:root {
  color-scheme: dark;
  --bg: #090912;
  --bg-2: #0f0f23;
  --panel: #151525;
  --panel-strong: #1b1a32;
  --ink: #f8fafc;
  --muted: #a6adbb;
  --soft: #d6d9e3;
  --line: #312e81;
  --line-soft: rgb(255 255 255 / 0.1);
  --fire: #ef2b1d;
  --fire-soft: #ff8a6b;
  --violet: #7c3aed;
  --cyan: #22d3ee;
  --pink: #f472b6;
  --amber: #fbbf24;
  --shadow: 0 30px 100px rgb(0 0 0 / 0.45);
  --radius: 8px;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgb(239 43 29 / 0.2), transparent 30rem),
    radial-gradient(circle at 84% 18%, rgb(124 58 237 / 0.18), transparent 34rem),
    linear-gradient(180deg, #080811 0%, var(--bg-2) 52%, #090912 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgb(255 255 255 / 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 74%);
}

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

img,
svg {
  display: block;
}

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line-soft);
  background: rgb(9 9 18 / 0.78);
  backdrop-filter: blur(18px);
}

.brand,
.nav,
.hero-actions,
.proof-strip,
.player-controls,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 0.16);
  border-radius: 999px;
  background: #f3f4f6;
  box-shadow: 0 0 28px rgb(255 255 255 / 0.16);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav {
  justify-content: center;
  gap: clamp(16px, 3vw, 34px);
  color: var(--muted);
  font-size: 14px;
}

.nav a,
.site-footer a,
.track a {
  transition: color 180ms ease-out, background 180ms ease-out, border-color 180ms ease-out;
}

.nav a:hover,
.site-footer a:hover,
.track a:hover {
  color: var(--fire-soft);
}

.nav-cta,
.button,
.track a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 800;
  transition:
    transform 220ms cubic-bezier(0.16, 1, 0.3, 1),
    background 220ms ease-out,
    border-color 220ms ease-out,
    box-shadow 220ms ease-out;
}

.button svg {
  width: 18px;
  height: 18px;
  margin-right: 8px;
  fill: currentColor;
  stroke: currentColor;
  stroke-width: 2;
}

.button .stroke-icon {
  fill: none;
}

.nav-cta,
.button.primary {
  color: #fff8f6;
  background: linear-gradient(135deg, var(--fire), #ff5a1f);
  box-shadow: 0 16px 42px rgb(239 43 29 / 0.32);
}

.button.secondary {
  color: var(--ink);
  background: rgb(255 255 255 / 0.07);
  border-color: var(--line-soft);
}

.nav-cta:hover,
.button:hover,
.track a:hover {
  transform: translateY(-2px);
}

.nav-cta:active,
.button:active,
.track a:active {
  transform: translateY(1px);
}

.hero {
  min-height: calc(100dvh - 66px);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: clamp(30px, 5vw, 76px);
  padding: clamp(54px, 7vw, 96px) clamp(18px, 5vw, 72px) clamp(48px, 7vw, 84px);
}

.hero-copy {
  max-width: 740px;
}

.eyebrow,
.service-kicker {
  margin: 0 0 12px;
  color: var(--fire-soft);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 12ch;
  margin-bottom: 24px;
  font-size: clamp(44px, 7.2vw, 92px);
  line-height: 0.98;
  letter-spacing: 0;
  text-shadow: 0 0 28px rgb(255 255 255 / 0.14);
}

h2 {
  max-width: 16ch;
  margin-bottom: 0;
  font-size: clamp(31px, 4.8vw, 58px);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: clamp(20px, 2.3vw, 28px);
  line-height: 1.2;
}

.hero-lede,
.case-intro p,
.contact-copy p {
  max-width: 66ch;
  color: var(--soft);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.85;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0 30px;
}

.proof-strip {
  width: min(100%, 630px);
  justify-content: space-between;
  gap: 18px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.proof-strip div {
  min-width: 0;
}

.proof-strip dt {
  color: var(--muted);
  font-size: 12px;
}

.proof-strip dd {
  margin: 6px 0 0;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 900;
}

.hero-studio {
  position: relative;
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) minmax(240px, 1fr);
  gap: 16px;
  align-items: end;
}

.hero-studio::before {
  content: "";
  position: absolute;
  inset: -34px -22px;
  z-index: -1;
  border: 1px solid rgb(255 255 255 / 0.08);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgb(124 58 237 / 0.2), rgb(239 43 29 / 0.16) 42%, rgb(251 191 36 / 0.14)),
    rgb(255 255 255 / 0.035);
  box-shadow: var(--shadow);
}

.album-card,
.player-card,
.track,
.case-card,
.contact-list,
.qr-card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgb(255 255 255 / 0.085), rgb(255 255 255 / 0.045));
  box-shadow: 0 18px 60px rgb(0 0 0 / 0.24);
}

