:root {
  --ink: #111111;
  --muted: #6e6e73;
  --paper: #f5f5f7;
  --panel: rgba(255, 255, 255, 0.78);
  --panel-solid: #ffffff;
  --line: rgba(0, 0, 0, 0.1);
  --line-strong: rgba(0, 0, 0, 0.18);
  --accent: #0071e3;
  --accent-two: #00a887;
  --signal: #ff5a3d;
  --deep: #060607;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.12);
  --soft-shadow: 0 18px 48px rgba(0, 0, 0, 0.08);
  --progress: 0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #ffffff 0%, #f5f5f7 34%, #ffffff 68%, #f5f5f7 100%);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::selection {
  color: #ffffff;
  background: var(--accent);
}

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

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  top: 14px;
  left: 50%;
  z-index: 40;
  display: flex;
  width: min(1120px, calc(100% - 28px));
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 18px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(20, 20, 22, 0.56);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  backdrop-filter: blur(28px) saturate(180%);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.24);
  transform: translateX(-50%);
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease, color 220ms ease;
}

.site-header.is-scrolled {
  color: rgba(17, 17, 17, 0.9);
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.12);
}

.page-progress {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 7px;
  height: 2px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.page-progress::after {
  content: "";
  display: block;
  width: calc(var(--progress) * 100%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-two), var(--signal));
}

.brand {
  display: inline-flex;
  min-width: max-content;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
}

.brand-mark {
  position: relative;
  width: 24px;
  height: 24px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.brand-mark::before {
  width: 11px;
  height: 1.5px;
  top: 10px;
  left: 6px;
  transform: rotate(-35deg);
  transform-origin: left center;
}

.brand-mark::after {
  width: 6px;
  height: 6px;
  right: 2px;
  bottom: 3px;
  border-radius: 50%;
  background: var(--signal);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.site-nav a {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 600;
  opacity: 0.86;
  transition: background 180ms ease, color 180ms ease, opacity 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  opacity: 1;
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

.site-header.is-scrolled .site-nav {
  background: rgba(0, 0, 0, 0.04);
}

.site-header.is-scrolled .site-nav a:hover,
.site-header.is-scrolled .site-nav a.is-active {
  background: rgba(0, 113, 227, 0.1);
  color: var(--accent);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #ffffff;
  background: #060607;
  isolation: isolate;
}

#robotScene,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-shade {
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0.5) 44%, rgba(0, 0, 0, 0.08) 74%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.16), rgba(0, 0, 0, 0.86));
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(780px, calc(100% - 40px));
  margin-left: clamp(20px, 8vw, 118px);
  padding-top: 84px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: rgba(255, 255, 255, 0.7);
}

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

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(58px, 10vw, 136px);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  max-width: 860px;
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 66px);
  font-weight: 760;
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.22;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 650px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.62;
}

.hero-signal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
}

.hero-signal span {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 0 14px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
  font-size: 13px;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.primary-action,
.secondary-action,
.contact-form button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 0;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
}

.primary-action,
.contact-form button {
  color: #ffffff;
  background: var(--accent);
  box-shadow: 0 12px 34px rgba(0, 113, 227, 0.34);
}

.secondary-action {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(18px);
}

.primary-action:hover,
.secondary-action:hover,
.contact-form button:hover {
  transform: translateY(-2px) scale(1.02);
}

.hero-readout {
  position: absolute;
  right: clamp(20px, 6vw, 78px);
  bottom: clamp(28px, 6vw, 78px);
  z-index: 2;
  display: grid;
  min-width: 250px;
  gap: 6px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  padding: 18px;
  color: rgba(255, 255, 255, 0.82);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(26px) saturate(170%);
  box-shadow: 0 18px 68px rgba(0, 0, 0, 0.34);
  transform: translate3d(calc(var(--tilt-x, 0) * -10px), calc(var(--tilt-y, 0) * -10px), 0);
}

.hero-readout strong {
  color: #ffffff;
  font-size: 16px;
}

.readout-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #34c759;
  box-shadow: 0 0 0 7px rgba(52, 199, 89, 0.18);
}

.metrics-section {
  padding: 28px clamp(20px, 5vw, 72px) 0;
  background: #ffffff;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  max-width: 1180px;
  margin: 0 auto;
}

.metric-card {
  min-height: 142px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--soft-shadow);
  transform: translateZ(0);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.metric-card:hover {
  border-color: rgba(0, 113, 227, 0.28);
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}

.metric-card strong {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1;
}

.metric-card span {
  color: var(--muted);
  font-size: 14px;
}

.section,
.contact-section {
  padding: clamp(72px, 10vw, 132px) clamp(20px, 5vw, 72px);
}

.section {
  max-width: 1320px;
  margin: 0 auto;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 42px;
}

.section-copy {
  max-width: 620px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.72;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  perspective: 1200px;
}

