:root {
  color-scheme: dark;
  --orange: #ff7a1a;
  --pink: #f0449a;
  --ink: #f8fafc;
  --muted: rgba(226, 232, 240, .72);
  --soft: rgba(255, 255, 255, .08);
  --soft-strong: rgba(255, 255, 255, .14);
  --line: rgba(255, 255, 255, .16);
  --shadow: 0 24px 70px rgba(0, 0, 0, .28);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: #0d111a;
  overflow-x: hidden;
}

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

.wallpaper-video,
.wallpaper-shade {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.wallpaper-video {
  object-fit: cover;
  z-index: -3;
  filter: saturate(1.08) contrast(1.04);
}

.wallpaper-shade {
  z-index: -2;
  background:
    radial-gradient(circle at 82% 18%, rgba(240, 68, 154, .20), transparent 36%),
    linear-gradient(180deg, rgba(8, 11, 18, .64) 0%, rgba(8, 11, 18, .70) 42%, rgba(246, 248, 252, .28) 42%, rgba(246, 248, 252, .22) 100%);
  backdrop-filter: blur(1px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 72px);
  background: rgba(12, 16, 24, .38);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  backdrop-filter: blur(18px);
}

.brand,
.top-nav,
.hero-actions,
.profit-tags,
.card-top,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 14px;
  font-weight: 900;
}

.brand-mark,
.product-icon {
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--orange), var(--pink));
  box-shadow: 0 18px 38px rgba(240, 68, 154, .24);
}

.brand-mark {
  width: 42px;
  height: 42px;
  font-size: 18px;
}

.brand-text {
  font-size: 17px;
}

.top-nav {
  gap: 28px;
  font-size: 14px;
  font-weight: 800;
  color: rgba(255, 255, 255, .76);
}

.top-nav a {
  transition: color .2s ease, transform .2s ease;
}

.top-nav a:hover {
  color: #fff;
  transform: translateY(-1px);
}

.nav-button {
  height: 38px;
  padding: 0 16px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, .14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .16);
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  color: #fff;
  background: rgba(255, 255, 255, .1);
  border-radius: 8px;
  height: 38px;
  padding: 0 14px;
  font-weight: 800;
}

.mobile-nav {
  position: sticky;
  top: 76px;
  z-index: 19;
  margin: 0 16px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(12, 16, 24, .72);
  backdrop-filter: blur(18px);
}

.mobile-nav a {
  display: block;
  padding: 12px 10px;
  color: rgba(255,255,255,.82);
  font-weight: 800;
}

.hero {
  min-height: 354px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 624px);
  align-items: center;
  gap: 54px;
  padding: 48px clamp(20px, 5vw, 72px) 64px;
}

.eyebrow {
  margin: 0 0 15px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 28px;
  font-size: clamp(42px, 5vw, 70px);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-text {
  max-width: 690px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.hero-actions {
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 0 22px;
  font-weight: 900;
  border: 1px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button:hover,
.product-card:hover,
.guide-grid a:hover {
  transform: translateY(-3px);
}

.button.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--orange), var(--pink));
  box-shadow: 0 18px 44px rgba(255, 122, 26, .28);
}

.button.secondary {
  color: #fff;
  background: rgba(255, 255, 255, .18);
  border-color: rgba(255, 255, 255, .22);
  backdrop-filter: blur(14px);
}

.profit-card {
  justify-self: stretch;
  border: 1px solid rgba(255, 255, 255, .20);
  border-radius: 8px;
  padding: 30px 32px;
  background: rgba(255, 255, 255, .22);
  color: #fff;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(1.12);
}

.profit-value {
  display: block;
  margin-bottom: 6px;
  font-size: 32px;
  font-weight: 900;
}

.profit-label {
  color: rgba(255, 255, 255, .76);
  font-size: 14px;
}

.profit-line {
  height: 8px;
  margin: 20px 0 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .18);
  overflow: hidden;
  position: relative;
}

.profit-line span {
  display: block;
  height: 100%;
  width: 78%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--orange), var(--pink));
  animation: profitWave 2.8s ease-in-out infinite;
}

.profit-line::after,
.signal::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-120%);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.42), transparent);
  animation: waveShine 2.4s ease-in-out infinite;
}

.profit-tags {
  gap: 10px;
  flex-wrap: wrap;
}

.profit-tags span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .18);
  color: #fff7ed;
  font-size: 13px;
  font-weight: 900;
}