.album-card {
  position: relative;
  min-height: 460px;
  margin: 0;
  overflow: hidden;
}

.album-card img {
  width: 100%;
  height: 100%;
  min-height: 460px;
  object-fit: cover;
  filter: saturate(1.15) contrast(1.06);
}

.album-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 24%, rgb(5 5 12 / 0.9)),
    linear-gradient(135deg, rgb(239 43 29 / 0.28), transparent 48%, rgb(251 191 36 / 0.18));
}

.album-card figcaption {
  position: absolute;
  right: 16px;
  bottom: 16px;
  left: 16px;
  z-index: 1;
  display: grid;
  gap: 7px;
}

.album-card figcaption span,
.player-topline {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.album-card figcaption strong {
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.04;
}

.player-card {
  padding: clamp(22px, 3vw, 34px);
}

.player-topline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}

.live-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--fire);
  box-shadow: 0 0 18px var(--fire);
}

.player-card h2 {
  max-width: 11ch;
  font-size: clamp(28px, 4.2vw, 50px);
}

.waveform {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  align-items: end;
  gap: 6px;
  height: 120px;
  margin: 32px 0;
}

.waveform span {
  min-width: 6px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--fire), #ff7a1a);
  box-shadow: 0 0 22px rgb(239 43 29 / 0.3);
}

.waveform span:nth-child(1) { height: 36%; }
.waveform span:nth-child(2) { height: 62%; }
.waveform span:nth-child(3) { height: 88%; }
.waveform span:nth-child(4) { height: 48%; }
.waveform span:nth-child(5) { height: 74%; }
.waveform span:nth-child(6) { height: 100%; }
.waveform span:nth-child(7) { height: 56%; }
.waveform span:nth-child(8) { height: 82%; }
.waveform span:nth-child(9) { height: 43%; }
.waveform span:nth-child(10) { height: 68%; }
.waveform span:nth-child(11) { height: 93%; }
.waveform span:nth-child(12) { height: 52%; }

.player-controls {
  flex-wrap: wrap;
  gap: 8px;
}

.player-controls span {
  padding: 8px 10px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  color: var(--soft);
  background: rgb(255 255 255 / 0.055);
  font-size: 13px;
  font-weight: 800;
}

main > section:not(.hero) {
  padding: clamp(72px, 10vw, 126px) clamp(18px, 5vw, 72px);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(34px, 6vw, 86px);
  align-items: start;
}

.audience-list {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--line-soft);
}

.audience-list article {
  min-height: 180px;
  padding: clamp(22px, 3vw, 34px);
  background: rgb(255 255 255 / 0.045);
}

.audience-list article:nth-child(3) {
  grid-column: span 2;
}

.audience-list span,
.timeline span,
.track-number {
  color: var(--fire);
  font-weight: 900;
}

.audience-list p,
.track p,
.timeline p,
.case-card p,
.faq-list p {
  color: var(--muted);
  line-height: 1.75;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 0.62fr);
  gap: clamp(24px, 6vw, 80px);
  align-items: end;
  margin-bottom: clamp(32px, 5vw, 62px);
}

.playlist {
  display: grid;
  gap: 12px;
}

.track {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) auto;
  gap: clamp(16px, 3vw, 34px);
  align-items: center;
  padding: clamp(20px, 3vw, 30px);
}

.featured-track {
  grid-template-columns: 54px minmax(0, 1fr) minmax(240px, 0.42fr);
  background:
    linear-gradient(135deg, rgb(239 43 29 / 0.18), transparent 36%),
    linear-gradient(180deg, rgb(255 255 255 / 0.1), rgb(255 255 255 / 0.055));
}

.featured-track ul {
  margin: 0;
  padding-left: 20px;
  color: var(--soft);
  line-height: 1.85;
}

.track-number {
  font-size: 20px;
}

.track a {
  color: var(--ink);
  background: rgb(255 255 255 / 0.06);
  border-color: var(--line-soft);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(6, minmax(190px, 1fr));
  gap: 1px;
  padding: 0;
  margin: 0;
  overflow-x: auto;
  list-style: none;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--line-soft);
}

.timeline li {
  min-height: 230px;
  padding: 26px;
  background: rgb(255 255 255 / 0.045);
}

.timeline strong {
  display: block;
  margin-top: 48px;
  font-size: 20px;
}

.cases {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
  background:
    linear-gradient(135deg, rgb(124 58 237 / 0.16), transparent 42%),
    rgb(255 255 255 / 0.03);
}

.case-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.case-card {
  display: grid;
  align-content: start;
  gap: 14px;
  min-height: 100%;
  padding: clamp(18px, 2.4vw, 28px);
}

.case-card h3 {
  margin-bottom: 0;
}

.case-card ul {
  display: grid;
  gap: 8px;
  margin: 4px 0 0;
  padding-left: 18px;
  color: var(--soft);
  line-height: 1.65;
}