.capability-card,
.process-track article,
.contact-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--soft-shadow);
  backdrop-filter: blur(22px) saturate(160%);
}

.capability-card,
.process-track article,
.solution-item {
  transform: rotateX(calc(var(--rotate-x, 0) * 1deg)) rotateY(calc(var(--rotate-y, 0) * 1deg)) translateY(var(--lift, 0));
  transform-style: preserve-3d;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.capability-card {
  position: relative;
  min-height: 334px;
  overflow: hidden;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.capability-card::after,
.process-track article::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.5), rgba(0, 113, 227, 0.1), rgba(255, 90, 61, 0.08));
  transition: opacity 180ms ease;
  pointer-events: none;
}

.capability-card:hover,
.process-track article:hover,
.solution-item:hover {
  --lift: -8px;
  border-color: rgba(0, 113, 227, 0.26);
  box-shadow: var(--shadow);
}

.capability-card:hover::after,
.process-track article:hover::after {
  opacity: 1;
}

.capability-visual {
  position: relative;
  display: grid;
  width: 100%;
  height: 122px;
  grid-template-columns: 1fr 1.4fr 0.8fr;
  align-items: end;
  gap: 12px;
  transform: translateZ(28px);
}

.capability-visual span {
  display: block;
  border-radius: 8px;
  background: linear-gradient(180deg, #6fd6ff, var(--accent));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.capability-visual span:nth-child(1) {
  height: 44px;
}

.capability-visual span:nth-child(2) {
  height: 96px;
  background: linear-gradient(180deg, #34c759, var(--accent-two));
}

.capability-visual span:nth-child(3) {
  height: 66px;
  background: linear-gradient(180deg, #ff9f0a, var(--signal));
}

.capability-card p,
.process-track p {
  position: relative;
  z-index: 1;
  color: var(--muted);
  line-height: 1.68;
}

.capability-card h3 {
  position: relative;
  z-index: 1;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 1fr);
  gap: clamp(30px, 6vw, 90px);
  align-items: start;
  max-width: none;
  margin: 0;
  background: #111111;
  color: #ffffff;
}

.split-section > * {
  max-width: 1180px;
}

.split-section .eyebrow {
  color: #8fd8ff;
}

.split-section .section-copy {
  color: rgba(255, 255, 255, 0.66);
}

.solution-list {
  display: grid;
  gap: 12px;
}

.solution-item {
  position: relative;
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(22px);
}

.solution-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--accent-two), var(--signal));
}

.solution-item strong,
.solution-item span {
  position: relative;
  z-index: 1;
}

.solution-item span {
  color: #8fd8ff;
  font-weight: 800;
}

.process-track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  perspective: 1200px;
}

.process-track article {
  position: relative;
  min-height: 250px;
  overflow: hidden;
  padding: 30px;
}

.process-track span {
  position: relative;
  z-index: 1;
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  margin-bottom: 44px;
  border-radius: 50%;
  color: #ffffff;
  background: var(--ink);
  font-weight: 800;
}

.process-track h3 {
  position: relative;
  z-index: 1;
}

.contact-section {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(320px, 520px);
  gap: clamp(30px, 6vw, 90px);
  align-items: center;
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(0, 113, 227, 0.22), transparent 32%),
    linear-gradient(225deg, rgba(255, 90, 61, 0.18), transparent 30%),
    #060607;
}

.contact-section > div {
  max-width: 700px;
}

.contact-section p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.72;
}

.contact-section .eyebrow {
  color: #8fd8ff;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
}

.contact-form label {
  display: grid;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 14px 16px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: inset 0 0 0 1px var(--line);
  outline: none;
  transition: box-shadow 180ms ease, background 180ms ease, transform 180ms ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  background: #ffffff;
  box-shadow: inset 0 0 0 2px var(--accent), 0 0 0 5px rgba(0, 113, 227, 0.12);
  transform: translateY(-1px);
}

.contact-form textarea {
  resize: vertical;
}

.contact-form button {
  width: 100%;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--muted) !important;
  font-size: 14px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 26px clamp(20px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.64);
  background: #060607;
  font-size: 13px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 680ms ease, transform 680ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 980px) {
  .site-header {
    top: 10px;
    width: min(720px, calc(100% - 20px));
    border-radius: 8px;
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 14px 16px;
  }

  .page-progress {
    bottom: 7px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero-content {
    padding-top: 140px;
  }

  .hero-readout {
    display: none;
  }

  .metrics-grid,
  .capability-grid,
  .process-track,
  .split-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 560px) {
  .site-header {
    color: rgba(255, 255, 255, 0.94);
  }

  .site-nav a {
    padding: 0 10px;
  }

  .hero {
    min-height: 94vh;
  }

  .hero-content {
    width: min(100% - 32px, 560px);
    margin-left: 16px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .capability-card,
  .process-track article,
  .contact-form {
    border-radius: 8px;
  }
}