:root {
  --navy-950: #06224f;
  --navy-900: #0b2f68;
  --navy-800: #123f87;
  --blue-100: #e8f3ff;
  --blue-50: #f5faff;
  --green-50: #f1fbf7;
  --green-600: #12a66a;
  --green-500: #16bf7a;
  --orange-500: #ed7449;
  --ink: #172235;
  --muted: #607087;
  --line: #d9e6f2;
  --white: #fff;
  --radius: 12px;
  --shadow: 0 20px 56px rgba(16, 54, 100, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  background: #fff;
}

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

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(217, 230, 242, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  gap: 26px;
  min-height: 74px;
}

.header-inner {
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--navy-900);
}

.brand-logo {
  width: 112px;
  height: auto;
}

.header-nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
  color: var(--navy-900);
  font-size: 13px;
  font-weight: 800;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 22px;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  line-height: 1.35;
  text-align: center;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

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

.btn:focus-visible,
.header-nav a:focus-visible,
.footer-inner a:focus-visible,
.text-link:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(18, 166, 106, 0.35);
  outline-offset: 4px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--green-500), var(--green-600));
  box-shadow: 0 12px 26px rgba(18, 166, 106, 0.24);
}

.btn-outline {
  color: var(--orange-500);
  background: #fff;
  border-color: rgba(237, 116, 73, 0.55);
}

.btn-light {
  color: var(--navy-900);
  background: #fff;
}

.btn-small {
  min-height: 42px;
  padding: 8px 16px;
  font-size: 13px;
}

.hero {
  padding: 82px 0 86px;
  background:
    radial-gradient(circle at 84% 14%, rgba(22, 191, 122, 0.15), transparent 25%),
    linear-gradient(135deg, #fff 0%, var(--blue-50) 100%);
}

.hero-grid,
.two-column,
.project-grid,
.company-grid,
.cta-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 56px;
  align-items: center;
}

.eyebrow,
.section-label,
.service-kicker {
  margin: 0 0 12px;
  color: var(--green-600);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--navy-900);
  line-height: 1.4;
}

h1 {
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.28;
}

h1 span {
  color: var(--green-600);
}

h2 {
  font-size: clamp(28px, 3.6vw, 43px);
}

h3 {
  font-size: 21px;
}

.hero-lead,
.prose p,
.section-head p:not(.section-label),
.service-card > p:not(.service-kicker),
.approach-grid p,
.project-grid p,
.cta-panel p {
  color: var(--muted);
}

.hero-lead {
  margin: 24px 0 0;
  font-size: 17px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 20px 0 0;
  padding: 0;
  color: var(--navy-900);
  font-size: 13px;
  font-weight: 900;
  list-style: none;
}

.hero-points li {
  position: relative;
  padding-left: 18px;
}

.hero-points li::before {
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  content: "";
  background: var(--green-600);
  border-radius: 50%;
  transform: translateY(-50%);
}

.hero-visual {
  position: relative;
  padding: 20px 14px 34px 30px;
}

.hero-photo {
  margin: 0;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.hero-photo img {
  width: 100%;
  height: 390px;
  object-fit: cover;
  object-position: center;
}

.visual-note {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 17px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--green-600);
  border-radius: 10px;
  box-shadow: 0 15px 38px rgba(16, 54, 100, 0.13);
}

.visual-note small,
.visual-note strong {
  display: block;
}

.visual-note small {
  color: var(--green-600);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.visual-note strong {
  color: var(--navy-900);
}

.section {
  padding: 88px 0;
}

section[id] {
  scroll-margin-top: 82px;
}

.section-tint {
  background: var(--blue-50);
}

.section-soft {
  background:
    radial-gradient(circle at 10% 16%, rgba(22, 191, 122, 0.11), transparent 23%),
    var(--green-50);
}

.section-dark {
  color: #fff;
  background:
    radial-gradient(circle at 82% 20%, rgba(22, 191, 122, 0.2), transparent 28%),
    var(--navy-950);
}

.section-dark h2,
.section-dark p,
.section-dark .section-label {
  color: #fff;
}

.prose p {
  margin: 0 0 16px;
}

.trust-band {
  position: relative;
  z-index: 2;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.trust-grid div {
  position: relative;
  display: grid;
  gap: 2px;
  min-height: 116px;
  padding: 22px 24px 20px 72px;
  align-content: center;
  border-right: 1px solid var(--line);
}

.trust-grid div:first-child {
  border-left: 1px solid var(--line);
}

.trust-grid span {
  position: absolute;
  left: 22px;
  top: 24px;
  color: rgba(18, 166, 106, 0.3);
  font-size: 24px;
  font-weight: 900;
}

.trust-grid strong {
  color: var(--navy-900);
  font-size: 17px;
}

.trust-grid small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.message-box {
  margin-top: 24px;
  padding: 18px 20px;
  color: var(--navy-900);
  font-size: 18px;
  font-weight: 900;
  background: var(--blue-50);
  border-left: 5px solid var(--green-600);
  border-radius: 8px;
}

.about-photo {
  margin: 28px 0 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 14px 34px rgba(16, 54, 100, 0.11);
}

.about-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.section-head {
  max-width: 760px;
  margin: 0 auto 36px;
}

.centered {
  text-align: center;
}

.section-head p:not(.section-label) {
  margin: 10px 0 0;
}

.challenge-grid,
.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.challenge-grid article,
.strength-grid article {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.challenge-grid article {
  box-shadow: 0 14px 38px rgba(16, 54, 100, 0.05);
}

.challenge-grid span,
.strength-number {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--green-600);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.challenge-grid h3,
.strength-grid h3 {
  font-size: 20px;
}

