:root {
  --bg: #08111f;
  --bg-soft: #0d1b2f;
  --panel: rgba(255, 255, 255, 0.075);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --text: #f5f8ff;
  --muted: #9fb0c9;
  --line: rgba(255, 255, 255, 0.15);
  --accent: #70e1d4;
  --accent-2: #9b8cff;
  --warm: #f6c36a;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(112, 225, 212, 0.2), transparent 34rem),
    radial-gradient(circle at top right, rgba(155, 140, 255, 0.22), transparent 30rem),
    linear-gradient(180deg, #08111f 0%, #0a1322 42%, #050914 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--line);
  background: rgba(8, 17, 31, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  border-radius: 0.8rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07101d;
  font-weight: 900;
}

.nav {
  display: flex;
  gap: 0.8rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.nav a {
  text-decoration: none;
}

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

.language-switcher {
  display: inline-flex;
  padding: 0.22rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
}

.language-switcher button {
  border: 0;
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
}

.language-switcher button.active {
  background: var(--text);
  color: #08111f;
}

.section-shell {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5.5rem 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.72fr);
  gap: 4rem;
  align-items: center;
  min-height: calc(100vh - 5rem);
}

.eyebrow,
.section-number {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 18ch;
  margin-bottom: 1.6rem;
  font-size: clamp(2.45rem, 4.45vw, 4.55rem);
  line-height: 1.04;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 1.15rem;
  font-size: clamp(1.9rem, 3.1vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 0.6rem;
  font-size: 1.2rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.hero-text,
.section-heading p,
.case-study p,
.contact p {
  max-width: 46rem;
  color: var(--muted);
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.1rem;
  border-radius: 999px;
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  background: var(--text);
  color: #07101d;
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--text);
}

.hero-panel {
  position: relative;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 2rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.045));
  box-shadow: var(--shadow);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 1rem;
  border-radius: 1.4rem;
  background: linear-gradient(135deg, rgba(112, 225, 212, 0.16), rgba(155, 140, 255, 0.14));
  filter: blur(28px);
  z-index: -1;
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.metric-card {
  min-height: 7.6rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background: rgba(4, 9, 18, 0.5);
}

.metric-card.large {
  min-height: 9.5rem;
  background: linear-gradient(135deg, rgba(112, 225, 212, 0.22), rgba(155, 140, 255, 0.12));
}

.metric-card span,
.contact-card span,
.card span,
.service-index,
.case-results span {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-card strong {
  display: block;
  margin-top: 1rem;
  font-size: clamp(1.35rem, 3vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.metric-card strong br {
  display: none;
}

html[lang="zh-Hant"] .metric-card strong br,
html[lang="zh-Hans"] .metric-card strong br {
  display: block;
}

.logo-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  padding-top: 0;
  color: var(--muted);
}

.logo-strip strong {
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.92rem;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(16rem, 0.78fr) minmax(0, 1.22fr);
  gap: 4rem;
}

.cards,
.service-list,
.steps,
.case-results {
  display: grid;
  gap: 1.15rem;
}

.two-col {
  grid-template-columns: 1fr 1fr;
}

.three-col {
  grid-template-columns: repeat(3, 1fr);
}

.card,
.service-card,
.contact-card,
.comparison,
.steps div {
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background: var(--panel);
}

.card {
  padding: 1.45rem;
}

.card p,
.service-card p,
.steps p {
  color: var(--muted);
}

.card.accent {
  background: linear-gradient(180deg, rgba(112, 225, 212, 0.12), rgba(255, 255, 255, 0.055));
}

.section-heading {
  margin-bottom: 2rem;
}

.section-heading.compact {
  max-width: none;
}

.service-list {
  grid-template-columns: repeat(4, 1fr);
  align-items: start;
}

.ai-section h2 {
  font-size: clamp(1.9rem, 2.6vw, 2.85rem);
}

.service-card {
  padding: 1.45rem;
}

.service-card p {
  margin-bottom: 0;
}

.case-study {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.case-results {
  grid-template-columns: 1fr 1fr;
}

.case-results div {
  min-height: 10rem;
  padding: 1.2rem;
  border-radius: 1.4rem;
  background: linear-gradient(135deg, rgba(246, 195, 106, 0.17), rgba(255, 255, 255, 0.055));
  border: 1px solid var(--line);
}

.case-results strong {
  display: block;
  margin-bottom: 1rem;
  font-size: clamp(1.9rem, 3.8vw, 3.25rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.comparison {
  overflow: hidden;
}

.comparison-row {
  display: grid;
  grid-template-columns: 0.7fr 1fr 1fr;
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

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

.comparison-row.header {
  background: var(--panel-strong);
  color: var(--text);
  font-weight: 800;
}

.comparison-row span:nth-child(2) {
  color: var(--text);
}

.engagement {
  text-align: left;
}

.engagement h2 {
  max-width: none;
}

.steps {
  grid-template-columns: repeat(4, 1fr);
  margin-top: 2.4rem;
  text-align: left;
}

.steps div {
  padding: 1.3rem;
}

.steps span {
  color: var(--accent);
  font-weight: 900;
}

.steps strong {
  display: block;
  margin: 1.7rem 0 0.55rem;
  font-size: 1.1rem;
}

.contact {
  display: grid;
  grid-template-columns: 1fr minmax(18rem, 0.78fr);
  gap: 4rem;
  align-items: start;
}

.contact-card {
  padding: 1.4rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.055));
}

.contact-card strong,
.contact-card a,
.contact-card p {
  display: block;
  margin: 0.35rem 0 1.2rem;
}

.contact-card a {
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem clamp(1rem, 4vw, 4rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--text);
  text-decoration: none;
}

@media (max-width: 980px) {
  .site-header {
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.2rem;
  }

  .hero,
  .section-grid,
  .case-study,
  .contact {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: 16ch;
  }

  .service-list,
  .steps,
  .three-col {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .section-shell {
    width: min(100% - 1rem, 1160px);
    padding: 3.5rem 0;
  }

  .site-header {
    padding: 0.8rem;
  }

  .brand span:last-child {
    max-width: 11rem;
  }

  .hero {
    min-height: auto;
    padding-top: 3rem;
  }

  h1 {
    font-size: clamp(2.2rem, 10.5vw, 3.2rem);
  }

  .two-col,
  .three-col,
  .service-list,
  .steps,
  .case-results,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .comparison-row {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}