@charset "UTF-8";

:root {
  --blue: #0f88ca;
  --blue-dark: #07578c;
  --navy: #0b1722;
  --navy-2: #111f2c;
  --text: #17232e;
  --muted: #63717d;
  --line: #dce4ea;
  --light: #f4f7f9;
  --white: #ffffff;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans JP", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", YuGothic, Meiryo, sans-serif;
  line-height: 1.8;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(15,136,202,.12);
}
.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 46px; height: 46px; object-fit: contain; }
.brand strong { display: block; font-size: 1.1rem; letter-spacing: .12em; }
.brand small { display: block; color: var(--muted); font-size: .67rem; letter-spacing: .08em; }
.nav { display: flex; align-items: center; gap: 22px; font-size: .83rem; font-weight: 700; }
.nav a { transition: color .2s ease; }
.nav a:hover { color: var(--blue); }
.nav-recruit, .nav-contact { padding: 9px 15px; border-radius: 999px; }
.nav-recruit { background: var(--navy); color: var(--white); }
.nav-contact { background: var(--blue); color: var(--white); }

.hero {
  position: relative;
  min-height: 690px;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 35%, rgba(15,136,202,.35), transparent 30%),
    linear-gradient(120deg, #08121b 0%, #0d1d29 58%, #0b5f92 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: .15;
  background-image:
    linear-gradient(90deg, transparent 49.8%, rgba(255,255,255,.35) 50%, transparent 50.2%),
    linear-gradient(rgba(255,255,255,.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px);
  background-size: 100% 100%, 80px 80px, 80px 80px;
  transform: perspective(700px) rotateX(55deg) scale(1.5) translateY(180px);
  transform-origin: center bottom;
}
.hero-inner {
  min-height: 610px;
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: 40px;
}
.hero-copy { position: relative; z-index: 2; max-width: 720px; }
.eyebrow, .section-label {
  margin: 0 0 13px;
  color: var(--blue);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .22em;
}
.hero .eyebrow { color: #72c8f2; }
.hero h1 {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 4.6rem);
  line-height: 1.18;
  letter-spacing: .02em;
}
.hero h1 span { color: #72c8f2; }
.hero-lead {
  max-width: 670px;
  margin: 27px 0 0;
  color: #d8e4eb;
  font-size: 1.02rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex;
  min-height: 48px;
  padding: 11px 22px;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  font-weight: 800;
  font-size: .88rem;
  transition: transform .2s ease, opacity .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); opacity: .94; }
.button-primary { background: var(--blue); color: var(--white); }
.button-outline { border: 1px solid rgba(255,255,255,.55); color: var(--white); }
.button-white { background: var(--white); color: var(--navy); }
.hero-mark {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: .25;
}
.hero-mark img {
  width: min(460px, 70%);
  filter: drop-shadow(0 20px 60px rgba(0,0,0,.25));
}
.hero-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,.24);
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-bottom-inner {
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: 34px;
  color: #d9e7ee;
  font-size: .78rem;
  letter-spacing: .08em;
}
.hero-bottom-inner span::before { content: "—"; margin-right: 10px; color: #72c8f2; }

.section { padding: 105px 0; }
.section-heading { margin-bottom: 48px; }
.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
  letter-spacing: .03em;
}
.section-heading > p:last-child { margin: 16px 0 0; color: var(--muted); }
.section-heading-light h2 { color: var(--white); }
.section-heading-light > p:last-child { color: #b7c5cf; }

.section-business { background: var(--light); }
.business-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.business-card {
  position: relative;
  min-height: 285px;
  grid-column: span 2;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  overflow: hidden;
}
.business-card-main {
  grid-column: span 3;
  background: linear-gradient(145deg, #0d2535, #0b5d8f);
  color: var(--white);
  border: 0;
}
.business-card:nth-child(3) { grid-column: span 3; }
.business-card:nth-child(4), .business-card:nth-child(5) { grid-column: span 3; }
.card-number {
  position: absolute;
  top: 17px;
  right: 22px;
  color: #9fb0bb;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .14em;
}
.business-card-main .card-number { color: #8dd5f5; }
.card-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 25px;
  display: grid;
  place-items: center;
  border: 1px solid var(--blue);
  color: var(--blue);
  font-weight: 900;
  letter-spacing: .05em;
}
.business-card-main .card-icon { border-color: #7bd1f4; color: #7bd1f4; }
.business-card h3 { margin: 0 0 13px; font-size: 1.3rem; }
.business-card p { margin: 0; color: var(--muted); font-size: .91rem; }
.business-card-main p { color: #d9e7ee; }

.section-dark { background: var(--navy); }
.strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255,255,255,.16);
}
.strength-item {
  min-height: 260px;
  padding: 30px 26px;
  border-right: 1px solid rgba(255,255,255,.16);
}
.strength-item:first-child { border-left: 1px solid rgba(255,255,255,.16); }
.strength-item > span { color: #62c4ef; font-size: .75rem; font-weight: 800; letter-spacing: .15em; }
.strength-item h3 { margin: 25px 0 13px; color: var(--white); font-size: 1.15rem; line-height: 1.5; }
.strength-item p { margin: 0; color: #afc0cb; font-size: .86rem; }

