:root {
  --brand: #087fe5;
  --brand-deep: #075ca7;
  --accent: #00a98f;
  --ink: #16202a;
  --muted-ink: #52606d;
  --paper: #f5f7f8;
  --white: #ffffff;
  --line: #dce3e8;
  --dark: #101a22;
  --shadow: 0 16px 36px rgba(22, 32, 42, 0.1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Lexend", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
button, a { font: inherit; }
a { color: inherit; }
img { display: block; max-width: 100%; }
body::before, body::after { content: none !important; display: none !important; }
body > img, body > svg, body > canvas, body > iframe { display: none !important; }
h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 20;
  padding: 8px 12px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.shell { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.section { padding: 112px 0; }
.eyebrow { color: var(--brand-deep); font-size: 13px; font-weight: 700; line-height: 1.3; text-transform: uppercase; }
.eyebrow.light { color: #aee9df; }
h1, h2, h3 { font-weight: 700; letter-spacing: 0; line-height: 1.16; }
h2 { font-size: 42px; max-width: 760px; }
h3 { font-size: 22px; }

.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, 0.96); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-size: 17px; font-weight: 700; text-decoration: none; }
.brand img { width: 42px; height: 42px; object-fit: contain; }
.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a { color: #34404b; font-size: 14px; font-weight: 600; text-decoration: none; transition: color 180ms ease, background-color 180ms ease; }
.site-nav a:hover { color: var(--brand-deep); }
.site-nav .nav-cta { padding: 9px 14px; color: var(--white); background: var(--brand); border: 1px solid var(--brand); }
.site-nav .nav-cta:hover { color: var(--white); background: var(--brand-deep); }
.menu-toggle { display: none; min-width: 44px; min-height: 44px; border: 1px solid var(--line); color: var(--ink); background: var(--white); cursor: pointer; }

.hero { position: relative; min-height: min(700px, 70svh); display: flex; align-items: center; overflow: hidden; color: var(--white); background: #1a3135 url("assets/pcba-hero.jpg") center / cover no-repeat; }
.hero-shade { position: absolute; inset: 0; background: rgba(7, 26, 34, 0.78); }
.hero-content { position: relative; padding: 96px 0 130px; }
.hero h1 { margin-top: 20px; font-size: 62px; max-width: 820px; }
.hero-statement { margin-top: 22px; font-size: 31px; font-weight: 600; line-height: 1.3; }
.hero-copy { max-width: 640px; margin-top: 18px; color: #d9e6ea; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 10px 18px; border: 1px solid transparent; font-size: 15px; font-weight: 700; text-decoration: none; transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease; }
.button-primary { color: var(--white); background: var(--brand); border-color: var(--brand); }
.button-primary:hover { background: #0a6fc6; border-color: #0a6fc6; }
.button-ghost { color: var(--white); border-color: rgba(255, 255, 255, 0.75); }
.button-ghost:hover { background: rgba(255, 255, 255, 0.13); }
.hero-foot { position: absolute; right: 0; bottom: 26px; left: 0; display: flex; align-items: center; gap: 12px; color: #c0d1d4; font-size: 12px; font-weight: 600; }
.hero-foot i { width: 34px; height: 1px; background: #78d4c6; }

.intro { padding-top: 64px; background: var(--paper); }
.intro-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 72px; }
.intro-grid > p { padding-top: 10px; }
.intro-grid h2 { max-width: 700px; }
.intro-grid div > p { max-width: 700px; margin-top: 24px; color: var(--muted-ink); font-size: 18px; }
.section-heading { display: grid; grid-template-columns: 1fr 2fr; gap: 32px; align-items: start; margin-bottom: 54px; }
.section-heading .eyebrow { padding-top: 9px; }
.section-copy { max-width: 560px; margin-top: 20px; color: var(--muted-ink); }

