:root {
  --ink: #071c3f;
  --blue: #0759bd;
  --blue-deep: #063b84;
  --red: #dc241f;
  --paper: #f5f1e8;
  --mist: #eaf1f8;
  --white: #fff;
  --line: rgba(7, 28, 63, 0.16);
  --muted: #526077;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(7, 89, 189, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(7, 89, 189, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 34px 34px;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.72;
}

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

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 20;
  padding: .65rem 1rem;
  color: var(--white);
  background: var(--ink);
}
.skip-link:focus { top: 1rem; }

.service-topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem max(1.2rem, calc((100vw - 1180px) / 2));
  color: rgba(255,255,255,.78);
  background: var(--ink);
  font-size: .78rem;
  letter-spacing: .08em;
}
.service-topbar a { color: white; text-decoration: none; }

.service-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 82px;
  padding: .7rem max(1.2rem, calc((100vw - 1180px) / 2));
  background: rgba(245, 241, 232, .95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.service-brand {
  position: relative;
  width: 225px;
  height: 58px;
  overflow: hidden;
  background: var(--white);
}
.service-brand img {
  position: absolute;
  top: -42px;
  left: 0;
  width: 220px;
  max-width: none;
}
.service-nav { display: flex; align-items: center; gap: 1.45rem; font-weight: 700; font-size: .88rem; }
.service-nav a { text-decoration: none; }
.service-nav a:hover { color: var(--blue); }
.service-nav .nav-cta {
  padding: .65rem 1rem;
  color: var(--white);
  background: var(--blue);
  border-radius: 3px;
}

.service-hero {
  position: relative;
  overflow: hidden;
  min-height: 620px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
  gap: 5vw;
  align-items: center;
  padding: 5.8rem max(1.2rem, calc((100vw - 1180px) / 2));
  color: white;
  background:
    radial-gradient(circle at 75% 20%, rgba(40, 158, 255, .42), transparent 24rem),
    linear-gradient(128deg, #051a3b 0 61%, #0759bd 61% 100%);
}
.service-hero::after {
  content: "";
  position: absolute;
  right: -8vw;
  bottom: -22vw;
  width: 48vw;
  aspect-ratio: 1;
  border: 2px solid rgba(255,255,255,.2);
  border-radius: 50%;
  box-shadow: 0 0 0 5vw rgba(255,255,255,.04), 0 0 0 11vw rgba(255,255,255,.03);
}
.hero-copy, .hero-panel { position: relative; z-index: 1; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  margin: 0 0 1.2rem;
  color: #91c9ff;
  font: 700 .75rem/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: .18em;
}
.eyebrow::before { content: ""; width: 2.8rem; height: 2px; background: var(--red); }
.service-hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.7rem, 6.2vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}
.service-hero h1 em { display: block; color: #55b2ff; font-style: normal; }
.hero-lead { max-width: 720px; margin: 1.7rem 0 2.1rem; color: rgba(255,255,255,.78); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .75rem 1.25rem;
  border: 1px solid rgba(255,255,255,.28);
  text-decoration: none;
  font-weight: 800;
}
.button-primary { color: white; background: var(--red); border-color: var(--red); }
.button-ghost:hover { background: rgba(255,255,255,.1); }

.hero-panel {
  padding: 1.35rem;
  border: 1px solid rgba(255,255,255,.22);
  background: rgba(1, 15, 37, .42);
  box-shadow: 24px 24px 0 rgba(0,0,0,.14);
}
.hero-panel span { display: block; color: #91c9ff; font-size: .72rem; letter-spacing: .16em; }
.hero-panel ol { list-style: none; padding: 0; margin: 1rem 0 0; counter-reset: phase; }
.hero-panel li { counter-increment: phase; display: grid; grid-template-columns: 2.6rem 1fr; gap: .7rem; padding: .85rem 0; border-top: 1px solid rgba(255,255,255,.16); }
.hero-panel li::before { content: "0" counter(phase); color: #55b2ff; font: 700 .8rem/1.8 monospace; }

