:root {
  --white: #ffffff;
  --navy: #16345b;
  --navy-deep: #0f2440;
  --navy-mid: #1f4a7a;
  --surface: #f4f6f9;
  --text: #16335b;
  --text-muted: rgba(22, 51, 91, 0.68);
  --line: rgba(22, 51, 91, 0.1);
  --font-body: 'Noto Sans JP', sans-serif;
  --font-en: 'Montserrat', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='140' viewBox='0 0 200 140'%3E%3Ctext x='8' y='42' fill='%2316335b' fill-opacity='0.022' font-family='Montserrat,sans-serif' font-weight='800' font-size='20' transform='rotate(-28 100 70)'%3ENB%3C/text%3E%3Ctext x='46' y='74' fill='%2316335b' fill-opacity='0.022' font-family='Montserrat,sans-serif' font-weight='800' font-size='20' transform='rotate(-28 100 70)'%3ENEX%3C/text%3E%3C/svg%3E");
  background-size: 200px 140px;
  pointer-events: none;
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 14px clamp(20px, 4vw, 48px);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-logo {
  display: flex;
  align-items: center;
  justify-self: start;
}

.logo-svg {
  width: 100%;
  height: auto;
  display: block;
}

.logo-svg--header {
  height: 40px;
  width: auto;
}

.site-nav {
  display: flex;
  gap: clamp(20px, 3vw, 36px);
  justify-self: center;
}

.site-nav a {
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: rgba(22, 51, 91, 0.55);
  transition: color 0.2s;
}

.site-nav a:hover { color: var(--navy); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-self: end;
}

.header-cta {
  display: none;
  padding: 10px 20px;
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  transition: background 0.2s;
}

.header-cta:hover { background: var(--navy-deep); }

.back-link {
  font-family: var(--font-en);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: rgba(22, 51, 91, 0.45);
  transition: color 0.2s;
}

.back-link:hover { color: var(--navy); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding: 100px 0 0;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  animation: heroKenBurns 24s ease-out forwards;
}

@keyframes heroKenBurns {
  from { transform: scale(1.07); }
  to { transform: scale(1); }
}

.hero-visual-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(22, 51, 91, 0.55) 0%, rgba(15, 36, 64, 0.88) 62%, rgba(15, 36, 64, 0.96) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 720px;
  padding-bottom: clamp(64px, 10vw, 100px);
}

.hero-copy {
  color: var(--white);
}

.logo-svg--hero {
  width: min(100%, 240px);
  margin-bottom: clamp(28px, 5vw, 44px);
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.15));
}

.eyebrow {
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.32em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 20px;
}

.hero-copy h1 {
  font-weight: 900;
  font-size: clamp(1.6rem, 3.8vw, 2.6rem);
  line-height: 1.45;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
}

.hero-lead {
  font-weight: 900;
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 10px;
  max-width: 26em;
}

.hero-en {
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  background: var(--white);
  color: var(--navy);
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  transition: transform 0.2s, background 0.2s, color 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
  background: var(--surface);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.55);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
}

.btn-block { width: 100%; }

/* ── Trust bar ── */
.trust-bar {
  background: var(--navy);
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-inner {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 28px 0;
}

.trust-item {
  flex: 1;
  min-width: 180px;
  text-align: center;
  padding: 8px 24px;
}

.trust-label {
  display: block;
  font-family: var(--font-en);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.28em;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 6px;
}

.trust-item p {
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

.trust-divider {
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
  align-self: stretch;
  margin: 4px 0;
}

/* ── Sections ── */
.section-label {
  font-family: var(--font-en);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.35em;
  color: rgba(22, 51, 91, 0.4);
  margin-bottom: 16px;
}

.section-title {
  font-weight: 900;
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  color: var(--navy);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

/* ── Photos ── */
.photo-frame {
  overflow: hidden;
  margin: 0;
  background: var(--surface);
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.photo-frame:hover img {
  transform: scale(1.04);
}

.about {
  padding: clamp(80px, 10vw, 120px) 0;
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  grid-template-rows: auto auto;
  gap: clamp(24px, 4vw, 40px) clamp(40px, 6vw, 80px);
  align-items: start;
}

.about-photo {
  grid-column: 1 / -1;
  aspect-ratio: 21 / 8;
  min-height: 200px;
  border: 1px solid var(--line);
}

.about-photo.wide img {
  object-position: center 30%;
}

.about-head h2 {
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.5;
  color: var(--navy);
}

.about-lead {
  font-weight: 900;
  font-size: clamp(1rem, 1.8vw, 1.1rem);
  line-height: 1.95;
  color: var(--navy);
  margin-bottom: 20px;
}

.about-body p:last-child {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.approach {
  padding: clamp(80px, 10vw, 120px) 0;
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.approach-layout {
  display: grid;
  grid-template-columns: minmax(260px, 380px) 1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

.approach-photo {
  aspect-ratio: 4 / 3;
  margin-top: 8px;
  border: 1px solid var(--line);
}

