:root {
  --navy: #071b4a;
  --navy-dark: #041331;
  --blue: #0d5ed7;
  --blue-2: #3d86ff;
  --blue-soft: #eef5ff;
  --brown: #a86632;
  --brown-dark: #6f3f1d;
  --brown-soft: #f7f0ea;
  --text: #111827;
  --muted: #5f6670;
  --line: #dfe5ee;
  --bg: #ffffff;
  --soft: #f6f8fb;
  --shadow: 0 24px 70px rgba(7, 27, 74, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(238, 245, 255, 0.5), transparent 360px),
    var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Noto Sans JP", "Hiragino Sans", sans-serif;
  letter-spacing: 0.02em;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 84px;
  padding: 0 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(13, 94, 215, 0.14);
  box-shadow: 0 10px 36px rgba(7, 27, 74, 0.06);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 20px;
}

.logo-image {
  display: block;
  width: 78px;
  height: 64px;
  object-fit: contain;
}

.footer-logo-image {
  width: 132px;
  height: 142px;
}

.mark {
  width: 40px;
  height: 17px;
  display: grid;
  grid-template-columns: 7px 7px 7px 7px;
  gap: 4px;
  align-items: center;
}

.mark span {
  display: block;
  background: #050505;
}

.mark span:nth-child(1) { height: 8px; border-radius: 50%; }
.mark span:nth-child(2) { height: 17px; }
.mark span:nth-child(3) { height: 7px; }
.mark span:nth-child(4) { height: 17px; }

.nav {
  display: flex;
  gap: 26px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--navy);
}

.nav a {
  position: relative;
  padding: 8px 0;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--brown);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}

.nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 0;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.25s ease, opacity 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.92;
  box-shadow: 0 20px 48px rgba(13, 94, 215, 0.26);
}

.btn-blue {
  min-width: 118px;
  height: 42px;
  padding: 0 24px;
  color: #fff;
  background:
    linear-gradient(135deg, var(--blue), var(--blue-2));
  font-size: 14px;
  box-shadow: 0 18px 44px rgba(13, 94, 215, 0.24);
}

.btn-large {
  min-width: 280px;
  height: 74px;
  font-size: 18px;
}

.menu-btn {
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  display: grid;
  place-items: center;
  gap: 0;
  cursor: pointer;
}

.menu-btn span {
  width: 30px;
  height: 1.5px;
  background: var(--navy);
  display: block;
}

.hero {
  position: relative;
  min-height: 600px;
  height: calc(100vh - 84px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 18%, rgba(168, 102, 50, 0.32), transparent 28%),
    linear-gradient(90deg, rgba(4, 19, 49, 0.94) 0%, rgba(7, 27, 74, 0.72) 42%, rgba(13, 94, 215, 0.2) 100%),
    linear-gradient(180deg, rgba(7, 27, 74, 0) 0%, rgba(4, 19, 49, 0.5) 100%),
    url("https://images.unsplash.com/photo-1600607687939-ce8a6c25118c?auto=format&fit=crop&w=1800&q=80");
  background-size: cover;
  background-position: center;
  transform: scale(1.02);
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100%, 1400px);
  margin: 0 auto;
  padding: 0 72px;
  color: #fff;
}

.eyebrow,
.label {
  margin: 0 0 22px;
  font-size: 12px;
  letter-spacing: 0.14em;
  font-weight: 700;
}

.eyebrow {
  color: rgba(255, 255, 255, 0.82);
}

.hero h1 {
  margin: 0 0 50px;
  font-size: clamp(56px, 8vw, 96px);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -0.04em;
  text-shadow: 0 18px 50px rgba(4, 19, 49, 0.35);
}

.hero-lead {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 28px);
  line-height: 2;
  font-weight: 700;
}

.hero-line {
  display: block;
  width: 92px;
  height: 2px;
  margin-top: 42px;
  background: linear-gradient(90deg, #fff, var(--brown));
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--line);
}

.concept {
  min-height: 360px;
  background:
    linear-gradient(90deg, #fff 0%, #fff 50%, rgba(238, 245, 255, 0.68) 50%, rgba(238, 245, 255, 0.68) 100%);
}

.section-text {
  padding: 86px 72px 78px;
  max-width: 690px;
  margin-left: auto;
}

.section-text h2,
.section-head h2 {
  margin: 0 0 28px;
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.55;
  letter-spacing: -0.02em;
  color: var(--navy);
  position: relative;
}

.section-text h2::after,
.section-head h2::after {
  content: "";
  display: block;
  width: 58px;
  height: 2px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--blue), var(--brown));
}

.section-text p:not(.label) {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 2.05;
  font-size: 15px;
}

.image-panel {
  min-height: 360px;
  background-size: cover;
  background-position: center;
}

