:root {
  --paper: #f4f3ed;
  --paper-deep: #e9e7df;
  --ink: #13262d;
  --muted: #647177;
  --line: rgba(19, 38, 45, 0.18);
  --blue: #315ce8;
  --lime: #c8f064;
  --white: #ffffff;
  --radius: 28px;
  --max-width: 1240px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 8px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
}

.header-inner,
.hero,
.section,
.contact,
.site-footer {
  width: min(calc(100% - 64px), var(--max-width));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
}

.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--paper);
  background: var(--ink);
  border-radius: 50%;
  font-size: 15px;
  font-weight: 800;
}

.brand-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.nav-list {
  display: flex;
  gap: 40px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-list a {
  position: relative;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.nav-list a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  content: "";
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: center;
  min-height: calc(100vh - 89px);
  padding-block: 80px;
}

.eyebrow,
.section-index,
.panel-topline,
.card-en,
.panel-note {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.eyebrow {
  display: flex;
  gap: 14px;
  align-items: center;
  margin: 0 0 36px;
}

.eyebrow::before {
  width: 36px;
  height: 2px;
  content: "";
  background: var(--blue);
}

.hero h1 {
  margin: 0;
  font-size: clamp(52px, 7.4vw, 104px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.065em;
}

.hero-lead {
  max-width: 670px;
  margin: 42px 0 30px;
  color: #3d5057;
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 2;
}

.text-link {
  display: inline-flex;
  gap: 20px;
  align-items: center;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.text-link span {
  color: var(--blue);
  font-size: 20px;
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translate(4px, 4px);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 30px;
  color: var(--paper);
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: 0 30px 70px rgba(19, 38, 45, 0.17);
}

.hero-panel::after {
  position: absolute;
  right: -80px;
  bottom: -90px;
  width: 240px;
  height: 240px;
  content: "";
  border: 1px solid rgba(200, 240, 100, 0.35);
  border-radius: 50%;
  box-shadow: 0 0 0 40px rgba(200, 240, 100, 0.05), 0 0 0 80px rgba(200, 240, 100, 0.03);
}

.panel-topline {
  display: flex;
  justify-content: space-between;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  color: #b9c3c7;
}

.status {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  color: var(--lime);
}

.status-dot {
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(200, 240, 100, 0.12);
}

.process-list {
  padding: 20px 0 0;
  margin: 0;
  list-style: none;
}

.process-list li {
  display: grid;
  grid-template-columns: 36px 1fr;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.process-number {
  grid-row: 1 / span 2;
  color: var(--lime);
  font-size: 11px;
  font-weight: 800;
}

.process-list strong {
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0.08em;
}

.process-list small {
  color: #aeb9bd;
  font-size: 12px;
}

.panel-note {
  position: relative;
  z-index: 1;
  margin: 54px 0 0;
  color: #aeb9bd;
  line-height: 1.7;
}

.section {
  padding-block: clamp(100px, 12vw, 170px);
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 64px;
  align-items: end;
  margin-bottom: 64px;
}

.section-index {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--blue);
}

.section-index.light {
  color: var(--lime);
}

.section-heading h2,
.about h2,
.contact h2 {
  margin: 0;
  font-size: clamp(40px, 5.4vw, 72px);
  line-height: 1.25;
  letter-spacing: -0.045em;
}

.section-heading > p:last-child {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
}

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

.service-card {
  display: flex;
  min-height: 390px;
  flex-direction: column;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 200ms ease, border-color 200ms ease;
}

.service-card:hover {
  border-color: rgba(49, 92, 232, 0.45);
  transform: translateY(-6px);
}

.service-card.featured {
  color: var(--paper);
  background: var(--blue);
  border-color: var(--blue);
}

.card-number {
  margin: 0 0 auto;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
}

.featured .card-number {
  color: var(--lime);
}

.service-card h3 {
  margin: 60px 0 18px;
  font-size: 24px;
  line-height: 1.4;
}

.service-card > p:not(.card-number, .card-en) {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.featured > p:not(.card-number, .card-en) {
  color: rgba(255, 255, 255, 0.78);
}