.approach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.approach-grid article {
  background: var(--white);
  padding: clamp(28px, 4vw, 40px) clamp(24px, 3vw, 32px);
}

.approach-grid .step {
  font-family: var(--font-en);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--navy-mid);
  display: block;
  margin-bottom: 16px;
}

.approach-grid h3 {
  font-weight: 900;
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 12px;
}

.approach-grid p {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-muted);
  line-height: 1.85;
}

.core {
  padding: clamp(80px, 10vw, 120px) 0;
  background: var(--navy-deep);
  color: var(--white);
}

.core-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.core-photo {
  aspect-ratio: 4 / 3;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.core-copy .section-label { color: rgba(255, 255, 255, 0.4); }

.core-copy h2 {
  font-weight: 900;
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  line-height: 1.55;
  margin-bottom: 20px;
}

.core-copy p {
  font-weight: 700;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.72);
}

.core-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.core .section-label { color: rgba(255, 255, 255, 0.4); }

.core h2 {
  font-weight: 900;
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  line-height: 1.55;
}

.core-grid > p {
  font-weight: 700;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.72);
  padding-top: 28px;
}

.services {
  padding: clamp(80px, 10vw, 120px) 0;
  background: var(--white);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  border: 1px solid var(--line);
  background: var(--white);
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.service-card:hover {
  border-color: rgba(22, 51, 91, 0.22);
  box-shadow: 0 12px 40px rgba(22, 51, 91, 0.06);
}

.service-photo {
  aspect-ratio: 16 / 10;
  margin: 0;
  overflow: hidden;
}

.service-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.service-card:hover .service-photo img {
  transform: scale(1.05);
}

.service-body {
  padding: 28px 24px 32px;
}

.service-grid .num {
  font-family: var(--font-en);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: rgba(22, 51, 91, 0.35);
  display: block;
  margin-bottom: 16px;
}

.service-grid h3 {
  font-weight: 900;
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 12px;
}

.service-grid p {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--text-muted);
  line-height: 1.85;
}

.news {
  padding: clamp(80px, 10vw, 120px) 0;
  background: var(--surface);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.news-list {
  list-style: none;
  border-top: 1px solid var(--line);
}

.news-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.news-meta time {
  font-family: var(--font-en);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(22, 51, 91, 0.45);
}

.news-cat {
  font-family: var(--font-en);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--white);
  background: var(--navy);
  padding: 3px 8px;
}

.news-cat--group {
  background: var(--navy-mid);
}

.news-title {
  font-weight: 900;
  font-size: clamp(0.95rem, 1.8vw, 1.05rem);
  line-height: 1.75;
  color: var(--navy);
}

.contact {
  position: relative;
  padding: clamp(80px, 10vw, 120px) 0;
  overflow: hidden;
}

.contact-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.contact-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.contact-visual-overlay {
  position: absolute;
  inset: 0;
  background: rgba(244, 246, 249, 0.92);
}

.contact-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}

.contact-head h2 {
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.45;
  color: var(--navy);
  margin-bottom: 16px;
}

.contact-desc {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  max-width: 24em;
}

.contact-box {
  background: var(--white);
  border: 1px solid var(--line);
  padding: clamp(28px, 4vw, 40px);
}

.contact-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.contact-row:last-of-type { border-bottom: none; }

.contact-key {
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: rgba(22, 51, 91, 0.45);
}

.contact-val {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--navy);
}

.contact-val.contact-name {
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

a.contact-val {
  border-bottom: 1px solid rgba(22, 51, 91, 0.15);
  transition: border-color 0.2s;
}

a.contact-val:hover { border-color: var(--navy); }

.contact-actions {
  margin-top: 28px;
  padding-top: 8px;
}

.contact-actions .btn {
  background: var(--navy);
  color: var(--white);
}

.contact-actions .btn:hover {
  background: var(--navy-deep);
}

.footer {
  padding: 28px 0;
  background: var(--white);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.68rem;
  font-weight: 700;
  color: rgba(22, 51, 91, 0.45);
}

.footer a {
  font-family: var(--font-en);
  letter-spacing: 0.06em;
  transition: color 0.2s;
}

.footer a:hover { color: var(--navy); }

/* ── Responsive ── */
@media (min-width: 768px) {
  .header-cta { display: inline-flex; }
}

@media (max-width: 900px) {
  .hero-content {
    max-width: none;
  }

  .about-grid,
  .core-layout,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-photo {
    grid-column: 1;
    aspect-ratio: 16 / 10;
  }

  .approach-layout {
    grid-template-columns: 1fr;
  }

  .core-grid > p { padding-top: 0; }

  .approach-grid,
  .service-grid {
    grid-template-columns: 1fr;
  }

  .trust-divider { display: none; }

  .site-nav { display: none; }

  .site-header {
    grid-template-columns: 1fr auto;
  }
}

@media (max-width: 480px) {
  .contact-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}