:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --bg-panel: rgba(255, 255, 255, 0.94);
  --bg-strong: #ffffff;
  --text: #172033;
  --muted: #5f6f88;
  --line: rgba(23, 32, 51, 0.08);
  --shadow-soft: 0 18px 48px rgba(31, 54, 88, 0.08);
  --shadow-card: 0 20px 60px rgba(24, 44, 80, 0.12);
  --accent: #1677ff;
  --accent-deep: #0b5ed7;
  --accent-warm: #69b1ff;
  --hero-blue: #d8ecff;
  --hero-green: #eaf4ff;
  --hero-orange: #dcecff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(22, 119, 255, 0.14), transparent 30%),
    radial-gradient(circle at top right, rgba(145, 213, 255, 0.16), transparent 26%),
    linear-gradient(180deg, #f8fbff 0%, #eef6ff 40%, #ffffff 100%);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
}

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

button {
  font: inherit;
}

.product-site {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 max(32px, calc((100vw - 1180px) / 2));
  height: 72px;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(23, 32, 51, 0.04);
  box-shadow: 0 10px 30px rgba(44, 64, 92, 0.04);
  backdrop-filter: blur(16px);
}

.brand,
.nav-links,
.hero-actions,
.hero-tags,
.download-actions,
.download-meta {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.nav-links {
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover,
.header-download:hover {
  color: var(--accent);
}

.header-download {
  padding: 10px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #e7f2ff, #c9e0ff);
  color: #0b5ed7;
  font-weight: 700;
  box-shadow: 0 12px 30px rgba(22, 119, 255, 0.14);
}

.hero-section,
.section {
  width: min(1180px, calc(100vw - 48px));
  margin: 0 auto;
}

.hero-section {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  padding: 76px 0 54px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.eyebrow,
.section-head p,
.download-box p {
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-content h1,
.section-head h2,
.download-box h2 {
  margin: 0;
  line-height: 1.08;
}

.hero-content h1 {
  font-size: clamp(42px, 6vw, 74px);
  letter-spacing: -0.04em;
}

.headline {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.2;
  font-weight: 700;
}

.summary,
.section-head span,
.scenario-panel p,
.download-box span {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.hero-tags {
  flex-wrap: wrap;
  gap: 12px;
}

.hero-tags span,
.scenario-tags span,
.download-meta span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(23, 32, 51, 0.06);
}

.hero-actions,
.download-actions {
  gap: 16px;
  flex-wrap: wrap;
}

.download-action,
.download-card {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
}

.download-action {
  min-width: 144px;
  padding: 14px 24px;
  border-radius: 16px;
  background: linear-gradient(135deg, #2584ff, #1268e8);
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 18px 34px rgba(22, 119, 255, 0.24);
}

.download-action[aria-disabled="true"] {
  background: rgba(23, 32, 51, 0.08);
  color: rgba(23, 32, 51, 0.42);
  box-shadow: none;
  cursor: not-allowed;
}

.hero-art {
  min-height: 540px;
}

.visual-stage {
  position: relative;
  height: 100%;
  min-height: 540px;
  border-radius: 36px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(241, 248, 255, 0.94)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.66), rgba(255, 255, 255, 0.78));
  border: 1px solid rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.visual-stage::before,
.visual-stage::after {
  content: "";
  position: absolute;
  inset: auto;
  border-radius: 999px;
  filter: blur(0);
}

.visual-stage::before {
  top: 34px;
  left: 40px;
  width: 220px;
  height: 220px;
  background: rgba(202, 236, 255, 0.76);
}

.visual-stage::after {
  right: 34px;
  bottom: 36px;
  width: 186px;
  height: 186px;
  background: rgba(220, 238, 255, 0.86);
}

.visual-plate,
.visual-ring,
.visual-cube,
.visual-core,
.floating-module,
.visual-note {
  position: absolute;
}

.plate-back,
.plate-front {
  inset: 52px 78px 96px;
  border-radius: 28px;
}

.plate-back {
  background: linear-gradient(145deg, rgba(22, 119, 255, 0.11), rgba(22, 119, 255, 0.05));
  transform: rotate(-5deg);
}

.plate-front {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(246, 251, 255, 0.92));
  border: 1px solid rgba(22, 119, 255, 0.06);
  transform: rotate(4deg);
}

.visual-core {
  inset: 160px auto auto 50%;
  width: 180px;
  height: 180px;
  margin-left: -90px;
  border-radius: 36px;
  background: linear-gradient(145deg, #0f3d73, #1677ff);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  font-weight: 800;
  letter-spacing: 0.04em;
  box-shadow: 0 28px 60px rgba(22, 119, 255, 0.28);
}

.visual-ring {
  border: 1px solid rgba(22, 119, 255, 0.2);
  border-radius: 999px;
}

.ring-one {
  inset: 112px auto auto 126px;
  width: 290px;
  height: 290px;
}

.ring-two {
  right: 108px;
  bottom: 102px;
  width: 240px;
  height: 240px;
  border-color: rgba(105, 177, 255, 0.26);
}

