:root {
  --bg: #f5f7fb;
  --text: #071526;
  --muted: #5e6a7d;
  --line: rgba(7, 21, 38, 0.1);
  --glass: rgba(255, 255, 255, 0.72);
  --white: #ffffff;
  --blue: #0e51a0;
  --deep-blue: #0e2e60;
  --cyan: #0391b9;
  --silver: #e8edf5;
  --shadow: 0 26px 80px rgba(14, 46, 96, 0.16);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at 15% 0%, rgba(3, 145, 185, 0.18), transparent 30%), var(--bg);
  color: var(--text);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.page-glow {
  position: fixed;
  inset: -20vh -10vw auto auto;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(14,81,160,.18), transparent 58%);
  pointer-events: none;
  z-index: -1;
}

.site-header {
  position: sticky;
  top: 14px;
  z-index: 20;
  width: min(var(--max), calc(100% - 32px));
  margin: 14px auto 0;
  height: 58px;
  padding: 0 12px 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(255,255,255,.68);
  background: rgba(255,255,255,.68);
  backdrop-filter: blur(24px) saturate(150%);
  border-radius: 999px;
  box-shadow: 0 16px 50px rgba(14,46,96,.12);
}
.brand img { height: 32px; width: auto; }
.nav { display: flex; gap: 26px; font-size: 14px; color: rgba(7,21,38,.72); }
.nav a:hover { color: var(--blue); }
.nav-cta {
  padding: 11px 18px;
  border-radius: 999px;
  background: #111827;
  color: white;
  font-size: 14px;
  box-shadow: 0 10px 28px rgba(7,21,38,.18);
}

.section-shell {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}
.hero {
  min-height: 760px;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: 56px;
  padding: 90px 0 56px;
}
.eyebrow {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--blue);
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 22px;
  font-size: clamp(48px, 7vw, 86px);
  line-height: .98;
  letter-spacing: -0.065em;
  font-weight: 750;
}
.hero-subtitle {
  max-width: 650px;
  color: var(--muted);
  font-size: 21px;
  line-height: 1.7;
  letter-spacing: -0.02em;
}
.hero-actions, .cta-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.button.primary { background: linear-gradient(135deg, var(--blue), var(--cyan)); color: white; box-shadow: 0 18px 42px rgba(14,81,160,.26); }
.button.secondary { background: rgba(255,255,255,.72); border: 1px solid rgba(14,46,96,.12); color: var(--deep-blue); }
.button.light.primary { background: white; color: var(--blue); }
.button.light.secondary { border-color: rgba(255,255,255,.42); color: white; background: rgba(255,255,255,.12); }

.hero-visual { position: relative; min-height: 520px; }
.orb { position: absolute; border-radius: 50%; filter: blur(2px); }
.orb-blue { width: 360px; height: 360px; background: linear-gradient(135deg, rgba(14,81,160,.48), rgba(3,145,185,.16)); right: 12%; top: 0; }
.orb-cyan { width: 220px; height: 220px; background: rgba(3,145,185,.22); left: 0; bottom: 42px; }
.device-card {
  position: absolute;
  inset: 70px 0 auto auto;
  width: min(520px, 100%);
  min-height: 430px;
  padding: 30px;
  border-radius: 40px;
  background: linear-gradient(160deg, rgba(255,255,255,.9), rgba(255,255,255,.52));
  border: 1px solid rgba(255,255,255,.74);
  box-shadow: var(--shadow);
  backdrop-filter: blur(28px);
}
.card-topline { display: flex; gap: 8px; margin-bottom: 42px; }
.card-topline span { width: 11px; height: 11px; border-radius: 50%; background: rgba(14,46,96,.2); }
.device-card h2 { font-size: 34px; letter-spacing: -0.04em; line-height: 1.08; margin-bottom: 28px; }
.loop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.loop-grid div {
  min-height: 116px;
  padding: 18px;
  border-radius: 22px;
  background: rgba(245,247,251,.82);
  border: 1px solid rgba(14,46,96,.08);
}
.loop-grid strong { display: block; margin-bottom: 10px; color: var(--deep-blue); }
.loop-grid small { color: var(--muted); line-height: 1.5; }

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: -36px;
  margin-bottom: 112px;
}
.metric-band div {
  padding: 28px 26px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.76);
  border: 1px solid rgba(255,255,255,.72);
  box-shadow: 0 18px 50px rgba(14,46,96,.08);
}
.metric-band strong { display: block; font-size: 38px; letter-spacing: -0.05em; color: var(--deep-blue); }
.metric-band span { color: var(--muted); font-size: 14px; }

