:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #5b6475;
  --line: #dbe3ef;
  --accent: #2563eb;
  --accent-2: #0f766e;
  --soft: #e8f0ff;
  --alt: #eef3f9;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, #ffffff 0%, #f6f9fc 100%);
}

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

.wrap {
  width: min(1120px, calc(100vw - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(219, 227, 239, 0.9);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #60a5fa);
  color: white;
  font-weight: 900;
  letter-spacing: 0;
}

.brand-name {
  font-weight: 800;
}

.brand-sub,
.nav {
  color: var(--muted);
  font-size: 14px;
}

.nav {
  display: flex;
  gap: 20px;
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 28px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.service,
.case,
.quote,
.contact-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 48px;
  border-radius: 18px;
}

.hero-panel {
  padding: 36px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, #0f172a 0%, #162033 100%);
  color: #eef4ff;
}

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

.hero h1,
.section h2,
.contact-card h2 {
  margin: 0;
  line-height: 1.15;
  letter-spacing: 0;
}

.hero h1 {
  font-size: clamp(36px, 5vw, 60px);
  max-width: 12ch;
}

.lead {
  margin: 20px 0 0;
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
}

.lead.small {
  font-size: 16px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
}

.btn.primary {
  background: var(--accent);
  color: white;
}

.btn.ghost {
  border-color: var(--line);
  background: white;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 30px 0 0;
}

.stats dt,
.contact-grid span {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 8px;
}

.stats dd,
.contact-grid strong {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
}

.hero-panel ul {
  margin: 18px 0 0;
  padding-left: 18px;
  line-height: 1.9;
}

.section {
  padding: 52px 0;
}

.section.alt {
  background: var(--alt);
}

.section h2 {
  font-size: clamp(26px, 3vw, 40px);
  max-width: 16ch;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.service,
.case {
  border-radius: 16px;
  padding: 26px;
}

.service h3,
.case h3,
.timeline h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.service p,
.case p,
.timeline p,
.quote p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.case-band {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr 0.9fr;
  gap: 16px;
  margin-top: 24px;
}

.commercial-band {
  grid-template-columns: 1.35fr 0.85fr 0.85fr;
}

.case-hero {
  background: linear-gradient(180deg, #0f172a 0%, #172238 100%);
  color: #eef4ff;
}

.case-hero .kpi {
  margin: 0 0 12px;
  color: #7dd3fc;
  font-size: 18px;
  font-weight: 800;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.evidence {
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.evidence h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.evidence-tag {
  margin: 0 0 12px;
  color: var(--accent-2);
  font-weight: 700;
  font-size: 12px;
}

.industrial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.industrial-card {
  padding: 26px;
  border-radius: 16px;
  background: white;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.industrial-card h3 {
  margin: 0 0 12px;
  font-size: 18px;
}

.industrial-tag {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 800;
  font-size: 12px;
}

.process-note {
  margin-top: 16px;
  padding: 18px 22px;
  border-left: 4px solid var(--accent);
  background: #f8fbff;
  color: var(--muted);
  border-radius: 0 14px 14px 0;
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 14px;
}

.timeline li {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 18px;
  align-items: start;
  background: white;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
}

.timeline span {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--soft);
  color: var(--accent);
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: center;
}

.quote {
  border-radius: 18px;
  padding: 28px;
}

.contact-card {
  border-radius: 20px;
  padding: 36px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.contact-grid > div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fbfdff;
}

@media (max-width: 960px) {
  .hero-grid,
  .service-grid,
  .case-band,
  .split,
  .evidence-grid,
  .industrial-grid,
  .commercial-band {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .wrap {
    width: min(100vw - 24px, 1120px);
  }

  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero {
    padding-top: 28px;
  }

  .hero-copy,
  .hero-panel,
  .contact-card {
    padding: 24px;
  }

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