.challenge-grid p,
.strength-grid p {
  margin: 10px 0 0;
  color: var(--muted);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  position: relative;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 14px 38px rgba(16, 54, 100, 0.07);
}

.service-card.featured {
  border-top: 5px solid var(--green-600);
}

.service-number {
  position: absolute;
  right: 20px;
  top: 16px;
  color: #d8e9f7;
  font-size: 34px;
  font-weight: 900;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--navy-800);
  background: var(--blue-100);
  border-radius: 50%;
}

.icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-kicker {
  margin-bottom: 4px;
  font-size: 11px;
}

.service-card > p:not(.service-kicker) {
  margin: 12px 0 0;
}

.service-list {
  margin: 18px 0 0;
  padding: 14px 0 0;
  color: #43536a;
  font-size: 14px;
  font-weight: 700;
  list-style: none;
  border-top: 1px solid var(--line);
}

.service-list li {
  position: relative;
  padding-left: 17px;
}

.service-list li + li {
  margin-top: 7px;
}

.service-list li::before {
  position: absolute;
  left: 0;
  top: 0.76em;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--green-600);
  border-radius: 50%;
  transform: translateY(-50%);
}

.service-note,
.flow-note {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.text-link {
  display: inline-flex;
  margin-top: 16px;
  color: var(--navy-800);
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.approach-grid article {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.approach-grid span {
  color: var(--green-600);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.approach-grid h3 {
  margin-top: 8px;
}

.approach-grid p {
  margin: 7px 0 0;
}

.project-card {
  padding: 30px;
  color: var(--navy-900);
  background: #fff;
  border-radius: var(--radius);
}

.project-visual {
  display: grid;
  gap: 16px;
}

.project-photo {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
}

.project-photo img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.project-card span {
  color: var(--green-600);
  font-size: 13px;
  font-weight: 900;
}

.project-card strong {
  display: block;
  margin-top: 8px;
  font-size: 25px;
  line-height: 1.55;
}

.project-card ul {
  margin: 18px 0 0;
  padding-left: 19px;
  color: var(--muted);
}

.project-grid .btn {
  margin-top: 18px;
}

.company-grid {
  grid-template-columns: 0.5fr 1.5fr;
  align-items: start;
}

.company-intro {
  margin: 18px 0 0;
  color: var(--muted);
}

.company-list {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.company-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  border-bottom: 1px solid var(--line);
}

.company-list div:last-child {
  border-bottom: 0;
}

.company-list dt,
.company-list dd {
  margin: 0;
  padding: 14px 16px;
}

.company-list dt {
  color: var(--navy-900);
  font-weight: 900;
  background: var(--blue-50);
}

.company-list dd {
  color: #34445b;
}

.company-list a {
  color: var(--navy-800);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 54px;
  align-items: start;
}

.faq-layout > div:first-child > p:not(.section-label) {
  margin: 14px 0 0;
  color: var(--muted);
}

.faq-list {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.faq-list details {
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
}

.faq-list details:last-child {
  border-bottom: 0;
}

.faq-list summary {
  position: relative;
  padding: 19px 38px 19px 0;
  color: var(--navy-900);
  font-weight: 900;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  right: 1px;
  top: 50%;
  color: var(--green-600);
  content: "+";
  font-size: 24px;
  line-height: 1;
  transform: translateY(-50%);
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  margin: -4px 0 18px;
  color: var(--muted);
}

.section-cta {
  background:
    radial-gradient(circle at 14% 20%, rgba(22, 191, 122, 0.13), transparent 28%),
    var(--blue-50);
}

.cta-panel {
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.cta-actions {
  display: grid;
  gap: 10px;
  justify-items: center;
}

.cta-actions span {
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  background: #fff;
  border-top: 1px solid var(--line);
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-left: auto;
  color: var(--navy-900);
  font-size: 13px;
  font-weight: 800;
}

.footer-inner > small {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 900px) {
  .header-nav {
    display: none;
  }

  .header-inner .btn {
    margin-left: auto;
  }

  .hero-grid,
  .two-column,
  .project-grid,
  .company-grid,
  .cta-panel,
  .faq-layout {
    grid-template-columns: 1fr;
  }

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

  .approach-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .faq-layout {
    gap: 26px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .container {
    width: calc(100% - 32px);
  }

  .header-inner {
    min-height: 72px;
  }

  .brand-logo {
    width: 96px;
  }

  .header-inner .btn {
    min-height: 38px;
    padding: 7px 12px;
    font-size: 12px;
  }

  .hero {
    padding: 55px 0 64px;
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 29px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-points {
    gap: 7px;
    flex-direction: column;
  }

  .hero-visual {
    padding: 4px 0 28px;
  }

  .hero-photo img {
    height: 255px;
  }

  .visual-note {
    left: 12px;
    right: 12px;
    padding: 14px 16px;
  }

  .section {
    padding: 62px 0;
  }

  section[id] {
    scroll-margin-top: 72px;
  }

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

  .trust-grid div,
  .trust-grid div:first-child {
    min-height: auto;
    padding: 15px 16px 15px 54px;
    border-right: 1px solid var(--line);
    border-left: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .trust-grid div:last-child {
    border-bottom: 0;
  }

  .trust-grid span {
    left: 16px;
    top: 16px;
    font-size: 20px;
  }

  .trust-grid strong {
    font-size: 15px;
  }

  .service-card,
  .challenge-grid article,
  .strength-grid article,
  .approach-grid article,
  .project-card,
  .cta-panel {
    padding: 22px;
  }

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

  .company-list div {
    grid-template-columns: 1fr;
  }

  .company-list dd {
    padding-top: 5px;
  }

  .company-list dt {
    padding-bottom: 5px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 18px 0;
  }

  .footer-inner nav {
    margin-left: 0;
  }
}