.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability { min-height: 400px; padding: 28px 24px 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); transition: background-color 180ms ease, box-shadow 180ms ease; }
.capability:hover { background: #f7fcff; box-shadow: inset 0 3px 0 var(--brand); }
.capability-index { display: block; color: var(--accent); font-size: 13px; font-weight: 700; }
.capability h3 { margin-top: 56px; }
.capability p { margin-top: 17px; color: var(--muted-ink); font-size: 15px; }
.capability ul { display: grid; gap: 8px; margin-top: 26px; list-style: none; color: #3c4953; font-size: 14px; }
.capability li { padding-left: 14px; position: relative; }
.capability li::before { content: ""; position: absolute; top: 10px; left: 0; width: 5px; height: 5px; background: var(--brand); }

.industries { background: var(--dark); color: var(--white); }
.industries .eyebrow { color: #70dccc; }
.industries .section-heading { margin-bottom: 42px; }
.industry-list { border-top: 1px solid #41505a; }
.industry { display: grid; grid-template-columns: 70px minmax(200px, 1fr) 1.45fr; gap: 28px; align-items: center; padding: 27px 0; border-bottom: 1px solid #41505a; }
.industry-number { color: #70dccc; font-size: 14px; font-weight: 700; }
.industry-type { color: #afc1c6; font-size: 13px; }
.industry h3 { margin-top: 5px; }
.industry > p { color: #d1dde0; }

.process-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 84px; }
.process .section-heading { display: block; margin: 0; }
.process .section-heading h2 { margin-top: 18px; }
.process-list { list-style: none; border-top: 1px solid var(--line); }
.process-list li { display: grid; grid-template-columns: 58px 1fr; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.process-list span { color: var(--brand); font-size: 14px; font-weight: 700; }
.process-list h3 { font-size: 19px; }
.process-list p { margin-top: 6px; color: var(--muted-ink); font-size: 15px; }

.contact { padding: 86px 0; background: var(--brand); color: var(--white); }
.contact-inner { display: grid; grid-template-columns: 1.25fr 1fr; gap: 72px; align-items: end; }
.contact h2 { margin-top: 18px; }
.contact-details { display: grid; gap: 12px; color: #e1f2ff; font-size: 16px; font-style: normal; }
.contact-details a { color: var(--white); font-weight: 700; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.contact-details address { font-style: normal; }
.site-footer { padding: 24px 0; background: var(--ink); color: #c5d2d8; font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; }
.icp-link { color: #c5d2d8; text-decoration: none; }
.icp-link:hover { color: var(--white); text-decoration: underline; text-underline-offset: 3px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity 360ms ease, transform 360ms ease; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .capability { min-height: 330px; }
  .capability h3 { margin-top: 40px; }
  .process-layout { gap: 48px; }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 32px, 1160px); }
  .section { padding: 76px 0; }
  h2 { font-size: 32px; }
  .header-inner { min-height: 68px; }
  .brand img { width: 36px; height: 36px; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav { position: absolute; top: 68px; right: 0; left: 0; display: none; padding: 12px 16px 20px; flex-direction: column; align-items: stretch; gap: 4px; border-bottom: 1px solid var(--line); background: var(--white); }
  .site-nav.is-open { display: flex; }
  .site-nav a { min-height: 44px; display: flex; align-items: center; padding: 0 8px; }
  .site-nav .nav-cta { justify-content: center; margin-top: 6px; }
  .hero { min-height: 74svh; }
  .hero-content { padding: 72px 0 110px; }
  .hero h1 { font-size: 38px; }
  .hero-statement { font-size: 24px; }
  .hero-copy { font-size: 16px; }
  .hero-foot { bottom: 20px; gap: 8px; font-size: 10px; }
  .hero-foot i { width: 18px; }
  .intro-grid, .section-heading, .process-layout, .contact-inner { grid-template-columns: 1fr; gap: 24px; }
  .intro-grid > p, .section-heading .eyebrow { padding-top: 0; }
  .intro-grid div > p { font-size: 16px; }
  .section-heading { margin-bottom: 36px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability { min-height: 0; padding: 25px 22px; }
  .capability h3 { margin-top: 34px; }
  .industry { grid-template-columns: 38px 1fr; gap: 13px; align-items: start; }
  .industry > p { grid-column: 2; font-size: 15px; }
  .process-layout { gap: 38px; }
  .contact { padding: 68px 0; }
  .footer-inner { flex-direction: column; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 1ms !important; animation-duration: 1ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}