.section-heading { max-width: 760px; margin-bottom: 42px; }
.section-heading.center { margin-inline: auto; text-align: center; }
.section-heading h2, .case-copy h2, .team-copy h2, .cta-section h2 {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.055em;
  margin-bottom: 18px;
}
.section-heading p:not(.eyebrow), .case-copy p, .team-copy p, .cta-section p { color: var(--muted); font-size: 18px; line-height: 1.75; }

.split-section, .pain-section, .solution-section, .capabilities-section, .case-section, .company-section, .history-section, .team-section, .cta-section { padding: 96px 0; }
.stage-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stage-timeline article, .glass-card, .capability-card, .trust-card {
  background: var(--glass);
  border: 1px solid rgba(255,255,255,.74);
  box-shadow: 0 20px 60px rgba(14,46,96,.09);
  backdrop-filter: blur(18px);
}
.stage-timeline article { padding: 28px; border-radius: var(--radius-lg); min-height: 220px; }
.stage-timeline article span, .glass-card span { color: var(--cyan); font-weight: 800; }
.stage-timeline h3, .glass-card h3, .capability-card h3 { font-size: 24px; letter-spacing: -0.03em; margin: 18px 0 12px; }
.stage-timeline p, .glass-card p, .capability-card p { color: var(--muted); line-height: 1.7; }
.stage-timeline article.active { background: linear-gradient(145deg, var(--deep-blue), var(--blue)); color: white; }
.stage-timeline article.active span, .stage-timeline article.active p { color: rgba(255,255,255,.8); }

.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.glass-card { padding: 32px; border-radius: var(--radius-xl); min-height: 260px; }

.solution-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: center; }
.foundation { position: relative; height: 560px; border-radius: 44px; background: linear-gradient(145deg, rgba(255,255,255,.84), rgba(232,237,245,.58)); border: 1px solid rgba(255,255,255,.7); box-shadow: var(--shadow); overflow: hidden; }
.foundation::before { content: ""; position: absolute; inset: 52px; border-radius: 50%; border: 1px dashed rgba(14,81,160,.22); }
.foundation::after { content: ""; position: absolute; inset: 122px; border-radius: 50%; border: 1px dashed rgba(3,145,185,.2); }
.foundation-core {
  position: absolute;
  left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 180px; height: 180px; border-radius: 50%;
  display: grid; place-items: center; text-align: center;
  background: linear-gradient(135deg, var(--deep-blue), var(--blue), var(--cyan));
  color: white; font-size: 34px; font-weight: 800; letter-spacing: -0.05em;
  box-shadow: 0 28px 70px rgba(14,81,160,.3); z-index: 2;
}
.foundation-core span { display: block; font-size: 13px; letter-spacing: .04em; font-weight: 600; opacity: .82; }
.foundation-item {
  position: absolute;
  width: 178px;
  padding: 18px;
  border-radius: 22px;
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(255,255,255,.8);
  box-shadow: 0 16px 40px rgba(14,46,96,.11);
  z-index: 3;
}
.foundation-item strong, .foundation-item small { display: block; }
.foundation-item small { margin-top: 7px; color: var(--muted); line-height: 1.45; }
.i1 { left: 42px; top: 72px; } .i2 { right: 42px; top: 80px; } .i3 { right: 58px; bottom: 78px; } .i4 { left: 72px; bottom: 62px; } .i5 { left: 50%; transform: translateX(-50%); top: 24px; }

.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.capability-card { padding: 28px; border-radius: var(--radius-xl); }
.capability-card small { color: var(--cyan); font-weight: 800; }
.capability-card ul { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 10px; color: var(--deep-blue); font-weight: 650; }
.capability-card li::before { content: "•"; color: var(--cyan); margin-right: 8px; }

.case-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 42px; align-items: center; }
.case-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.case-tags span, .team-points span { padding: 10px 14px; border-radius: 999px; background: rgba(14,81,160,.08); color: var(--deep-blue); font-weight: 700; font-size: 14px; }
.case-visual-card { padding: 16px; border-radius: 34px; background: rgba(255,255,255,.78); box-shadow: var(--shadow); }
.case-visual-card img { border-radius: 24px; }

.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.trust-card { padding: 24px; border-radius: var(--radius-lg); }
.trust-card strong { display: block; font-size: 19px; margin-bottom: 10px; letter-spacing: -0.02em; }
.trust-card span { color: var(--muted); font-size: 14px; line-height: 1.5; }
.cert-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 22px; }
.cert-gallery img { width: 100%; height: 320px; object-fit: contain; border-radius: 28px; background: rgba(255,255,255,.78); padding: 18px; box-shadow: 0 18px 50px rgba(14,46,96,.08); }

