/*
  Legacy modernization service page (static)
  Tone: calm, technical, trustworthy
*/

:root{
  --bg: #0b1220;
  --surface: rgba(255,255,255,.92);
  --surface-solid: #ffffff;
  --text: #0f172a;
  --muted: rgba(15,23,42,.68);
  --line: rgba(15,23,42,.10);

  --primary: #0066cc;
  --primary-2: #00cc88;
  --accent: #b45309;

  --shadow: 0 18px 50px rgba(0,0,0,.20);
  --radius: 18px;
  --radius2: 26px;

  --font-sans: Inter, "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, Arial;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(1000px 600px at 12% 0%, rgba(0,102,204,.35), transparent 55%),
    radial-gradient(900px 600px at 88% 10%, rgba(0,204,136,.20), transparent 55%),
    linear-gradient(180deg, #0b1220 0%, #0b1220 55%, #0b1220 100%);
  line-height: 1.75;
}

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

/* a11y */
.skip{
  position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip:focus{
  position: fixed; left: 12px; top: 12px;
  width: auto; height: auto;
  padding: 10px 12px;
  background: var(--surface-solid);
  border: 1px solid rgba(0,0,0,.10);
  border-radius: 12px;
  z-index: 9999;
}

:focus-visible{ outline: 3px solid rgba(0,102,204,.35); outline-offset: 2px; }

.container{ width: min(1120px, calc(100% - 32px)); margin: 0 auto; }

/* header */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,18,32,.70);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{ display:flex; align-items:center; gap: 12px; }
.brand__mark{
  width: 42px; height: 42px;
  border-radius: 16px;
  display:grid; place-items:center;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
}
.brand__name{ color: #fff; font-weight: 900; letter-spacing: .02em; }
.brand__sub{ color: rgba(255,255,255,.70); font-size: 12px; }

.nav{ display:flex; align-items:center; gap: 10px; }
.nav__link{
  color: rgba(255,255,255,.92);
  font-weight: 800;
  font-size: 13px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
}
.nav__link:hover{ background: rgba(255,255,255,.10); }
.nav__btn{
  color: #071a12;
  font-weight: 900;
  font-size: 13px;
  padding: 10px 13px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0,204,136,1), rgba(0,102,204,.85));
  border: 1px solid rgba(255,255,255,.0);
}

.back{
  color: rgba(255,255,255,.92);
  font-weight: 900;
  font-size: 13px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
}
.back:hover{ background: rgba(255,255,255,.10); }

/* hero */
.hero{ padding: 26px 0 18px; }
.hero__inner{ display:grid; grid-template-columns: 1.15fr .85fr; gap: 16px; align-items: start; }

.hero__content{
  background: var(--surface);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  border: 1px solid rgba(15,23,42,.08);
  padding: 26px;
}
.eyebrow{
  margin: 0 0 10px;
  display:inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0,102,204,.10);
  color: rgba(0,77,153,1);
  font-weight: 900;
  font-size: 13px;
}
.hero__title{ margin: 0 0 10px; font-size: 28px; line-height: 1.25; }
.hero__lead{ margin: 0 0 16px; color: var(--muted); }

.hero__cta{ display:flex; gap: 10px; flex-wrap: wrap; }
.hero__meta{ margin-top: 14px; display:flex; gap: 8px; flex-wrap: wrap; }

.pill{
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
  background: rgba(0,204,136,.10);
  color: rgba(0,120,80,1);
}

.note{
  margin-top: 14px;
  background: rgba(180,83,9,.10);
  border: 1px solid rgba(180,83,9,.20);
  border-radius: 16px;
  padding: 12px;
  color: rgba(120,53,15,1);
}

.hero__panel .panel{
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius2);
  padding: 18px;
  color: #fff;
}
.panel__title{ font-weight: 900; margin-bottom: 8px; }
.panel__list{ margin: 0; padding-left: 18px; color: rgba(255,255,255,.80); line-height: 1.9; }
.panel__sub{ margin-top: 10px; color: rgba(255,255,255,.70); font-size: 13px; }

/* sections */
.section{ padding: 18px 0 26px; }
.section--tint{ padding: 22px 0 30px; }
.section__head{
  background: var(--surface);
  border: 1px solid rgba(15,23,42,.08);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 18px;
}
.section__title{ margin: 0 0 6px; font-size: 22px; }
.section__lead{ margin: 0; color: var(--muted); }

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

.card{
  background: var(--surface);
  border: 1px solid rgba(15,23,42,.08);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 18px;
}
.card__title{ margin: 0 0 8px; font-size: 16px; }
.card__desc{ margin: 0; color: var(--muted); }

.section--tint{ background: rgba(255,255,255,.08); border-top: 1px solid rgba(255,255,255,.10); border-bottom: 1px solid rgba(255,255,255,.10); }

.split{ display:grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.box{
  background: var(--surface);
  border: 1px solid rgba(15,23,42,.08);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 18px;
}
.box__title{ margin: 0 0 10px; font-size: 16px; }
.list{ margin: 0; padding-left: 18px; color: rgba(15,23,42,.78); line-height: 1.9; }

.timeline{ margin: 14px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.step{
  background: var(--surface);
  border: 1px solid rgba(15,23,42,.08);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 16px;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
}
.step__no{
  width: 42px; height: 42px;
  border-radius: 16px;
  display:grid; place-items: center;
  background: rgba(0,102,204,.10);
  color: rgba(0,77,153,1);
  font-weight: 900;
}
.step__title{ margin: 0 0 6px; font-size: 16px; }
.step__desc{ margin: 0 0 8px; color: var(--muted); }
.step__meta{ font-size: 12px; color: rgba(15,23,42,.70); }

.callout{
  margin-top: 14px;
  background: rgba(0,102,204,.10);
  border: 1px solid rgba(0,102,204,.18);
  border-radius: var(--radius2);
  padding: 12px 14px;
  color: rgba(0,77,153,1);
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 900;
}
.btn--primary{ color: #fff; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%); }
.btn--ghost{ background: rgba(255,255,255,.70); border-color: rgba(15,23,42,.12); }
.btn--ghost:hover{ background: rgba(255,255,255,.92); }

/* CTA */
.cta{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 14px;
  background: var(--surface);
  border: 1px solid rgba(15,23,42,.08);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 18px;
  margin-top: 14px;
}
.cta__title{ margin: 0 0 6px; font-size: 20px; }
.cta__desc{ margin: 0 0 12px; color: var(--muted); }
.cta__actions{ display:flex; gap: 10px; flex-wrap: wrap; }

.mini{
  background: rgba(0,204,136,.10);
  border: 1px solid rgba(0,204,136,.18);
  border-radius: var(--radius2);
  padding: 14px;
}
.mini__title{ font-weight: 900; margin-bottom: 8px; }
.mini__list{ margin: 0; padding-left: 18px; color: rgba(15,23,42,.78); line-height: 1.8; }

/* footer */
.footer{ padding: 20px 0 34px; }
.footer__inner{ display:flex; justify-content: space-between; align-items: center; }
.footer__small{ color: rgba(255,255,255,.75); font-size: 12px; }

/* responsive */
@media (max-width: 980px){
  .nav{ display:none; }
  .hero__inner{ grid-template-columns: 1fr; }
}

@media (max-width: 900px){
  .grid{ grid-template-columns: 1fr; }
  .split{ grid-template-columns: 1fr; }
  .cta{ grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ transition: none !important; animation: none !important; }
}