:root {
  --bg: #09101f;
  --bg-alt: #0f1a33;
  --surface: #13213f;
  --text: #e9f0ff;
  --muted: #b7c4df;
  --primary: #6f7448;
  --accent: #8f9460;
  --line: #243458;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(9, 16, 31, 0.78);
}

.nav-wrap {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo span {
  display: inline-block;
}

.logo em {
  color: var(--primary);
  font-style: normal;
}

.logo-mark {
  width: 34px;
  height: 34px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.95rem;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font-size: 1.2rem;
  padding: 0.35rem 0.6rem;
}

.hero {
  padding: 82px 0 64px;
  background:
    linear-gradient(rgba(9, 16, 31, 0.68), rgba(9, 16, 31, 0.72)),
    url("https://images.unsplash.com/photo-1460925895917-afdab827c52f?auto=format&fit=crop&w=1800&q=80")
      center / cover no-repeat,
    radial-gradient(circle at 80% 12%, rgba(111, 116, 72, 0.32), transparent 45%),
    radial-gradient(circle at 20% 80%, rgba(143, 148, 96, 0.2), transparent 40%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
}

.kicker {
  color: var(--accent);
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

h1 {
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  line-height: 1.2;
  margin: 0 0 1.25rem;
}

h2 {
  font-size: clamp(1.55rem, 2.7vw, 2.2rem);
  margin: 0 0 1rem;
}

.lead {
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.cta-row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  background: linear-gradient(90deg, #8e9460, #a2a872);
  color: #061024;
  font-weight: 700;
  padding: 0.75rem 1.1rem;
  border-radius: 12px;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn.small {
  padding: 0.56rem 0.9rem;
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

@media (hover: hover) {
  .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.28);
    background: linear-gradient(90deg, #8a6a3f, #a78655);
    color: #f6f1e7;
  }

  .btn.ghost:hover {
    background: rgba(167, 134, 85, 0.22);
    border-color: #a78655;
    color: #ffffff;
  }
}

.hero-card {
  background: linear-gradient(170deg, var(--surface), #0f1d38);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.4rem 1.3rem;
}

.hero-card h2 {
  font-size: 1.2rem;
}

.hero-card ul {
  margin: 0 0 1rem;
  padding-left: 1.3rem;
  color: var(--muted);
  line-height: 1.7;
}

.section {
  padding: 72px 0;
}

.section.alt {
  background: var(--bg-alt);
}

.section-text {
  color: var(--muted);
  line-height: 1.9;
  max-width: 840px;
}

.feature-grid,
.service-grid,
.work-grid {
  display: grid;
  gap: 1rem;
}

.feature-grid {
  margin-top: 1.2rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature,
.card,
.work {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem;
}

.feature p,
.card p,
.work p {
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 0.2rem;
}

.service-grid {
  margin-top: 1.2rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-index {
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.service-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 0.85rem;
}

.work-grid {
  margin-top: 1.2rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.work span {
  font-size: 0.8rem;
  color: var(--accent);
}

.flow-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.flow-list li {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.95rem 1rem;
  color: var(--muted);
}

.contact-wrap {
  display: grid;
  gap: 1.3rem;
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.contact-form {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.contact-form label {
  display: block;
  margin-bottom: 0.8rem;
  font-size: 0.92rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  margin-top: 0.35rem;
  border: 1px solid #3a4f7a;
  border-radius: 10px;
  background: #0b1630;
  color: var(--text);
  padding: 0.65rem 0.7rem;
  font-family: inherit;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px 0;
  background: #060c18;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero-grid,
  .contact-wrap {
    grid-template-columns: 1fr;
  }

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

  .hero {
    padding: 68px 0 52px;
  }

  .section {
    padding: 60px 0;
  }

  .hero-card {
    padding: 1.1rem 1rem;
  }
}

@media (max-width: 780px) {
  .container {
    width: min(1120px, 94%);
  }

  .site-header {
    backdrop-filter: blur(6px);
  }

  .nav-wrap {
    min-height: 64px;
  }

  .logo {
    gap: 0.45rem;
    font-size: 0.95rem;
  }

  .logo-mark {
    width: 30px;
    height: 30px;
  }

  .menu-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    top: 64px;
    right: 4%;
    width: min(320px, 92%);
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
    padding: 0.8rem;
    border-radius: 14px;
    background: #0d1a34;
    border: 1px solid var(--line);
    transform: scale(0.98);
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
  }

  .nav.open {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
  }

  h1 {
    font-size: clamp(1.75rem, 8vw, 2.2rem);
    line-height: 1.3;
  }

  h2 {
    font-size: clamp(1.35rem, 6vw, 1.75rem);
  }

  .lead,
  .section-text,
  .feature p,
  .card p,
  .work p,
  .flow-list li,
  .contact-form label {
    font-size: 0.95rem;
    line-height: 1.75;
  }

  .cta-row {
    gap: 0.6rem;
  }

  .btn {
    width: 100%;
    text-align: center;
    padding: 0.78rem 1rem;
  }

  .btn.small {
    width: auto;
    text-align: left;
  }

  .hero-card ul {
    padding-left: 1.15rem;
    line-height: 1.65;
  }

  .feature,
  .card,
  .work,
  .contact-form {
    padding: 0.9rem;
  }

  .service-image {
    aspect-ratio: 4 / 3;
    margin-bottom: 0.7rem;
  }

  .card h3,
  .work h3,
  .feature h3 {
    margin-top: 0.35rem;
    margin-bottom: 0.45rem;
  }

  .contact-form input,
  .contact-form textarea {
    font-size: 16px;
  }

  .footer-wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.55rem;
  }
}

@media (max-width: 420px) {
  .hero {
    padding: 60px 0 44px;
  }

  .section {
    padding: 52px 0;
  }

  .container {
    width: 92%;
  }

  .nav {
    right: 4%;
    width: 92%;
  }

  .kicker {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
  }
}