.card-en {
  margin: 38px 0 0;
  color: var(--muted);
}

.featured .card-en {
  color: rgba(255, 255, 255, 0.65);
}

.about {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(64px, 10vw, 150px);
  width: 100%;
  max-width: none;
  padding-inline: max(32px, calc((100vw - var(--max-width)) / 2));
  color: var(--paper);
  background: var(--ink);
}

.about-intro .section-index {
  margin-bottom: 38px;
}

.about-copy {
  padding-top: 64px;
}

.about-lead {
  margin: 0 0 32px;
  color: var(--white);
  font-size: clamp(20px, 2.1vw, 28px);
  font-weight: 700;
  line-height: 1.8;
}

.about-copy > p:not(.about-lead) {
  max-width: 650px;
  margin: 0;
  color: #afbbbf;
}

.principle-list {
  margin: 70px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.principle-list div {
  display: grid;
  grid-template-columns: 160px 1fr;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.principle-list dt {
  color: var(--lime);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.principle-list dd {
  margin: 0;
  color: #d8dfe1;
  font-size: 14px;
}

.company {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 80px;
}

.company-heading {
  display: block;
  margin: 0;
}

.company-heading .section-index {
  margin-bottom: 32px;
}

.company-list {
  margin: 0;
  border-top: 1px solid var(--ink);
}

.company-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.company-list dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.company-list dd {
  margin: 0;
}

.contact {
  padding: clamp(48px, 7vw, 88px);
  margin-bottom: 64px;
  color: var(--paper);
  background: var(--blue);
  border-radius: var(--radius);
}

.contact-row {
  display: flex;
  gap: 40px;
  align-items: flex-end;
  justify-content: space-between;
  margin-top: 44px;
}

.contact h2 {
  font-size: clamp(38px, 5vw, 68px);
}

.contact p:not(.section-index) {
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.78);
}

.contact-button {
  display: flex;
  width: min(100%, 270px);
  min-height: 86px;
  flex: 0 0 270px;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  color: var(--ink);
  background: var(--lime);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease;
}

.contact-button:hover {
  background: var(--white);
  transform: translateY(-4px);
}

.contact-button span:last-child {
  font-size: 22px;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 48px;
  align-items: center;
  padding-block: 40px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.copyright {
  letter-spacing: 0.05em;
}

a:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 90px;
  }

  .hero-panel {
    max-width: 560px;
  }

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

  .service-card {
    min-height: 330px;
  }

  .about,
  .company {
    grid-template-columns: 1fr;
  }

  .about-copy {
    padding-top: 0;
  }

  .contact-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .contact-button {
    flex-basis: auto;
  }
}

@media (max-width: 640px) {
  .header-inner,
  .hero,
  .section,
  .contact,
  .site-footer {
    width: min(calc(100% - 36px), var(--max-width));
  }

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

  .nav-list {
    gap: 18px;
  }

  .nav-list li:nth-child(2) {
    display: none;
  }

  .nav-list a {
    font-size: 11px;
  }

  .brand-name {
    font-size: 14px;
  }

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

  .hero {
    gap: 60px;
    padding-block: 70px;
  }

  .eyebrow {
    margin-bottom: 28px;
    font-size: 9px;
  }

  .hero h1 {
    font-size: clamp(45px, 14vw, 66px);
  }

  .hero-lead {
    margin-top: 32px;
  }

  .desktop-only {
    display: none;
  }

  .hero-panel {
    padding: 24px;
    border-radius: 22px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    margin-bottom: 42px;
  }

  .section-heading > p:last-child {
    margin-top: -8px;
  }

  .service-card {
    min-height: 310px;
    padding: 26px;
    border-radius: 22px;
  }

  .about {
    width: 100%;
    padding-inline: 18px;
  }

  .principle-list div,
  .company-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .company {
    gap: 48px;
  }

  .contact {
    padding: 38px 26px;
    margin-bottom: 36px;
    border-radius: 22px;
  }

  .contact br {
    display: none;
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}