:root {
  --blue-900: #132b47;
  --blue-800: #1e3a5f;
  --teal-500: #24b6bf;
  --teal-700: #117f89;
  --ink: #162033;
  --muted: #687486;
  --line: #dbe4ee;
  --soft: #f4f7fa;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(20, 42, 71, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  line-height: 1.75;
  background: var(--white);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 15px clamp(20px, 5vw, 64px);
  color: var(--ink);
  transition: background 180ms ease, box-shadow 180ms ease, color 180ms ease;
}
.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 36px rgba(19, 43, 71, 0.12);
  backdrop-filter: blur(16px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: 172px;
  min-width: 148px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}
.site-header.is-scrolled .brand {
  opacity: 1;
  pointer-events: auto;
}
.brand-logo {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 1px 2px rgba(255, 255, 255, 0.7));
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--teal-500), #8fe3d6);
  color: var(--blue-900);
  font-weight: 800;
}
.brand strong, .brand small { display: block; line-height: 1.1; }
.brand small { opacity: 0.72; font-size: 12px; }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 24px);
  font-size: 14px;
  font-weight: 700;
}
.site-nav a { opacity: 0.9; }
.site-nav a:hover { opacity: 1; color: var(--teal-500); }
.nav-cta {
  padding: 8px 14px;
  color: var(--blue-900);
  border: 1px solid rgba(19, 43, 71, 0.3);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
}
@media (min-width: 901px) {
  .site-header:not(.is-scrolled) .site-nav a {
    color: rgba(255, 255, 255, 0.92);
    text-shadow: 0 1px 8px rgba(8, 18, 32, 0.42);
  }
  .site-header:not(.is-scrolled) .site-nav a:hover {
    color: var(--teal-500);
  }
  .site-header:not(.is-scrolled) .site-nav .nav-cta {
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.56);
    background: rgba(19, 43, 71, 0.24);
  }
}
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 8px;
  color: var(--blue-800);
  background: rgba(255, 255, 255, 0.3);
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 84vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}
.hero-picture, .hero-image, .hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-image { object-fit: cover; }
.hero-overlay {
  background:
    linear-gradient(180deg, rgba(244, 247, 250, 0) 0, rgba(244, 247, 250, 0) 88px, rgba(15, 33, 55, 0.66) 150px, rgba(13, 33, 55, 0.36) 100%),
    linear-gradient(90deg, rgba(12, 24, 42, 0.18) 0%, rgba(13, 33, 55, 0.48) 44%, rgba(13, 33, 55, 0.08) 100%),
    linear-gradient(0deg, rgba(19, 43, 71, 0.34), rgba(19, 43, 71, 0));
}
.hero-content {
  position: relative;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 106px 0 48px;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--teal-500);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}
.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: 0;
}
.hero-lead {
  max-width: 680px;
  margin: 24px 0 0;
  font-size: clamp(17px, 2vw, 20px);
  color: rgba(255, 255, 255, 0.88);
}
.hero-actions, .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 800;
}
.button.primary {
  color: var(--blue-900);
  background: var(--teal-500);
}
.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.08);
}
.hero-stats {
  margin-top: 30px;
  padding: 0;
}
.hero-stats div {
  min-width: 150px;
  padding: 18px 20px;
  border-left: 2px solid var(--teal-500);
  background: rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(12px);
}
.hero-stats dt {
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
}
.hero-stats dd {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 92px 0;
}
.intro {
  padding-top: 36px;
}
.band {
  width: 100%;
  max-width: none;
  padding-inline: max(20px, calc((100% - 1120px) / 2));
  background: var(--soft);
}
.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}
.section-heading h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}
.section-heading p:last-child {
  color: var(--muted);
}
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 32px;
  align-items: stretch;
}
.intro-copy {
  display: grid;
  align-content: start;
  gap: 16px;
}
.intro-copy p {
  margin: 0;
  font-size: 18px;
}
.consult-card {
  display: grid;
  align-content: start;
  gap: 18px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%);
  box-shadow: 0 8px 28px rgba(19, 43, 71, 0.06);
}
.consult-card h3 {
  margin: 0;
  color: var(--blue-800);
  font-size: 22px;
  line-height: 1.35;
}
.consult-card ul {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.consult-card li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
}
.consult-card li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--teal-500);
  content: "";
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.service-card, .strength-layout article {
  min-height: 260px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 28px rgba(19, 43, 71, 0.06);
}
.service-card.wide { grid-column: auto; }
.icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 24px;
  border-radius: 8px;
  color: var(--blue-900);
  background: #bdf1eb;
  font-weight: 900;
}
.service-card h3, .strength-layout h3 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.35;
}
.service-card p, .strength-layout p { margin: 0; color: var(--muted); }

.strength-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.strength-layout article {
  min-height: 330px;
  border-top: 4px solid var(--teal-500);
}
.strength-layout ul {
  display: grid;
  gap: 8px;
  padding: 18px 0 0;
  margin: 20px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.strength-layout li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}
.strength-layout li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--teal-500);
  content: "";
}