.visual-cube {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  transform: rotate(18deg);
}

.cube-one {
  top: 132px;
  right: 132px;
  background: var(--hero-orange);
}

.cube-two {
  bottom: 148px;
  left: 120px;
  background: var(--hero-green);
}

.floating-module {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 230px;
  padding: 14px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 36px rgba(24, 44, 80, 0.08);
}

.floating-module span {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.floating-module strong,
.download-card b {
  display: block;
  font-size: 16px;
}

.floating-module small,
.download-card small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.floating-module--image {
  top: 84px;
  left: 56px;
}

.floating-module--image span {
  background: rgba(202, 236, 255, 0.9);
  color: #005f8a;
}

.floating-module--video {
  top: 102px;
  right: 40px;
}

.floating-module--video span {
  background: rgba(232, 243, 255, 0.94);
  color: #0b5ed7;
}

.floating-module--translate {
  bottom: 118px;
  left: 44px;
}

.floating-module--translate span {
  background: rgba(224, 242, 254, 0.96);
  color: #0f6ea8;
}

.floating-module--flow {
  right: 44px;
  bottom: 88px;
}

.floating-module--flow span {
  background: rgba(219, 234, 254, 0.94);
  color: #1d4ed8;
}

.visual-note {
  left: 50%;
  bottom: 44px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(17, 35, 61, 0.88);
  color: rgba(255, 255, 255, 0.92);
  text-align: center;
}

.section {
  padding: 52px 0;
}

.muted-section {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0));
  border-radius: 28px;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 760px;
}

.section-head.compact {
  max-width: 620px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.overview-card,
.capability-grid article,
.download-box,
.scenario-panel {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(23, 32, 51, 0.06);
  box-shadow: var(--shadow-soft);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.overview-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 24px 22px;
  border-radius: 24px;
}

.overview-card > span {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(22, 119, 255, 0.08);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.overview-card h3 {
  margin: 0 0 10px;
  color: #172033;
  font-size: 19px;
}

.overview-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.capability-grid article {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  padding: 22px;
  border-radius: 24px;
}

.capability-grid article > span {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(22, 119, 255, 0.08);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.capability-grid h3,
.scenario-layout h2 {
  margin: 0 0 10px;
}

.capability-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.workflow-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.workflow-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 24px 22px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(23, 32, 51, 0.06);
  box-shadow: var(--shadow-soft);
}

.workflow-list span {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, #2584ff, #1268e8);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.workflow-list div {
  min-width: 0;
}

.workflow-list strong {
  display: block;
  color: #172033;
  font-size: 18px;
}

.workflow-list small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.6;
}

.scenario-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
  align-items: start;
}

.scenario-panel {
  border-radius: 28px;
  padding: 28px;
}

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.download-section {
  padding-bottom: 80px;
}

.download-box {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 30px;
  border-radius: 30px;
}

.download-card {
  flex: 1 1 280px;
  align-items: flex-start;
  justify-content: flex-start;
  flex-direction: column;
  gap: 8px;
  min-height: 112px;
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(238, 246, 255, 0.95));
  border: 1px solid rgba(22, 119, 255, 0.14);
  box-shadow: 0 14px 34px rgba(22, 119, 255, 0.12);
}

.download-card[aria-disabled="true"] {
  background: rgba(23, 32, 51, 0.05);
  border-color: rgba(23, 32, 51, 0.06);
  box-shadow: none;
  cursor: not-allowed;
}

.download-meta {
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 1080px) {
  .hero-section,
  .section {
    width: min(100vw - 32px, 980px);
  }

  .hero-section,
  .scenario-layout,
  .overview-grid,
  .capability-grid,
  .workflow-list {
    grid-template-columns: 1fr;
  }

  .hero-art {
    min-height: 460px;
  }

  .visual-stage {
    min-height: 460px;
  }
}

@media (max-width: 760px) {
  .site-header {
    height: auto;
    padding: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .hero-section {
    width: min(100vw - 24px, 720px);
    padding-top: 36px;
  }

  .hero-content h1 {
    font-size: 42px;
  }

  .headline {
    font-size: 24px;
  }

  .summary,
  .section-head span,
  .scenario-panel p,
  .download-box span {
    font-size: 15px;
  }

  .workflow-list li {
    align-items: flex-start;
  }

  .visual-stage {
    min-height: 520px;
  }

  .plate-back,
  .plate-front {
    inset: 52px 24px 128px;
  }

  .visual-core {
    top: 176px;
    width: 150px;
    height: 150px;
    margin-left: -75px;
    font-size: 52px;
  }

  .floating-module {
    width: 200px;
  }

  .floating-module--image {
    top: 72px;
    left: 20px;
  }

  .floating-module--video {
    top: 92px;
    right: 16px;
  }

  .floating-module--translate {
    bottom: 126px;
    left: 18px;
  }

  .floating-module--flow {
    right: 16px;
    bottom: 100px;
  }

  .download-box {
    padding: 22px;
  }
}