:root {
  --bg: #050a10;
  --panel: rgba(9, 20, 31, 0.86);
  --panel-soft: rgba(255, 255, 255, 0.05);
  --ink: #ecf8ff;
  --ink-strong: #ffffff;
  --ink-soft: #b6c9d8;
  --muted: #7d94a6;
  --line: rgba(127, 207, 255, 0.16);
  --cyan: #21d9ff;
  --blue: #2e7dff;
  --green: #29e69b;
  --amber: #ffb238;
  --red: #ff5367;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(33, 217, 255, 0.07) 0 1px, transparent 1px 100%),
    linear-gradient(180deg, rgba(33, 217, 255, 0.04) 0 1px, transparent 1px 100%),
    linear-gradient(140deg, #050a10 0%, #07111a 42%, #081018 100%);
  background-size: 44px 44px, 44px 44px, auto;
  font-family: "Aptos", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid rgba(33, 217, 255, 0.68);
  outline-offset: 3px;
}

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

.atmos-line {
  position: absolute;
  width: 70vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(33, 217, 255, 0.42), transparent);
  opacity: 0.5;
  transform: rotate(-12deg);
}

.line-a {
  left: -12vw;
  top: 16vh;
}

.line-b {
  right: -14vw;
  bottom: 18vh;
  transform: rotate(14deg);
}

.site-header,
.site-hero,
.story-section,
.flow-section,
.trust-section,
.site-footer,
.doc-page {
  width: min(1180px, calc(100vw - 32px));
  margin-inline: auto;
}

.site-header {
  min-height: 72px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(9, 20, 31, 0.82);
  padding: 12px 14px;
  backdrop-filter: blur(18px);
}

.site-brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.site-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(33, 217, 255, 0.52);
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(33, 217, 255, 0.28), rgba(46, 125, 255, 0.2));
  color: #dffaff;
  box-shadow: inset 0 0 24px rgba(33, 217, 255, 0.22), 0 0 24px rgba(33, 217, 255, 0.12);
}

.site-brand strong,
.site-brand small {
  display: block;
}

.site-brand strong,
.site-footer strong {
  color: var(--ink-strong);
}

.site-brand small,
.site-footer,
.section-copy p,
.hero-narrative p {
  color: var(--muted);
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.site-header nav a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0 12px;
  color: var(--ink-soft);
  font-weight: 760;
}

.site-header nav a:hover {
  border-color: rgba(33, 217, 255, 0.26);
  background: rgba(33, 217, 255, 0.08);
}

.site-hero {
  min-height: calc(100vh - 112px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 0.78fr);
  gap: 28px;
  align-items: center;
  padding: 54px 0 72px;
}

.hero-narrative {
  display: grid;
  gap: 20px;
}

.site-label {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
}

.hero-narrative h1,
.section-copy h2,
.flow-section h2,
.doc-page h1 {
  margin: 0;
  color: var(--ink-strong);
  line-height: 1.03;
  text-wrap: balance;
}

.hero-narrative h1 {
  max-width: 760px;
  font-size: 66px;
}

.hero-narrative p {
  max-width: 68ch;
  margin: 0;
  font-size: 18px;
  line-height: 1.78;
}

.site-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.primary-action,
.secondary-action {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid rgba(33, 217, 255, 0.24);
  border-radius: var(--radius);
  padding: 0 16px;
  font-weight: 850;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.primary-action {
  border-color: rgba(33, 217, 255, 0.54);
  background: linear-gradient(135deg, rgba(33, 217, 255, 0.32), rgba(46, 125, 255, 0.28));
  color: var(--ink-strong);
}

.secondary-action {
  background: rgba(255, 255, 255, 0.045);
  color: var(--ink);
}

.primary-action:hover,
.secondary-action:hover {
  transform: translateY(-1px);
  border-color: rgba(33, 217, 255, 0.56);
}

.product-command {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  border: 1px solid rgba(33, 217, 255, 0.2);
  border-radius: var(--radius);
  background: #06111d;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
}

.product-command img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.08);
  animation: image-float 5.5s ease-in-out infinite;
}

.command-overlay {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  border: 1px solid rgba(127, 207, 255, 0.18);
  border-radius: var(--radius);
  background: rgba(3, 12, 18, 0.72);
  padding: 12px 14px;
  backdrop-filter: blur(12px);
}

.command-overlay span {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--ink-soft);
}

.command-overlay strong {
  color: var(--green);
  font-size: 26px;
}

.story-section,
.flow-section,
.trust-section,
.doc-page {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 34px;
  margin-bottom: 16px;
  backdrop-filter: blur(18px);
}

.section-copy {
  display: grid;
  gap: 12px;
}

.section-copy h2,
.flow-section h2,
.doc-page h1 {
  max-width: 820px;
  font-size: 40px;
}

.section-copy p {
  max-width: 72ch;
  line-height: 1.75;
}

.story-board,
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.story-board article,
.trust-grid div,
.flow-list li {
  border: 1px solid rgba(127, 207, 255, 0.13);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  padding: 16px;
}

.story-board i {
  color: var(--cyan);
}

.story-board strong,
.story-board span,
.trust-grid span,
.trust-grid strong {
  display: block;
}

.story-board strong {
  margin-top: 14px;
}

.story-board span,
.trust-grid span,
.flow-list span {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.6;
}

.flow-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(340px, 1fr);
  gap: 24px;
}

.flow-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.flow-list li {
  display: grid;
  grid-template-columns: minmax(100px, 150px) minmax(0, 1fr);
  gap: 12px;
}

.trust-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.trust-grid strong {
  margin-top: 6px;
  color: var(--ink-strong);
  font-size: 22px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-block: 20px 28px;
  font-size: 13px;
  font-weight: 760;
}

.doc-page {
  margin-top: 34px;
  min-height: calc(100vh - 190px);
}

.doc-page p {
  color: var(--ink-soft);
  line-height: 1.75;
}

.reveal {
  animation: rise 360ms ease both;
}

@keyframes rise {
  from {
    opacity: 0.01;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes image-float {
  0%, 100% {
    transform: scale(1.02) translateY(0);
  }
  50% {
    transform: scale(1.05) translateY(-4px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 920px) {
  .site-hero,
  .flow-section {
    grid-template-columns: 1fr;
  }

  .hero-narrative h1 {
    font-size: 50px;
  }

  .story-board,
  .trust-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-hero {
    min-height: auto;
    padding: 34px 0 42px;
  }

  .hero-narrative h1 {
    font-size: 34px;
    line-height: 1.08;
  }

  .section-copy h2,
  .flow-section h2,
  .doc-page h1 {
    font-size: 30px;
  }

  .story-section,
  .flow-section,
  .trust-section,
  .doc-page {
    padding: 22px;
  }

  .product-command,
  .product-command img {
    min-height: 360px;
  }

  .flow-list li {
    grid-template-columns: 1fr;
  }
}