:root {
  --ink: #142033;
  --muted: #5e6878;
  --line: #dbe2ea;
  --paper: #ffffff;
  --soft: #f5f7fa;
  --blue: #114f8f;
  --blue-dark: #0d2f57;
  --green: #377b63;
  --gold: #c68d36;
  --shadow: 0 18px 48px rgba(20, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family: Arial, "Helvetica Neue", sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

body.lang-ja {
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, Arial, sans-serif;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1180px;
  min-height: 70px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 8px;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #2d3b4f;
  font-size: 14px;
  font-weight: 800;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.language-switch a,
.language-switch span {
  display: inline-grid;
  min-height: 32px;
  padding: 0 10px;
  place-items: center;
  border-radius: 6px;
  white-space: nowrap;
}

.language-switch [aria-current="page"] {
  color: #fff;
  background: var(--blue-dark);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 48px;
  align-items: center;
  max-width: 1180px;
  min-height: 650px;
  margin: 0 auto;
  padding: 86px 24px 96px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 12px;
  font-size: clamp(46px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-heading {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(32px, 4vw, 52px);
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  font-size: 21px;
  line-height: 1.2;
}

p {
  color: var(--muted);
}

.lead {
  max-width: 650px;
  font-size: 22px;
}

.sublead {
  max-width: 600px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 900;
  text-align: center;
}

.button.primary {
  color: #fff;
  background: var(--blue);
}

.button.secondary {
  color: var(--blue-dark);
  background: #fff;
  border-color: #bdcad8;
}

.hero-panel,
.card,
.work-card,
.steps article,
.company-card,
.contact-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-panel {
  display: grid;
  gap: 14px;
  padding: 24px;
}

.hero-panel div {
  padding: 20px;
  background: #f8fafc;
  border: 1px solid #e6edf4;
  border-radius: 8px;
}

.hero-panel span,
.card-number,
.steps span {
  display: inline-grid;
  min-width: 34px;
  height: 30px;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 900;
}

.hero-panel strong {
  display: block;
  margin-top: 10px;
  font-size: 20px;
}

.section,
.work-band,
.trust-section,
.company-contact {
  max-width: 1180px;
  margin: 0 auto;
  padding: 82px 24px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 30px;
}

.card-grid {
  display: grid;
  gap: 18px;
}

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

.card {
  min-height: 260px;
  padding: 24px;
}

.card h3 {
  margin-top: 18px;
}

.price-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.price-item {
  padding: 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: 8px;
}

.price-item span,
.price-item strong {
  display: block;
}

.price-item span {
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 900;
}

.price-item strong {
  margin: 5px 0 8px;
  font-size: 25px;
}

.price-item p,
.price-note {
  margin-bottom: 0;
}

.price-note {
  margin-top: 12px;
  font-size: 14px;
}

.concept-disclaimer {
  font-size: 14px;
}

.work-band {
  background: #eef3f8;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.work-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 34px;
  align-items: center;
  padding: 30px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.tags span {
  padding: 7px 10px;
  color: var(--blue-dark);
  background: #e8f1f9;
  border: 1px solid #cadceb;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 900;
}

.work-card h3 {
  margin-bottom: 6px;
  font-size: 34px;
}

.work-title,
.work-location {
  margin-bottom: 4px;
  color: var(--ink);
  font-weight: 900;
}

.browser-mockup {
  min-height: 280px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #cdd8e4;
  border-radius: 8px;
}

.browser-bar {
  display: flex;
  gap: 7px;
  padding: 12px;
  background: #edf2f7;
  border-bottom: 1px solid #d8e1ea;
}

.browser-bar span {
  width: 10px;
  height: 10px;
  background: #8ba0b7;
  border-radius: 50%;
}

.mock-hero {
  height: 118px;
  background:
    linear-gradient(90deg, rgba(17, 79, 143, 0.95), rgba(17, 79, 143, 0.55)),
    linear-gradient(135deg, #d8e7f5, #f8dfc4);
}