.works-placeholder {
  min-height: 320px;
  display: grid;
  place-items: center;
  align-content: center;
  border: 1px dashed #b9c8d2;
  background:
    linear-gradient(135deg, rgba(15,136,202,.07), transparent 50%),
    #f8fafb;
  text-align: center;
}
.placeholder-mark { color: var(--blue); font-size: clamp(2rem, 5vw, 4rem); font-weight: 900; letter-spacing: .12em; }
.works-placeholder p { margin: 7px 0 0; font-size: .75rem; font-weight: 800; letter-spacing: .22em; color: var(--muted); }
.works-placeholder span { margin-top: 10px; color: var(--muted); font-size: .85rem; }

.recruit-section { background: linear-gradient(120deg, #0b1722, #0b5f92); color: var(--white); }
.recruit-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.recruit-box h2 { margin: 0; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.25; }
.recruit-box p:not(.section-label) { max-width: 650px; margin: 20px 0 0; color: #d4e3eb; }
.recruit-box .section-label { color: #72c8f2; }

.section-company { background: var(--light); }
.company-layout {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 55px;
  align-items: start;
}
.company-intro { padding: 34px; background: var(--navy); color: var(--white); }
.company-intro img { width: 90px; height: 90px; object-fit: contain; margin-bottom: 25px; }
.company-intro h3 { margin: 0; font-size: 1.45rem; letter-spacing: .06em; }
.company-intro p { margin: 15px 0 0; color: #bdccd5; font-size: .9rem; }
.company-table { margin: 0; background: var(--white); border-top: 1px solid var(--line); }
.company-table div {
  display: grid;
  grid-template-columns: 155px 1fr;
  border-bottom: 1px solid var(--line);
}
.company-table dt, .company-table dd { margin: 0; padding: 15px 18px; font-size: .88rem; }
.company-table dt { color: #52606b; font-weight: 800; background: #f8fafb; }
.company-table dd { color: var(--text); }

.contact-section { padding-top: 0; background: var(--light); }
.contact-box {
  padding: 55px 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 5px solid var(--blue);
}
.contact-box h2 { margin: 0; font-size: clamp(1.5rem, 3vw, 2.2rem); line-height: 1.4; }
.contact-box p:not(.section-label) { margin: 12px 0 0; color: var(--muted); }
.contact-mail {
  flex: 0 0 auto;
  padding: 16px 24px;
  background: var(--blue);
  color: var(--white);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .02em;
}

.site-footer { padding: 35px 0; background: #07111a; color: #9aaab5; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-brand img { width: 42px; height: 42px; object-fit: contain; }
.footer-brand strong { display: block; color: var(--white); font-size: .9rem; letter-spacing: .08em; }
.footer-brand span { display: block; font-size: .68rem; }
.footer-inner > p { margin: 0; font-size: .7rem; }

@media (max-width: 960px) {
  .nav { gap: 13px; font-size: .75rem; }
  .hero-inner { grid-template-columns: 1fr .65fr; }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .business-card, .business-card-main, .business-card:nth-child(3),
  .business-card:nth-child(4), .business-card:nth-child(5) { grid-column: span 1; }
  .strength-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-item:nth-child(3) { border-left: 1px solid rgba(255,255,255,.16); }
  .company-layout { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 30px), var(--max)); }
  .site-header { position: relative; }
  .header-inner { min-height: 70px; }
  .nav { display: none; }
  .brand img { width: 40px; height: 40px; }
  .hero { min-height: 690px; }
  .hero-inner { min-height: 625px; display: block; padding-top: 90px; }
  .hero-mark {
    position: absolute;
    right: -40px;
    bottom: 70px;
    width: 280px;
  }
  .hero-copy { max-width: 100%; }
  .hero h1 { font-size: clamp(2rem, 10vw, 3.2rem); }
  .hero-lead { font-size: .9rem; }
  .hero-bottom-inner { gap: 16px; flex-wrap: wrap; padding: 12px 0; min-height: 66px; }
  .hero-bottom-inner span { font-size: .68rem; }
  .section { padding: 78px 0; }
  .business-grid, .strength-grid { grid-template-columns: 1fr; }
  .business-card, .business-card-main, .business-card:nth-child(3),
  .business-card:nth-child(4), .business-card:nth-child(5) { grid-column: auto; }
  .strength-item, .strength-item:first-child, .strength-item:nth-child(3) {
    min-height: auto;
    border-left: 1px solid rgba(255,255,255,.16);
    border-right: 1px solid rgba(255,255,255,.16);
  }
  .recruit-box, .contact-box, .footer-inner { flex-direction: column; align-items: flex-start; }
  .contact-box { padding: 38px 28px; }
  .contact-mail { width: 100%; text-align: center; }
  .company-table div { grid-template-columns: 105px 1fr; }
  .company-table dt, .company-table dd { padding: 13px 12px; font-size: .8rem; }
}