:root {
  --bg: #f5f5f7;
  --bg-strong: #ebebef;
  --text: #111114;
  --muted: #5f6168;
  --line: rgba(17, 17, 20, 0.1);
  --card: rgba(255, 255, 255, 0.72);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --accent: #0a84ff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.92), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 45%, #ececef 100%);
  color: var(--text);
  letter-spacing: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(20px, 4vw, 44px);
  background: rgba(245, 245, 247, 0.72);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid transparent;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.site-header[data-elevated="true"] {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: 0;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  filter: grayscale(1) contrast(1.2);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
}

.nav-links {
  display: flex;
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.nav-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.nav-cta,
.primary-button {
  background: var(--text);
  color: #fff;
}

.secondary-button {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.56);
}

.nav-cta:hover,
.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

main {
  overflow: clip;
}

.hero,
.section-band,
.solutions,
.showcase,
.method,
.industries,
.contact {
  padding-left: clamp(20px, 4vw, 44px);
  padding-right: clamp(20px, 4vw, 44px);
}

.hero {
  position: relative;
  min-height: calc(100vh - 76px);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
  padding-top: clamp(36px, 6vw, 72px);
  padding-bottom: clamp(36px, 6vw, 72px);
}

.hero-media {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  pointer-events: none;
  overflow: hidden;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 38%, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.1) 30%, transparent 58%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.72));
}

.hero-media img {
  position: absolute;
  inset: 50% auto auto 50%;
  width: min(78vw, 900px);
  transform: translate(-50%, -50%);
  filter: grayscale(1) contrast(0.9) drop-shadow(0 30px 80px rgba(0, 0, 0, 0.16));
}

.hero-copy,
.hero-stats,
.section-heading,
.showcase-copy,
.contact-panel {
  position: relative;
  z-index: 1;
}

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

.hero h1 {
  margin: 0;
  font-size: 6.4rem;
  line-height: 0.94;
  letter-spacing: 0;
  max-width: 9ch;
}

.hero-lede,
.hero-slogan,
.showcase-copy p,
.contact-panel p,
.feature-card p,
.timeline-item p,
.industry-card p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.hero-lede {
  max-width: 38rem;
  margin: 22px 0 0;
}

.hero-slogan {
  margin: 18px 0 0;
  color: var(--text);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.25;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-stats {
  align-self: end;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.hero-stats div {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.56);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero-stats strong {
  display: block;
  font-size: 34px;
  line-height: 1;
}

.hero-stats span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

.section-band {
  margin: 0;
}

.section-inner {
  padding: clamp(28px, 5vw, 56px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-inner h2,
.section-heading h2,
.showcase-copy h2,
.contact-panel h2 {
  margin: 0;
  font-size: 3.8rem;
  line-height: 1.05;
  letter-spacing: 0;
  max-width: 14ch;
}

.section-inner h2 {
  max-width: 16ch;
}

.solutions,
.method,
.industries {
  padding-top: clamp(68px, 10vw, 120px);
  padding-bottom: clamp(68px, 10vw, 120px);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.section-heading p {
  margin: 0;
}

.solution-grid,
.industry-grid {
  display: grid;
  gap: 16px;
}

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

.feature-card,
.industry-card,
.timeline-item,
.system-panel,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.feature-card,
.industry-card,
.timeline-item {
  padding: 26px;
}

.feature-card span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.feature-card h3,
.timeline-item h3,
.industry-card h3 {
  margin: 0 0 10px;
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: 0;
}

.showcase {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(320px, 1.06fr);
  gap: 20px;
  align-items: center;
  padding-top: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(24px, 4vw, 44px);
}

.system-panel {
  position: relative;
  padding: 30px;
  overflow: hidden;
}

.signal {
  position: absolute;
  inset: auto 30px 30px auto;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(17, 17, 20, 0.08);
  border-radius: 50%;
  opacity: 0.6;
}

.signal:nth-child(2) {
  width: 210px;
  height: 210px;
  inset: auto 66px 66px auto;
}

.signal:nth-child(3) {
  width: 140px;
  height: 140px;
  inset: auto 100px 100px auto;
}

.signal.active {
  border-color: rgba(10, 132, 255, 0.24);
  box-shadow: 0 0 80px rgba(10, 132, 255, 0.12);
}

.flow-row {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  z-index: 1;
}

.flow-row:last-child {
  border-bottom: 0;
}

.flow-row span {
  color: var(--muted);
}

.flow-row strong {
  font-size: 1.1rem;
  letter-spacing: 0;
}

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

.timeline-item span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: 18px;
  background: rgba(17, 17, 20, 0.06);
  font-size: 14px;
  font-weight: 700;
}

.industry-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contact {
  padding-top: 0;
  padding-bottom: clamp(60px, 8vw, 100px);
}

.contact-panel {
  padding: clamp(28px, 5vw, 54px);
  max-width: 980px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.primary-button.light {
  margin-top: 22px;
  background: #fff;
  color: var(--text);
}

.contact-actions .primary-button.light,
.contact-actions .secondary-button.light {
  margin-top: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px clamp(20px, 4vw, 44px) 36px;
  color: var(--muted);
  font-size: 13px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 680ms ease, transform 680ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .hero,
  .showcase,
  .timeline,
  .industry-grid,
  .solution-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 28px;
  }

  .hero-copy {
    padding-top: 280px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .section-heading {
    flex-direction: column;
    align-items: start;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .brand span,
  .nav-cta {
    display: none;
  }

  .hero-copy {
    padding-top: 230px;
  }

  .hero h1 {
    font-size: 4.6rem;
    max-width: 10ch;
  }

  .hero-lede,
  .hero-slogan,
  .showcase-copy p,
  .contact-panel p,
  .feature-card p,
  .timeline-item p,
  .industry-card p {
    font-size: 16px;
  }

  .hero-slogan {
    font-size: 1.35rem;
  }

  .section-inner h2,
  .section-heading h2,
  .showcase-copy h2,
  .contact-panel h2 {
    font-size: 2.35rem;
  }
}