:root {
  color-scheme: light;
  --ink: #eaf7ff;
  --dark-ink: #122033;
  --muted: #8aa0b8;
  --line: rgba(123, 216, 226, 0.16);
  --navy: #081827;
  --deep: #030b14;
  --blue: #2f8cff;
  --teal: #18d0c2;
  --aqua: #7ed6df;
  --white: #ffffff;
  --soft: #eef6fb;
  --panel: rgba(8, 25, 42, 0.72);
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.32);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--dark-ink);
  background: #f7fbff;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  padding: 0 clamp(22px, 5vw, 72px);
  color: var(--white);
  background: rgba(3, 11, 20, 0.76);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  white-space: nowrap;
}

.brand img {
  width: 42px;
  height: 42px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 38px);
  font-size: 15px;
  color: rgba(255, 255, 255, 0.84);
}

.nav-links a {
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--aqua);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--deep);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(2, 8, 16, 0.96) 0%, rgba(4, 18, 31, 0.86) 43%, rgba(5, 21, 34, 0.42) 100%),
    radial-gradient(circle at 72% 30%, rgba(24, 208, 194, 0.22), rgba(24, 208, 194, 0) 28%),
    radial-gradient(circle at 48% 78%, rgba(47, 140, 255, 0.18), rgba(47, 140, 255, 0) 32%),
    linear-gradient(180deg, rgba(6, 22, 38, 0.08), rgba(3, 11, 20, 0.92)),
    url("/assets/guide_bg-CYQLE_94.png") center / cover no-repeat;
  transform: scale(1.02);
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(126, 214, 223, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 214, 223, 0.06) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(90deg, transparent, #000 20%, #000 86%, transparent);
}

.hero-media::after {
  content: "";
  position: absolute;
  top: 12%;
  right: 8%;
  width: min(44vw, 620px);
  aspect-ratio: 1;
  border: 1px solid rgba(126, 214, 223, 0.2);
  border-radius: 50%;
  box-shadow:
    inset 0 0 60px rgba(24, 208, 194, 0.1),
    0 0 80px rgba(47, 140, 255, 0.08);
  opacity: 0.8;
  animation: slowRotate 34s linear infinite;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  background: linear-gradient(180deg, rgba(3, 11, 20, 0), #06111d);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
  padding: 126px 0 92px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1.1;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 690px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(18px, 2.1vw, 24px);
  line-height: 1.72;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 6px;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--blue), #18b8d0);
  box-shadow: 0 16px 42px rgba(47, 140, 255, 0.34);
}

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.42);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(820px, 100%);
  margin: 54px 0 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(126, 214, 223, 0.18);
  background: rgba(8, 25, 42, 0.42);
  backdrop-filter: blur(14px);
}

.hero-metrics div {
  padding: 22px 24px;
  background: rgba(8, 28, 48, 0.38);
}

.hero-metrics dt {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.hero-metrics dd {
  margin: 8px 0 0;
  font-size: 24px;
  font-weight: 800;
}

.product-console {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 84px;
  width: min(445px, 38vw);
  overflow: hidden;
  color: var(--white);
  background: linear-gradient(180deg, rgba(9, 30, 50, 0.76), rgba(5, 15, 26, 0.88));
  border: 1px solid rgba(126, 214, 223, 0.22);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.console-top {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 16px;
  border-bottom: 1px solid rgba(126, 214, 223, 0.14);
}

.console-top span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 16px rgba(24, 208, 194, 0.8);
}

.console-top span:nth-child(2) {
  background: var(--blue);
}

.console-top span:nth-child(3) {
  background: #d7f7ff;
}

.console-top strong {
  margin-left: auto;
  color: rgba(255, 255, 255, 0.62);
  font-size: 11px;
  letter-spacing: 0;
}

.console-body {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(120px, 0.8fr);
  gap: 14px;
  padding: 18px;
}

.console-main,
.console-side div {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(126, 214, 223, 0.12);
}

.console-main {
  min-height: 228px;
  padding: 18px;
}

.signal-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
}

.signal-row b {
  color: var(--aqua);
  font-size: 20px;
}

.wave-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  align-items: end;
  gap: 9px;
  height: 116px;
  margin-top: 26px;
}

.wave-grid i {
  display: block;
  min-height: 18px;
  background: linear-gradient(180deg, rgba(126, 214, 223, 0.95), rgba(47, 140, 255, 0.28));
  box-shadow: 0 0 18px rgba(24, 208, 194, 0.26);
  animation: pulseBar 2.8s ease-in-out infinite;
}

.wave-grid i:nth-child(1) { height: 42%; }
.wave-grid i:nth-child(2) { height: 76%; animation-delay: 0.2s; }
.wave-grid i:nth-child(3) { height: 54%; animation-delay: 0.4s; }
.wave-grid i:nth-child(4) { height: 92%; animation-delay: 0.6s; }
.wave-grid i:nth-child(5) { height: 66%; animation-delay: 0.8s; }
.wave-grid i:nth-child(6) { height: 82%; animation-delay: 1s; }

.pipeline {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 26px;
}

.pipeline span {
  flex: 1;
  min-width: 0;
  padding: 8px 0;
  color: rgba(255, 255, 255, 0.72);
  text-align: center;
  font-size: 11px;
  border: 1px solid rgba(126, 214, 223, 0.16);
  background: rgba(24, 208, 194, 0.08);
}