.mock-lines {
  display: grid;
  gap: 12px;
  padding: 22px;
}

.mock-lines span {
  display: block;
  height: 18px;
  background: #dbe5ef;
  border-radius: 5px;
}

.mock-lines span:nth-child(2) {
  width: 78%;
}

.mock-lines span:nth-child(3) {
  width: 48%;
  background: var(--gold);
}

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

.steps article {
  padding: 22px;
  box-shadow: none;
}

.steps h3 {
  margin: 16px 0 8px;
}

.trust-section {
  padding-top: 30px;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.trust-list span {
  padding: 11px 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 800;
}

.company-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 22px;
}

.company-card,
.contact-card {
  padding: 30px;
}

.company-card p:last-child {
  margin-bottom: 0;
}

.company-endorsement {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
}

.company-logo {
  display: block;
  width: 64px;
  height: 64px;
  flex: 0 0 auto;
  object-fit: contain;
}

.company-endorsement h2 {
  margin-bottom: 6px;
}

.company-subtitle {
  margin-bottom: 0;
  color: var(--ink);
  font-weight: 800;
}

.text-link,
.contact-email,
.contact-phone {
  color: var(--blue);
  font-weight: 900;
}

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

.contact-email,
.contact-phone {
  margin-bottom: 12px;
  overflow-wrap: anywhere;
  font-size: 20px;
}

.contact-card .button {
  margin-top: 12px;
  margin-bottom: 14px;
}

.contact-note {
  margin-bottom: 10px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 24px;
  color: #d8e2ef;
  background: var(--blue-dark);
}

.footer div {
  display: grid;
  gap: 6px;
}

.footer span {
  color: #aebfd1;
}

.footer a {
  font-weight: 800;
}

@media (min-width: 1440px) {
  .hero {
    min-height: 700px;
  }
}

@media (max-width: 980px) {
  .hero,
  .work-card,
  .company-contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 70px;
  }

  .hero-panel,
  .browser-mockup {
    max-width: 620px;
  }

  .card-grid.three,
  .steps,
  .price-summary {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav {
    padding: 0 16px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    right: 16px;
    left: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 13px;
  }

  .language-switch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-top: 6px;
  }

  .language-switch a,
  .language-switch span {
    padding: 0 12px;
  }

  .hero,
  .section,
  .work-band,
  .trust-section,
  .company-contact {
    padding-right: 16px;
    padding-left: 16px;
  }

  .hero {
    padding-top: 52px;
    padding-bottom: 68px;
  }

  h1 {
    font-size: 38px;
  }

  .lead {
    font-size: 19px;
  }

  .actions {
    display: grid;
    width: 100%;
  }

  .button {
    width: 100%;
  }

  .work-card,
  .company-card,
  .contact-card {
    padding: 22px;
  }

  .company-endorsement {
    align-items: flex-start;
    gap: 14px;
  }

  .company-logo {
    width: 52px;
    height: 52px;
  }

  .card-grid.three,
  .steps,
  .price-summary {
    grid-template-columns: 1fr;
  }

  .footer {
    display: grid;
  }
}

@media (max-width: 430px) {
  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand strong {
    font-size: 15px;
  }

  .brand small {
    max-width: 160px;
  }

  h1 {
    font-size: 33px;
  }

  h2 {
    font-size: 28px;
  }

  .hero-panel,
  .card,
  .steps article {
    padding: 18px;
  }

  .browser-mockup {
    min-height: 230px;
  }

  .contact-email,
  .contact-phone {
    font-size: 18px;
  }

  .company-logo {
    width: 48px;
    height: 48px;
  }

  .lang-ja .brand small {
    max-width: 178px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

@media (max-width: 340px) {
  .nav {
    padding: 0 12px;
  }

  .brand small {
    max-width: 130px;
  }

  h1 {
    font-size: 30px;
  }

  h2 {
    font-size: 25px;
  }
}