.scale-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 42px;
}
.scale-card {
  min-height: 150px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 28px rgba(19, 43, 71, 0.06);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}
.scale-card:hover {
  transform: translateY(-3px);
  border-color: rgba(36, 182, 191, 0.42);
  box-shadow: 0 14px 34px rgba(19, 43, 71, 0.1);
}
.scale-card span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}
.scale-card strong {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin-top: 16px;
  color: var(--blue-800);
  font-size: clamp(34px, 4vw, 46px);
  line-height: 1;
}
.scale-card small {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}
.works-subheading {
  margin: 0 0 20px;
}
.works-subheading h3 {
  margin: 0;
  color: var(--blue-800);
  font-size: 22px;
  line-height: 1.4;
}
.works-subheading p {
  margin: 6px 0 0;
  color: var(--muted);
}
.consult-examples {
  margin: 0 0 42px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 28px rgba(19, 43, 71, 0.06);
}
.consult-example-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 24px;
  padding: 18px 0 0;
  margin: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.consult-example-list li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.consult-example-list li::before {
  position: absolute;
  top: 0.74em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--teal-500);
  content: "";
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.work-card {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
  text-align: left;
  cursor: pointer;
  box-shadow: 0 8px 28px rgba(19, 43, 71, 0.06);
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.work-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.work-card span {
  color: var(--teal-700);
  font-size: 13px;
  font-weight: 900;
}
.work-card strong {
  display: block;
  margin-top: 16px;
  font-size: 20px;
  line-height: 1.45;
}

.company {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 42px;
  align-items: start;
}
.company-table {
  border-top: 1px solid var(--line);
}
.company-table div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.company-table dt { font-weight: 800; color: var(--blue-800); }
.company-table dd { margin: 0; color: var(--muted); }

.contact {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 42px;
  align-items: start;
}
.contact-list {
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}
.contact-area-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
}
.contact-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.contact-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.contact-form {
  display: grid;
  gap: 16px;
  padding: 30px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}
.contact-form label {
  display: grid;
  gap: 7px;
  font-weight: 800;
}
.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.contact-form input, .contact-form textarea {
  width: 100%;
  border: 1px solid #cbd7e4;
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--ink);
  font: inherit;
  background: #fbfdff;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: 3px solid rgba(36, 182, 191, 0.22);
  border-color: var(--teal-500);
}
.form-note {
  min-height: 24px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 14px clamp(20px, 5vw, 64px);
  color: var(--ink);
  background: #eef4f8;
  border-top: 1px solid var(--line);
}
.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  text-align: center;
}
.site-footer a {
  justify-self: end;
  color: var(--blue-800);
  font-size: 13px;
  font-weight: 700;
}
.footer-logo {
  justify-self: start;
  width: 148px;
  height: auto;
  max-width: 45vw;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  place-items: center;
  padding: 20px;
  background: rgba(9, 19, 32, 0.62);
}
.modal.is-open { display: grid; }
.modal-panel {
  width: min(560px, 100%);
  padding: 30px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}
.modal-close {
  float: right;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  font: inherit;
  cursor: pointer;
}
.modal-panel h3 {
  margin: 10px 0 12px;
  font-size: 28px;
}
.modal-panel p { margin: 0; color: var(--muted); }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute;
    top: 76px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    border-radius: 8px;
    color: var(--ink);
    background: var(--white);
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: flex; }
  .nav-cta { text-align: center; color: var(--blue-800); }
  .hero { min-height: 86vh; }
  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(244, 247, 250, 0) 0, rgba(244, 247, 250, 0) 86px, rgba(12, 24, 42, 0.7) 150px, rgba(12, 24, 42, 0.62) 100%),
      linear-gradient(90deg, rgba(12, 24, 42, 0.12), rgba(13, 33, 55, 0.34));
  }
  .intro-grid, .company, .contact {
    grid-template-columns: 1fr;
  }
  .service-grid, .works-grid, .scale-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .consult-example-list {
    grid-template-columns: 1fr;
  }
  .strength-layout { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .site-header { padding: 12px 18px; }
  .brand {
    width: 138px;
    min-width: auto;
  }
  .hero { min-height: 88vh; }
  .hero-content {
    width: min(100% - 32px, 1120px);
    padding-top: 96px;
    padding-bottom: 36px;
  }
  .hero h1 { font-size: 38px; }
  .hero h1 br { display: none; }
  .hero-actions .button { width: 100%; }
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    width: 100%;
  }
  .hero-stats div {
    min-width: 0;
    padding: 12px 10px;
  }
  .hero-stats dt { font-size: 22px; }
  .hero-stats dd { font-size: 11px; }
  .section {
    width: min(100% - 32px, 1120px);
    padding: 68px 0;
  }
  .band {
    width: 100%;
    padding-inline: 16px;
  }
  .service-grid, .works-grid {
    grid-template-columns: 1fr;
  }
  .work-card {
    min-height: 136px;
    padding: 20px;
  }
  .work-card strong {
    margin-top: 10px;
    font-size: 18px;
  }
  .scale-grid { gap: 10px; }
  .scale-card {
    min-height: 126px;
    padding: 18px;
  }
  .scale-card strong { font-size: 32px; }
  .consult-examples { padding: 22px; }
  .service-card.wide { grid-column: auto; }
  .company-table div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .contact-form { padding: 22px; }
  .site-footer {
    align-items: flex-start;
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .footer-logo {
    width: 150px;
    max-width: 100%;
  }
  .site-footer p {
    text-align: left;
  }
}