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 1180px;
  margin: -2.4rem auto 0;
  position: relative;
  z-index: 2;
  background: white;
  border: 1px solid var(--line);
  box-shadow: 0 20px 60px rgba(7,28,63,.12);
}
.metric-strip div { padding: 1.45rem 1.7rem; border-right: 1px solid var(--line); }
.metric-strip div:last-child { border-right: 0; }
.metric-strip b { display: block; color: var(--blue); font-size: 1.15rem; }
.metric-strip span { color: var(--muted); font-size: .84rem; }

.service-main { max-width: 1180px; margin: 0 auto; padding: 6rem 1.2rem; }
.section-heading { display: grid; grid-template-columns: .55fr 1.45fr; gap: 3rem; align-items: end; margin-bottom: 2.2rem; }
.section-heading p { margin: 0; color: var(--blue); font: 700 .75rem/1.5 monospace; letter-spacing: .16em; }
.section-heading h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.6rem); line-height: 1.08; letter-spacing: -.035em; }

.scope-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.scope-card { min-height: 230px; padding: 1.55rem; background: rgba(255,255,255,.72); border: 1px solid var(--line); }
.scope-card i { display: block; width: 2.1rem; height: .22rem; margin-bottom: 2.4rem; background: var(--red); }
.scope-card h3 { margin: 0 0 .55rem; font-size: 1.3rem; }
.scope-card p { margin: 0; color: var(--muted); font-size: .93rem; }

.process { margin-top: 6rem; padding: 3.4rem; color: white; background: var(--ink); }
.process h2 { margin: 0 0 2rem; font-size: clamp(1.9rem, 4vw, 3.1rem); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.process-grid div { padding-top: 1rem; border-top: 2px solid #237bd6; }
.process-grid b { display: block; margin-bottom: .7rem; color: #55b2ff; font-family: monospace; }
.process-grid h3 { margin: 0 0 .5rem; font-size: 1.05rem; }
.process-grid p { margin: 0; color: rgba(255,255,255,.65); font-size: .88rem; }

.faq { margin-top: 6rem; }
.faq details { border-top: 1px solid var(--line); padding: 1.2rem 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 800; font-size: 1.05rem; }
.faq details p { max-width: 780px; margin: .8rem 0 0; color: var(--muted); }

.contact-band {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 3.3rem max(1.2rem, calc((100vw - 1180px) / 2));
  color: white;
  background: var(--blue);
}
.contact-band h2 { margin: 0 0 .35rem; font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1.1; }
.contact-band p { margin: 0; color: rgba(255,255,255,.75); }
.contact-band a { min-width: 210px; color: white; background: var(--red); border-color: var(--red); }

.service-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding: 2rem max(1.2rem, calc((100vw - 1180px) / 2));
  color: rgba(255,255,255,.62);
  background: #03122b;
  font-size: .82rem;
}
.service-footer nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.service-footer a { color: white; text-decoration: none; }

@media (max-width: 820px) {
  .service-topbar span { display: none; }
  .service-header { min-height: 70px; }
  .service-brand { width: 185px; height: 48px; }
  .service-brand img { top: -35px; width: 180px; }
  .service-nav a:not(.nav-cta) { display: none; }
  .service-hero { min-height: auto; grid-template-columns: 1fr; padding-top: 4rem; padding-bottom: 5rem; }
  .hero-panel { max-width: 520px; }
  .metric-strip { grid-template-columns: 1fr; margin: 0; }
  .metric-strip div { border-right: 0; border-bottom: 1px solid var(--line); }
  .metric-strip div:last-child { border-bottom: 0; }
  .section-heading { grid-template-columns: 1fr; gap: .8rem; }
  .scope-grid { grid-template-columns: 1fr; }
  .scope-card { min-height: 0; }
  .process { padding: 2rem 1.25rem; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .contact-band, .service-footer { grid-template-columns: 1fr; }
  .contact-band a { width: 100%; }
}

@media (max-width: 520px) {
  .service-topbar { justify-content: flex-end; }
  .service-hero h1 { font-size: 2.6rem; }
  .hero-actions .button { width: 100%; }
  .process-grid { grid-template-columns: 1fr; }
}