;
  bottom: 8px;
  left: 4px;
  display: flex;
  height: 74px;
  align-items: flex-end;
  gap: 6px;
  opacity: 0.8;
}

.sound-wave i {
  display: block;
  width: 4px;
  border-radius: 99px;
  background: linear-gradient(to top, var(--music), #ffd2ec);
  animation: wavePulse 1.4s ease-in-out infinite alternate;
}

.sound-wave i:nth-child(1),
.sound-wave i:nth-child(7) {
  height: 25%;
}

.sound-wave i:nth-child(2),
.sound-wave i:nth-child(6) {
  height: 55%;
  animation-delay: -0.6s;
}

.sound-wave i:nth-child(3),
.sound-wave i:nth-child(5) {
  height: 78%;
  animation-delay: -0.9s;
}

.sound-wave i:nth-child(4) {
  height: 100%;
  animation-delay: -0.3s;
}

.skyplayer-visual {
  right: 12px;
  bottom: 50px;
  width: 76%;
}

.skyplayer-halo {
  position: absolute;
  right: -48px;
  bottom: -84px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(91, 181, 255, 0.17);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(72, 169, 255, 0.2), transparent 68%);
  box-shadow: 0 0 90px rgba(61, 133, 255, 0.15);
}

.skyplayer-shot {
  position: absolute;
  display: block;
  overflow: hidden;
  width: 142px;
  height: 307px;
  border: 5px solid #101722;
  border-radius: 28px;
  background: #111924;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  transition: opacity 400ms ease, transform 400ms ease;
}

.skyplayer-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.skyplayer-shot-back {
  right: 142px;
  bottom: -54px;
  opacity: 0.78;
  transform: rotate(-9deg) scale(0.88);
}

.skyplayer-shot-front {
  right: 22px;
  bottom: -28px;
  transform: rotate(6deg);
}

.video-card:hover .skyplayer-shot-back,
.video-card:focus-visible .skyplayer-shot-back {
  opacity: 0.92;
  transform: rotate(-12deg) translate(-8px, -6px) scale(0.9);
}

.video-card:hover .skyplayer-shot-front,
.video-card:focus-visible .skyplayer-shot-front {
  transform: rotate(3deg) translate(5px, -10px);
}

.media-badge {
  position: absolute;
  z-index: 2;
  right: 180px;
  bottom: 5px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 13px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 15px;
  background: rgba(8, 19, 34, 0.78);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(14px);
}

.media-badge > i {
  width: 0;
  height: 0;
  margin-left: 3px;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 11px solid #70c7ff;
}

.media-badge > span {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.media-badge b {
  font-size: 11px;
}

.media-badge small {
  color: #9caaba;
  font-size: 9px;
}

.shared-value {
  padding: 124px 0 112px;
  text-align: center;
}

.shared-value > p {
  margin: 0 0 38px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.14em;
}

.shared-value > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.shared-value span {
  display: flex;
  min-height: 110px;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.shared-value span + span {
  border-left: 1px solid var(--line);
}

.shared-value b {
  color: var(--text);
  font-size: 18px;
}

.site-footer {
  display: flex;
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 100px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 0 auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #747986;
  font-size: 12px;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: #b8bbc4;
}

@keyframes atmosphereFloat {
  from {
    transform: translate3d(-3%, -2%, 0) scale(0.92);
  }
  to {
    transform: translate3d(5%, 4%, 0) scale(1.08);
  }
}

@keyframes wavePulse {
  from {
    transform: scaleY(0.45);
  }
  to {
    transform: scaleY(1);
  }
}

@media (max-width: 980px) {
  .hero {
    min-height: 560px;
  }

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

  .product-card {
    min-height: 620px;
  }

  .music-visual,
  .skyplayer-visual {
    width: 58%;
  }
}

@media (max-width: 640px) {
  .site-header {
    width: calc(100vw - 28px);
    min-height: 72px;
  }

  .site-brand {
    font-size: 13px;
  }

  .brand-symbol {
    width: 30px;
    height: 30px;
  }

  .site-header nav {
    gap: 0;
  }

  .site-header nav a {
    padding: 9px 7px;
    font-size: 12px;
  }

  main {
    width: calc(100vw - 28px);
  }

  .hero {
    min-height: 570px;
    padding: 126px 4px 64px;
  }

  .hero h1 {
    font-size: clamp(39px, 12vw, 58px);
    letter-spacing: -0.07em;
    overflow-wrap: anywhere;
  }

  .hero h1 br {
    display: none;
  }

  .hero-lead {
    margin-top: 24px;
    font-size: 15px;
    line-height: 1.75;
  }

  .hero-guide {
    margin-top: 30px;
  }

  .products {
    gap: 14px;
  }

  .product-card {
    min-width: 0;
    min-height: 650px;
    padding: 26px;
    border-radius: 28px;
  }

  .card-index {
    top: 27px;
    right: 26px;
  }

  .product-brand > img {
    width: 52px;
    height: 52px;
    border-radius: 15px;
  }

  .product-brand strong {
    font-size: 23px;
  }

  .product-description {
    margin-top: 23px;
    font-size: 14px;
    line-height: 1.75;
  }

  .music-visual,
  .skyplayer-visual {
    right: 8px;
    bottom: 64px;
    width: 92%;
    transform: scale(0.9);
    transform-origin: right bottom;
  }

  .sound-wave {
    left: 20px;
  }

  .shared-value {
    padding: 84px 0 76px;
  }

  .shared-value > div {
    grid-template-columns: 1fr;
  }

  .shared-value span {
    min-height: 92px;
  }

  .shared-value span + span {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .site-footer {
    width: calc(100% - 28px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 26px 0;
  }

  .site-footer p {
    margin: 0;
    line-height: 1.7;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}