.concept-image {
  background-image:
    linear-gradient(rgba(7, 27, 74, 0.08), rgba(168, 102, 50, 0.16)),
    url("https://images.unsplash.com/photo-1518005020951-eccb494ad742?auto=format&fit=crop&w=1200&q=80");
  filter: saturate(0.84) contrast(1.04);
}

.service,
.flow,
.price,
.faq {
  width: min(100%, 1400px);
  margin: 0 auto;
  padding: 72px 72px;
  border-bottom: 1px solid var(--line);
}

.section-head {
  margin-bottom: 38px;
}

.label {
  color: var(--brown);
  margin-bottom: 12px;
}

.service {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(238, 245, 255, 0.9));
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  border: 0;
}

.service-grid article {
  min-height: 180px;
  padding: 42px 34px 34px;
  text-align: center;
  border: 1px solid rgba(13, 94, 215, 0.12);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 45px rgba(7, 27, 74, 0.06);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.service-grid article:hover {
  transform: translateY(-4px);
  border-color: rgba(168, 102, 50, 0.35);
  box-shadow: var(--shadow);
}

.service-grid h3 {
  font-size: 16px;
  margin: 18px 0 10px;
  font-weight: 500;
  color: var(--navy);
}

.service-grid p,
.flow-grid p,
.faq-grid p,
.info-grid p,
.info-grid li {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

.icon {
  width: 42px;
  height: 42px;
  margin: 0 auto;
  position: relative;
  color: var(--blue);
  background: rgba(13, 94, 215, 0.08);
  border-radius: 50%;
}

.icon::before,
.icon::after {
  content: "";
  position: absolute;
  border: 2px solid currentColor;
}

.monitor::before {
  inset: 8px 4px 14px;
  border-radius: 2px;
}

.monitor::after {
  width: 20px;
  height: 2px;
  left: 11px;
  bottom: 6px;
  border-width: 2px 0 0;
}

.camera::before {
  inset: 10px 4px 6px;
  border-radius: 6px;
}

.camera::after {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  left: 15px;
  top: 19px;
}

.pen::before {
  width: 22px;
  height: 7px;
  transform: rotate(-45deg);
  left: 10px;
  top: 18px;
}

.pen::after {
  width: 26px;
  height: 26px;
  left: 7px;
  top: 8px;
  border-width: 0 0 2px 2px;
}

.rocket::before {
  width: 17px;
  height: 30px;
  left: 13px;
  top: 2px;
  border-radius: 50% 50% 6px 6px;
  transform: rotate(45deg);
}

.rocket::after {
  width: 10px;
  height: 10px;
  left: 6px;
  top: 25px;
  border-width: 0 0 2px 2px;
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.flow-grid article {
  padding: 28px 24px 24px;
  position: relative;
  border: 1px solid rgba(13, 94, 215, 0.14);
  background: #fff;
  box-shadow: 0 18px 48px rgba(7, 27, 74, 0.07);
}

.flow-grid article::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--blue), var(--brown));
}

.flow-grid span {
  display: block;
  margin-bottom: 18px;
  font-size: 42px;
  line-height: 1;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--brown);
}

.flow-grid h3 {
  margin: 0 0 10px;
  font-size: 15px;
  color: var(--navy);
}

.thumb {
  height: 120px;
  margin-top: 20px;
  background-size: cover;
  background-position: center;
  filter: saturate(0.72) contrast(1.05);
}

.thumb-1 { background-image: url("https://images.unsplash.com/photo-1455390582262-044cdead277a?auto=format&fit=crop&w=600&q=80"); }
.thumb-2 { background-image: url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=600&q=80"); }
.thumb-3 { background-image: url("https://images.unsplash.com/photo-1516035069371-29a1b244cc32?auto=format&fit=crop&w=600&q=80"); }
.thumb-4 { background-image: url("https://images.unsplash.com/photo-1497366811353-6870744d04b2?auto=format&fit=crop&w=600&q=80"); }

.price-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.price-card {
  min-height: 230px;
  padding: 44px;
  color: #fff;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  position: relative;
  background: var(--navy);
  box-shadow: var(--shadow);
}

.price-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.32;
  filter: saturate(0.75) contrast(1.1);
}

.price-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(168, 102, 50, 0.42), transparent 26%),
    linear-gradient(90deg, rgba(4,19,49,0.96), rgba(13,94,215,0.5));
}

.price-card > div {
  position: relative;
  z-index: 1;
}

.price-1::before { background-image: url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1000&q=80"); }
.price-2::before { background-image: url("https://images.unsplash.com/photo-1502920917128-1aa500764cbd?auto=format&fit=crop&w=1000&q=80"); }

.price-card p {
  margin: 0 0 18px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.78);
}

.price-card h3 {
  margin: 0 0 18px;
  font-size: clamp(42px, 5vw, 62px);
  font-weight: 400;
  letter-spacing: -0.04em;
  color: #fff;
}