.products-section {
  padding: 42px clamp(20px, 5vw, 72px) 72px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.section-heading h2,
.scenes-section h2,
.guide-section h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 3vw, 44px);
  line-height: 1.12;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.product-card {
  min-height: 300px;
  display: flex;
  flex-direction: column;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, .24);
  padding: 24px 22px;
  color: #fff;
  background: rgba(255, 255, 255, .11);
  box-shadow: 0 22px 70px rgba(0, 0, 0, .18);
  backdrop-filter: blur(18px) saturate(1.1);
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.product-card:hover {
  border-color: rgba(255, 122, 26, .62);
  background: rgba(255, 255, 255, .20);
}

.card-top {
  justify-content: space-between;
  margin-bottom: 20px;
}

.product-icon {
  width: 44px;
  height: 44px;
  font-size: 16px;
  font-weight: 900;
}

.badge {
  padding: 7px 10px;
  border-radius: 999px;
  color: #fff;
  background: rgba(10, 13, 20, .62);
  border: 1px solid rgba(255, 255, 255, .14);
  font-size: 12px;
  font-weight: 900;
}

.product-card h3 {
  margin-bottom: 12px;
  color: #fff;
  font-size: 24px;
  line-height: 1.2;
}

.product-card p {
  margin-bottom: 24px;
  color: rgba(255, 255, 255, .76);
  line-height: 1.6;
  font-size: 15px;
}

.signal {
  margin-top: auto;
  margin-bottom: 18px;
  border-radius: 8px;
  padding: 12px;
  background: rgba(255, 255, 255, .12);
  display: grid;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.signal span,
.signal i,
.signal b {
  display: block;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .26);
}

.signal span {
  width: 72%;
  background: linear-gradient(90deg, var(--orange), var(--pink));
  animation: soundWaveMain 1.55s ease-in-out infinite;
}

.signal i {
  width: 94%;
  animation: soundWaveMid 1.75s ease-in-out infinite;
}

.signal b {
  width: 54%;
  animation: soundWaveLow 1.35s ease-in-out infinite;
}

.product-card:nth-child(2) .signal span,
.product-card:nth-child(2) .signal i,
.product-card:nth-child(2) .signal b {
  animation-delay: .18s;
}

.product-card:nth-child(3) .signal span,
.product-card:nth-child(3) .signal i,
.product-card:nth-child(3) .signal b {
  animation-delay: .34s;
}

.product-card:nth-child(4) .signal span,
.product-card:nth-child(4) .signal i,
.product-card:nth-child(4) .signal b {
  animation-delay: .52s;
}

.product-card small {
  color: rgba(255, 255, 255, .66);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.scenes-section,
.guide-section {
  margin: 0 clamp(20px, 5vw, 72px) 34px;
  border: 1px solid rgba(255, 255, 255, .20);
  border-radius: 8px;
  background: rgba(12, 16, 24, .42);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.scenes-section {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: 44px;
  padding: 36px;
}

.scenes-section p {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.workflow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.workflow li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, .10);
  border: 1px solid rgba(255, 255, 255, .12);
}

.workflow strong {
  color: var(--orange);
  font-size: 14px;
}

.guide-section {
  padding: 36px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.guide-grid a {
  border-radius: 8px;
  padding: 18px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .16);
  font-weight: 900;
  transition: transform .2s ease, background .2s ease;
}

@keyframes soundWaveMain {
  0%, 100% { width: 48%; opacity: .95; }
  35% { width: 86%; opacity: 1; }
  65% { width: 66%; opacity: .92; }
}

@keyframes soundWaveMid {
  0%, 100% { width: 82%; opacity: .55; }
  40% { width: 96%; opacity: .85; }
  70% { width: 58%; opacity: .62; }
}

@keyframes soundWaveLow {
  0%, 100% { width: 38%; opacity: .48; }
  45% { width: 72%; opacity: .75; }
  78% { width: 52%; opacity: .58; }
}

@keyframes profitWave {
  0%, 100% { width: 62%; }
  38% { width: 86%; }
  68% { width: 72%; }
}

@keyframes waveShine {
  0%, 24% { transform: translateX(-120%); opacity: 0; }
  42% { opacity: .9; }
  72%, 100% { transform: translateX(120%); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

.site-footer {
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 5vw, 72px) 42px;
  color: rgba(255,255,255,.56);
  font-size: 13px;
}

@media (max-width: 1100px) {
  .hero,
  .scenes-section {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .top-nav {
    display: none;
  }

  .menu-button {
    display: inline-flex;
    align-items: center;
  }

  .site-header {
    height: 68px;
  }

  .mobile-nav {
    top: 68px;
  }

  .hero {
    padding-top: 42px;
    gap: 28px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-text {
    font-size: 16px;
  }

  .product-grid,
  .guide-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    min-height: 260px;
  }

  .section-heading {
    display: block;
  }

  .scenes-section,
  .guide-section {
    padding: 24px;
  }

  .site-footer {
    display: grid;
  }
}