:root {
  --blue: #064fad;
  --blue-deep: #003c91;
  --gray-950: #111216;
  --gray-850: #26282d;
  --gray-700: #555;
  --gray-200: #e8e8e8;
  --white: #fff;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--gray-700);
  color: var(--white);
  font-family: "Noto Sans JP", system-ui, sans-serif;
  font-weight: 800;
  letter-spacing: 0;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 58px);
  background: rgba(17, 18, 22, 0.74);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.site-header.compact {
  position: sticky;
  background: var(--gray-950);
}

.brand img {
  width: 156px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.3vw, 30px);
  font-size: 15px;
}

.nav a {
  opacity: 0.9;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: #8bbcff;
  opacity: 1;
}

.nav-cta {
  padding: 12px 18px;
  background: var(--blue);
  border-radius: 6px;
}

.nav a.nav-cta:hover {
  color: var(--white);
  background: #1265d3;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  margin: 5px 0;
  background: var(--white);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 140px clamp(18px, 5vw, 72px) 64px;
  background: var(--gray-850);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(17,18,22,0.86), rgba(17,18,22,0.34) 58%, rgba(17,18,22,0.76)), url("assets/hero.png");
  background-size: cover;
  background-position: center;
  filter: saturate(1.12) contrast(1.04);
  transform: scale(1.02);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(880px, 100%);
}

.kicker {
  margin: 0 0 14px;
  color: #9ec8ff;
  font-size: clamp(14px, 1.6vw, 18px);
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero h1 {
  margin-bottom: 22px;
  font-size: clamp(54px, 9vw, 128px);
  line-height: 0.96;
  font-weight: 900;
}

.lead {
  max-width: 720px;
  margin-bottom: 34px;
  font-size: clamp(18px, 2.2vw, 28px);
  line-height: 1.55;
}

.hero-actions,
.contact {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: 6px;
  font-size: 16px;
  border: 2px solid transparent;
}

.button-primary {
  background: var(--blue);
  color: var(--white);
}

.button-primary:hover {
  background: #1265d3;
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.7);
}

.section {
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(70px, 9vw, 124px) 0;
}

.section-head {
  margin-bottom: 36px;
}

.section-head.split {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.section h2,
.page-title h1 {
  margin: 0;
  font-size: clamp(46px, 7vw, 92px);
  line-height: 1.02;
  font-weight: 900;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 5vw, 90px);
}

.service-card {
  min-height: 360px;
  padding: clamp(22px, 4vw, 38px);
  background: var(--blue);
  border-radius: 8px;
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.28);
}

.service-label {
  margin-bottom: 18px;
  font-size: clamp(24px, 3vw, 42px);
  line-height: 1;
}

.service-card h3 {
  margin-bottom: 26px;
  font-size: clamp(42px, 6.5vw, 82px);
  line-height: 0.95;
  font-weight: 900;
}

.service-card p:last-child,
.statement p,
.article-card p {
  margin-bottom: 0;
  font-size: clamp(19px, 2.1vw, 30px);
  line-height: 1.65;
}

.statement {
  background: #737373;
  padding: clamp(82px, 10vw, 140px) 18px;
}

.statement-inner {
  width: min(var(--max), 100%);
  margin: 0 auto;
}

.statement h2 {
  margin-bottom: 38px;
  font-size: clamp(46px, 8vw, 104px);
  line-height: 1.18;
  font-weight: 900;
}

.statement h2 span,
.feature-copy h2 span {
  display: inline-block;
  padding: 0 14px 8px;
  color: var(--blue);
  background: #050505;
}

.feature-band {
  width: 100%;
  min-height: 430px;
  display: flex;
  align-items: center;
  padding-left: max(18px, calc((100% - var(--max)) / 2));
  padding-right: max(18px, calc((100% - var(--max)) / 2));
  background: linear-gradient(90deg, #606060 0 42%, #4d4d4d 42% 100%);
}

.feature-copy h2 {
  max-width: 1120px;
  font-size: clamp(36px, 6.7vw, 84px);
  line-height: 1.28;
  font-weight: 900;
}

.text-link {
  color: #9ec8ff;
  font-size: 18px;
}

.news-list {
  border-top: 3px solid rgba(255, 255, 255, 0.34);
}

.news-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 3px solid rgba(255, 255, 255, 0.34);
  font-size: clamp(18px, 2.2vw, 28px);
}

.news-item time,
.article-card time {
  color: #9ec8ff;
}

.company-table {
  margin: 0;
  border-top: 3px solid rgba(255, 255, 255, 0.34);
}

.company-table div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 3px solid rgba(255, 255, 255, 0.34);
}

.company-table dt {
  color: #9ec8ff;
}

.company-table dd {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 34px);
}

.contact {
  justify-content: space-between;
  gap: 28px;
  padding: clamp(54px, 7vw, 86px) max(18px, calc((100% - var(--max)) / 2));
  background: var(--gray-950);
}

.contact h2 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(32px, 5vw, 64px);
  line-height: 1.18;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4vw, 58px);
  background: #050505;
}

.footer img {
  width: 132px;
}

.footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.page-title {
  padding: clamp(70px, 9vw, 120px) max(18px, calc((100% - var(--max)) / 2)) 46px;
  background: var(--gray-850);
}

.article-list {
  display: grid;
  gap: 22px;
}

.article-card {
  padding: clamp(24px, 4vw, 42px);
  background: #626262;
  border-left: 12px solid var(--blue);
}

.article-card h2 {
  margin: 10px 0 18px;
  font-size: clamp(30px, 4vw, 56px);
}

@media (max-width: 820px) {
  .site-header {
    min-height: 68px;
  }

  .brand img {
    width: 124px;
  }

  .nav-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 18px 18px;
    background: rgba(17, 18, 22, 0.96);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 16px 4px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  }

  .nav-cta {
    margin-top: 12px;
    text-align: center;
  }

  .hero {
    min-height: 760px;
    padding-top: 110px;
  }

  .business-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: 280px;
  }

  .section-head.split,
  .contact,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .news-item,
  .company-table div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .statement h2 span {
    padding-inline: 8px;
  }
}