/* HPH Technical Solutions — Milestones */
:root {
  --white: #FFFFFF; --gray: #F0F0F0; --black: #000000;
  --text-muted: rgba(0,0,0,0.6); --text-muted-invert: rgba(255,255,255,0.6);
  --border-invert: rgba(255,255,255,0.15);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--white); color: var(--black); font-family: 'Inter', sans-serif; }
a { color: inherit; }
a:hover { text-decoration: underline; }
::selection { background: var(--black); color: #fff; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: translateY(0); } }
.wrap { max-width: 1240px; margin: 0 auto; padding-left: 32px; padding-right: 32px; }

.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.93); backdrop-filter: blur(6px); border-bottom: 1px solid var(--gray); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding-top: 20px; padding-bottom: 20px; }
.logo { font-weight: 700; font-size: 16px; letter-spacing: 0.03em; text-decoration: none; }
.logo:hover { text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.nav-links a { text-decoration: none; font-size: 14px; font-weight: 500; }
.nav-links a:hover { text-decoration: underline; }
.nav-links a.active { font-weight: 600; }

.btn { text-decoration: none; font-size: 14px; font-weight: 600; display: inline-block; padding: 16px 30px; border-radius: 2px; transition: transform .2s ease; }
.btn:hover { text-decoration: none; transform: translateY(-3px); }
.btn-primary { color: var(--white); background: var(--black); }
.btn-invert { color: var(--black); background: var(--white); }
.btn-nav { font-size: 13px; padding: 11px 22px; }

.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 20px; }
.page-hero { padding: 96px 32px 64px; }
.page-hero h1 { font-size: 44px; line-height: 1.15; font-weight: 700; margin: 0; max-width: 700px; letter-spacing: -0.01em; text-wrap: pretty; }

[data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }
.anim-1 { opacity: 0; animation: fadeUp .7s ease .05s forwards; }
.anim-2 { opacity: 0; animation: fadeUp .8s ease .15s forwards; }

.timeline { padding: 0 32px 120px; }
.timeline-wrap { position: relative; }
.timeline-rail { position: absolute; left: 98px; top: 8px; bottom: 8px; width: 1px; background: var(--gray); }
.timeline-row { display: grid; grid-template-columns: 80px 36px 1fr; padding: 36px 0; border-bottom: 1px solid var(--gray); }
.timeline-year { font-size: 26px; font-weight: 700; }
.timeline-dot-col { display: flex; justify-content: center; }
.timeline-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--black); margin-top: 8px; transition: transform .25s ease; }
.timeline-dot:hover { transform: scale(1.6); }
.timeline-events { display: flex; flex-direction: column; gap: 12px; }
.timeline-events p { font-size: 16px; line-height: 1.6; color: var(--text-muted); margin: 0; max-width: 680px; }

.cta-band { background: var(--black); color: var(--white); }
.cta-band-inner { padding: 88px 32px; text-align: center; }
.cta-band h2 { font-size: 38px; font-weight: 700; margin: 0 0 20px; letter-spacing: -0.01em; }
.cta-band p { font-size: 16px; color: var(--text-muted-invert); margin: 0 0 32px; }

.site-footer { background: var(--black); color: var(--white); border-top: 1px solid var(--border-invert); }
.footer-grid { padding: 56px 32px 32px; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer-brand { font-weight: 700; font-size: 16px; margin-bottom: 12px; }
.footer-addr { font-size: 13px; line-height: 1.7; color: var(--text-muted-invert); max-width: 280px; margin: 0; }
.footer-heading { font-size: 12px; font-weight: 600; letter-spacing: 0.1em; color: var(--text-muted-invert); text-transform: uppercase; margin-bottom: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a, .footer-contact a { text-decoration: none; font-size: 14px; color: var(--white); }
.footer-bottom { padding: 20px 32px; border-top: 1px solid var(--border-invert); font-size: 12px; color: var(--text-muted-invert); }

@media (max-width: 720px) {
  .site-header .wrap { padding-top: 16px; padding-bottom: 16px; gap: 14px; }
  .nav-links { gap: 18px; }
  .wrap { padding-left: 24px; padding-right: 24px; }
  .page-hero { padding: 64px 24px 40px; }
  .page-hero h1 { font-size: 30px; }
  .timeline { padding: 0 24px 72px; }
  .timeline-rail { display: none; }
  .timeline-row { grid-template-columns: 56px 24px 1fr; padding: 28px 0; }
  .timeline-year { font-size: 21px; }
  .timeline-events p { font-size: 15px; }
  .cta-band-inner { padding: 64px 24px; }
  .cta-band h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 24px 24px; }
}

@media (max-width: 420px) {
  .nav-links { width: 100%; justify-content: space-between; }
  .btn-nav { padding: 10px 16px; }
  .timeline-row { grid-template-columns: 1fr; row-gap: 8px; }
  .timeline-dot-col { display: none; }
}