.price-card strong,
.price-card small,
.price-card li {
  display: block;
  font-size: 13px;
  line-height: 1.9;
}

.price-card ul {
  margin: 0 0 12px;
  padding-left: 1em;
}

.info-grid {
  width: min(100%, 1400px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, #fff, rgba(247, 240, 234, 0.42));
}

.info-grid article {
  min-height: 300px;
  padding: 48px 38px;
  border-right: 1px solid var(--line);
  position: relative;
}

.info-grid article::before {
  content: "";
  position: absolute;
  top: 48px;
  left: 38px;
  width: 28px;
  height: 2px;
  background: var(--brown);
}

.info-grid article:last-child {
  border-right: 0;
}

.info-grid h3 {
  margin: 22px 0 22px;
  font-size: 22px;
  line-height: 1.45;
  color: var(--navy);
}

.check-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.check-list li {
  padding-left: 24px;
  position: relative;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 8px;
  height: 8px;
  background: var(--blue);
  box-shadow: 8px 0 0 var(--brown);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  background: #fff;
}

.faq-grid article {
  padding: 28px 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid transparent;
}

.faq-grid article:last-child {
  border-right: 0;
}

.faq-grid h3 {
  margin: 0 0 10px;
  font-size: 15px;
  color: var(--navy);
}

.contact-cta {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  padding: 70px 72px;
  background:
    radial-gradient(circle at 82% 28%, rgba(168, 102, 50, 0.34), transparent 24%),
    linear-gradient(135deg, var(--navy-dark), var(--navy) 48%, #0d3c91);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.contact-cta::before {
  content: "";
  position: absolute;
  left: 72px;
  right: 72px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
}

.contact-cta > div {
  width: min(100%, 1400px);
}

.contact-cta h2 {
  margin: 0 0 14px;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 500;
}

.contact-cta p {
  margin: 0;
  color: rgba(255,255,255,0.76);
  line-height: 1.9;
}

.footer {
  width: min(100%, 1400px);
  margin: 0 auto;
  padding: 52px 72px 34px;
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  gap: 40px;
  position: relative;
  background:
    linear-gradient(180deg, #fff, rgba(238, 245, 255, 0.72));
}

.footer p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 34px;
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--navy);
}

.socials {
  display: flex;
  gap: 14px;
}

.socials a {
  width: 46px;
  height: 46px;
  border: 1px solid rgba(13, 94, 215, 0.2);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: rgba(255, 255, 255, 0.72);
}

.copyright {
  grid-column: 1 / -1;
  text-align: center;
  margin: 10px 0 0;
}

.fade-section {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .site-header {
    height: 74px;
    padding: 0 20px;
  }

  .nav {
    display: none;
  }

  .logo {
    font-size: 16px;
  }

  .logo-image {
    width: 68px;
    height: 58px;
  }

  .footer-logo-image {
    width: 118px;
    height: 128px;
  }

  .btn-blue {
    min-width: 96px;
    height: 36px;
    padding: 0 18px;
    font-size: 12px;
  }

  .hero {
    height: 620px;
    min-height: 620px;
  }

  .hero-content {
    padding: 0 28px;
    align-self: flex-end;
    padding-bottom: 92px;
  }

  .hero h1 {
    font-size: 52px;
    margin-bottom: 36px;
  }

  .hero-lead {
    font-size: 18px;
  }

  .concept {
    background: linear-gradient(180deg, #fff 0%, #fff 56%, rgba(238, 245, 255, 0.8) 56%);
  }

  .section-grid,
  .price-grid,
  .contact-cta,
  .footer {
    grid-template-columns: 1fr;
  }

  .section-text,
  .service,
  .flow,
  .price,
  .faq,
  .contact-cta,
  .footer {
    padding-left: 28px;
    padding-right: 28px;
  }

  .section-text {
    margin: 0;
    padding-top: 64px;
    padding-bottom: 52px;
  }

  .image-panel {
    min-height: 260px;
  }

  .service-grid,
  .flow-grid,
  .info-grid,
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .service-grid article,
  .flow-grid article,
  .info-grid article,
  .faq-grid article {
    border-right: 1px solid rgba(13, 94, 215, 0.12);
    border-bottom: 1px solid rgba(13, 94, 215, 0.12);
  }

  .flow-grid article {
    padding: 34px 28px 28px;
  }

  .flow-grid article + article {
    padding-left: 28px;
  }

  .price-card {
    padding: 32px;
    min-height: 260px;
  }

  .info-grid article {
    min-height: auto;
    padding: 40px 28px;
  }

  .info-grid article::before {
    top: 38px;
    left: 28px;
  }

  .info-grid h3 {
    margin-top: 22px;
  }

  .contact-cta {
    gap: 32px;
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .contact-cta::before {
    left: 28px;
    right: 28px;
  }

  .btn-large {
    width: 100%;
    min-width: 0;
  }

  .footer {
    gap: 28px;
  }
}