.history-line { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.history-line div { position: relative; padding: 22px 18px; border-radius: 24px; background: rgba(255,255,255,.72); border: 1px solid rgba(255,255,255,.74); min-height: 180px; }
.history-line strong { display: block; font-size: 26px; color: var(--blue); margin-bottom: 16px; }
.history-line span { color: var(--muted); line-height: 1.6; font-size: 14px; }

.team-card { display: grid; grid-template-columns: .9fr 1.1fr; gap: 34px; align-items: center; padding: 24px; border-radius: 44px; background: rgba(255,255,255,.72); border: 1px solid rgba(255,255,255,.72); box-shadow: var(--shadow); }
.team-photo img { border-radius: 30px; width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.team-copy { padding: 24px; }
.team-points { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }

.cta-section { margin-top: 50px; margin-bottom: 60px; padding: 78px 56px; text-align: center; border-radius: 48px; color: white; background: radial-gradient(circle at 18% 15%, rgba(3,145,185,.95), transparent 34%), linear-gradient(145deg, #06162c, #0e2e60 46%, #0e51a0); box-shadow: 0 30px 90px rgba(14,46,96,.32); }
.cta-section .eyebrow, .cta-section p { color: rgba(255,255,255,.78); }
.cta-actions { justify-content: center; }

.site-footer { width: min(var(--max), calc(100% - 40px)); margin: 0 auto 34px; padding: 24px 4px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 14px; }
.site-footer img { height: 30px; width: auto; }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: .12s; } .delay-2 { transition-delay: .22s; } .delay-3 { transition-delay: .32s; }

@media (max-width: 980px) {
  .nav { display: none; }
  .hero, .solution-section, .case-section, .team-card { grid-template-columns: 1fr; }
  .hero { padding-top: 70px; min-height: auto; }
  .hero-visual { min-height: 500px; }
  .metric-band, .stage-timeline, .capability-grid, .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .pain-grid { grid-template-columns: 1fr; }
  .history-line { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .section-shell, .site-header, .site-footer { width: min(100% - 24px, var(--max)); }
  .site-header { top: 8px; margin-top: 8px; height: 54px; padding-left: 14px; }
  .brand img { height: 24px; max-width: 136px; object-fit: contain; }
  .nav-cta { padding: 9px 13px; font-size: 13px; white-space: nowrap; }
  .hero { padding-top: 54px; gap: 24px; }
  h1 { font-size: clamp(40px, 12vw, 52px); letter-spacing: -0.06em; }
  .hero-subtitle { font-size: 17px; line-height: 1.68; }
  .hero-actions, .cta-actions { width: 100%; }
  .button { width: 100%; min-height: 50px; }
  .hero-visual { min-height: 390px; }
  .device-card { inset: 28px 0 auto 0; min-height: 340px; padding: 22px; border-radius: 30px; }
  .device-card h2 { font-size: 26px; }
  .loop-grid { grid-template-columns: 1fr; gap: 10px; }
  .loop-grid div { min-height: auto; padding: 14px; }
  .orb-blue { width: 260px; height: 260px; right: -30px; }
  .orb-cyan { width: 160px; height: 160px; left: -40px; bottom: 20px; }
  .metric-band, .stage-timeline, .capability-grid, .trust-grid, .cert-gallery, .history-line { grid-template-columns: 1fr; }
  .metric-band { margin-top: 6px; margin-bottom: 54px; }
  .section-heading h2, .case-copy h2, .team-copy h2, .cta-section h2 { font-size: clamp(32px, 9vw, 42px); }
  .foundation { height: auto; padding: 24px; display: grid; gap: 12px; }
  .foundation::before, .foundation::after { display: none; }
  .foundation-core, .foundation-item { position: static; transform: none; width: 100%; height: auto; border-radius: 24px; }
  .foundation-core { min-height: 120px; }
  .cert-gallery img { height: auto; max-height: 360px; }
  .team-card { padding: 14px; border-radius: 32px; }
  .team-copy { padding: 12px; }
  .split-section, .pain-section, .solution-section, .capabilities-section, .case-section, .company-section, .history-section, .team-section, .cta-section { padding: 64px 0; }
  .cta-section { padding: 54px 24px; border-radius: 34px; }
  .site-footer { flex-direction: column; align-items: flex-start; }
}