.console-side {
  display: grid;
  gap: 10px;
}

.console-side div {
  padding: 14px;
}

.console-side small {
  display: block;
  color: rgba(255, 255, 255, 0.48);
}

.console-side strong {
  display: block;
  margin-top: 10px;
  color: var(--white);
}

.section,
.section-band {
  position: relative;
  padding: clamp(72px, 9vw, 116px) 0;
}

.section-band {
  background: var(--soft);
}

.tech-band {
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(5, 17, 30, 0.96), rgba(8, 32, 52, 0.94)),
    url("/assets/guide_bg-CYQLE_94.png") center / cover no-repeat;
}

.section-inner {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(34px, 7vw, 86px);
  align-items: start;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

.intro p:not(.section-kicker),
.platform-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.tech-band h2,
.dark-section h2 {
  color: var(--white);
}

.tech-band .intro-grid > p,
.dark-section .platform-copy p {
  color: rgba(234, 247, 255, 0.68);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1fr);
  gap: clamp(28px, 7vw, 90px);
  align-items: end;
  margin-bottom: 42px;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid rgba(16, 49, 75, 0.1);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 28px 90px rgba(16, 38, 62, 0.12);
  backdrop-filter: blur(12px);
}

.solution-card {
  min-height: 310px;
  padding: 34px 28px;
  border-right: 1px solid rgba(16, 49, 75, 0.1);
  transition: transform 0.24s ease, background 0.24s ease, box-shadow 0.24s ease;
}

.solution-card:hover {
  transform: translateY(-8px);
  background: linear-gradient(180deg, #ffffff, #f3fbff);
  box-shadow: 0 22px 46px rgba(16, 68, 112, 0.12);
}

.solution-card:last-child {
  border-right: 0;
}

.card-index {
  display: block;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 52px;
}

.solution-card h3,
.visual-card h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.32;
}

.solution-card p,
.visual-card p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.72;
}

.platform-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 0.74fr);
  gap: clamp(36px, 7vw, 86px);
  align-items: center;
}

.dark-section {
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 25%, rgba(24, 208, 194, 0.18), transparent 32%),
    radial-gradient(circle at 82% 70%, rgba(47, 140, 255, 0.18), transparent 32%),
    linear-gradient(135deg, #030b14 0%, #071929 52%, #03101c 100%);
}

.platform-copy h2 {
  margin-bottom: 24px;
}

.capability-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.capability-list span {
  padding: 10px 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(126, 214, 223, 0.18);
  border-radius: 6px;
  font-weight: 700;
  backdrop-filter: blur(12px);
}

.platform-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background:
    linear-gradient(135deg, rgba(16, 38, 62, 0.96), rgba(22, 86, 125, 0.94)),
    url("/assets/guide_bg-CYQLE_94.png") center / cover no-repeat;
  color: var(--white);
  box-shadow: var(--shadow);
  border: 1px solid rgba(126, 214, 223, 0.2);
}

.platform-panel div {
  min-height: 168px;
  padding: 28px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.platform-panel div:nth-child(2n) {
  border-right: 0;
}

.platform-panel div:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.platform-panel strong {
  display: block;
  font-size: 28px;
  line-height: 1;
}

.platform-panel span {
  display: block;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.72);
}

.visual-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.visual-card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(16, 49, 75, 0.1);
  box-shadow: 0 18px 46px rgba(16, 38, 62, 0.08);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.visual-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 64px rgba(16, 38, 62, 0.14);
}

.visual-card img {
  width: 100%;
  aspect-ratio: 490 / 324;
  object-fit: cover;
}

.visual-card div {
  padding: 24px;
}

.site-footer {
  color: rgba(255, 255, 255, 0.78);
  background: #071625;
}

@keyframes slowRotate {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulseBar {
  0%, 100% {
    opacity: 0.62;
    transform: scaleY(0.86);
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

.footer-inner {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
  padding: 34px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.footer-inner > div:first-child {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-inner img {
  width: 38px;
  height: 38px;
}

.footer-inner p {
  margin: 0;
  color: var(--white);
  font-weight: 700;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px 28px;
}

.footer-meta a {
  color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 70px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 780px;
  }

  .product-console {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(100%, 560px);
    margin-top: 38px;
  }

  .intro-grid,
  .section-heading,
  .platform-grid {
    grid-template-columns: 1fr;
  }

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

  .solution-card:nth-child(2n) {
    border-right: 0;
  }

  .solution-card:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0 18px;
  }

  .brand span {
    font-size: 16px;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner,
  .section-inner,
  .footer-inner {
    width: calc(100% - 36px);
  }

  .hero-inner {
    padding: 112px 0 72px;
  }

  .hero-metrics,
  .platform-panel,
  .console-body {
    grid-template-columns: 1fr;
  }

  .product-console {
    display: none;
  }

  .hero-metrics div,
  .platform-panel div {
    padding: 20px;
  }

  .solution-grid,
  .visual-grid {
    grid-template-columns: 1fr;
  }

  .solution-card {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .solution-card:last-child {
    border-bottom: 0;
  }

  .card-index {
    margin-bottom: 34px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-meta {
    justify-content: flex-start;
  }
}