.case-visual {
  position: relative;
  min-height: 150px;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
}

.case-visual::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgb(255 255 255 / 0.18);
  border-radius: 12px;
}

.case-visual span {
  position: absolute;
  inset: auto 20px 20px 20px;
  height: 12px;
  border-radius: 999px;
  background: rgb(255 255 255 / 0.72);
  box-shadow: 0 -28px 0 rgb(255 255 255 / 0.18), 0 -56px 0 rgb(255 255 255 / 0.12);
}

.case-visual.nfc {
  background:
    radial-gradient(circle at 50% 48%, rgb(239 43 29 / 0.78), transparent 16%),
    radial-gradient(circle at 50% 48%, transparent 25%, rgb(239 43 29 / 0.24) 26%, transparent 38%),
    radial-gradient(circle at 50% 48%, transparent 46%, rgb(251 191 36 / 0.18) 47%, transparent 60%),
    #151525;
}

.case-visual.webapp {
  background:
    linear-gradient(90deg, rgb(239 43 29 / 0.24) 0 28%, transparent 28%),
    linear-gradient(180deg, rgb(124 58 237 / 0.34), rgb(34 211 238 / 0.1)),
    #151525;
}

.case-visual.render {
  background:
    radial-gradient(circle at 34% 30%, rgb(244 114 182 / 0.7), transparent 24%),
    radial-gradient(circle at 72% 62%, rgb(239 43 29 / 0.56), transparent 30%),
    linear-gradient(135deg, rgb(34 211 238 / 0.22), rgb(124 58 237 / 0.18)),
    #151525;
}

.case-visual.qa {
  background:
    linear-gradient(180deg, rgb(255 255 255 / 0.1), transparent 34%),
    radial-gradient(circle at 24% 42%, rgb(239 43 29 / 0.68), transparent 18%),
    radial-gradient(circle at 72% 52%, rgb(34 211 238 / 0.48), transparent 22%),
    #151525;
}


.faq-list {
  max-width: 940px;
  margin-left: auto;
}

details {
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

details:last-child {
  border-bottom: 1px solid var(--line-soft);
}

summary {
  cursor: pointer;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 900;
}

summary::marker {
  color: var(--fire);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background:
    radial-gradient(circle at 84% 24%, rgb(239 43 29 / 0.24), transparent 24rem),
    linear-gradient(135deg, #111128, #1a0808);
}

.contact-methods {
  display: grid;
  grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
  max-width: 780px;
  margin-top: 34px;
}

.qr-card {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 12px;
}

.qr-card img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 6px;
  object-fit: cover;
  background: #fff;
}

.qr-card figcaption {
  color: var(--soft);
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}

.contact-list {
  display: grid;
  align-content: center;
  gap: 18px;
  margin: 0;
  padding: clamp(18px, 2.6vw, 26px);
}

.contact-list div {
  display: grid;
  gap: 6px;
}

.contact-list dt {
  color: var(--fire-soft);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.contact-list dd {
  margin: 0;
  color: var(--ink);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.button:focus-visible,
.nav-cta:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgb(239 43 29 / 0.62);
  outline-offset: 3px;
}

.site-footer {
  gap: 16px;
  flex-wrap: wrap;
  justify-content: space-between;
  padding: 28px clamp(18px, 5vw, 72px);
  color: var(--muted);
  background: #080811;
}

.site-footer p {
  margin: 0;
}

.beian {
  font-size: 13px;
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}

@media (max-width: 1060px) {
  .hero,
  .section-grid,
  .section-heading,
  .featured-track,
  .cases,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-studio,
  .case-cards {
    grid-template-columns: 1fr 1fr;
  }

  .album-card,
  .album-card img {
    min-height: 380px;
  }
}

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .hero-studio,
  .audience-list,
  .track,
  .case-cards,
  .contact-methods {
    grid-template-columns: 1fr;
  }

  .audience-list article:nth-child(3) {
    grid-column: auto;
  }

  .track a {
    width: 100%;
  }

  .case-visual {
    min-height: 140px;
  }
}

@media (max-width: 620px) {
  .site-header {
    gap: 12px;
    padding-inline: 14px;
  }

  .brand span:last-child {
    display: none;
  }

  .nav-cta {
    min-height: 38px;
    padding-inline: 12px;
    font-size: 14px;
  }

  h1 {
    max-width: 11ch;
    font-size: 42px;
  }

  .hero {
    padding-top: 34px;
  }

  .hero-studio::before {
    inset: -16px -10px;
    border-radius: 16px;
  }

  .album-card,
  .album-card img {
    min-height: 300px;
  }

  .player-card h2 {
    max-width: 12ch;
  }

  .proof-strip {
    align-items: stretch;
    flex-direction: column;
  }

  .timeline {
    grid-template-columns: 1fr;
    overflow-x: visible;
  }
}