:root {
  --navy: #071a2f;
  --deep: #071321;
  --ink: #f4f8fb;
  --muted: #bdd0df;
  --yellow: #ffc845;
  --white: #ffffff;
  --panel: rgba(255, 255, 255, 0.92);
  --line: rgba(255, 255, 255, 0.14);
  --dark-line: rgba(7, 26, 47, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--navy);
  font-family: "Yu Gothic", "Meiryo", system-ui, sans-serif;
}

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

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

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

p {
  font-size: 16px;
  line-height: 1.9;
  font-weight: 700;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 72px;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 19, 33, 0.96);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 290px;
}

.brand-mark {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--yellow);
  color: var(--deep);
  font-size: 24px;
  font-weight: 950;
  box-shadow: 0 0 0 8px rgba(255, 200, 69, 0.12);
}

.brand strong {
  display: block;
  font-size: 29px;
  line-height: 1;
  font-weight: 950;
}

.brand small {
  display: block;
  margin-top: 7px;
  color: #d8e3eb;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  font-weight: 950;
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 950;
  white-space: nowrap;
}

.header-cta,
.button.primary {
  background: var(--yellow);
  color: var(--deep);
  box-shadow: 0 14px 34px rgba(255, 200, 69, 0.24);
}

.button.ghost {
  border: 2px solid rgba(255, 255, 255, 0.82);
  color: var(--deep);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.22);
}

.hero {
  position: relative;
  min-height: 730px;
  display: grid;
  grid-template-columns: 1.03fr 0.97fr;
  gap: 50px;
  padding: 88px 72px 72px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(7, 26, 47, 0.98) 0%, rgba(7, 26, 47, 0.9) 48%, rgba(7, 26, 47, 0.34) 100%),
    url("assets/hero-electric.png") center / cover no-repeat;
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 120px;
  background: linear-gradient(180deg, transparent, var(--navy));
}

.hero-copy,
.contact-panel {
  position: relative;
  z-index: 1;
}

.hero-copy {
  align-self: center;
  max-width: 760px;
}

.eyebrow {
  margin-bottom: 18px;
  color: var(--yellow);
  font-size: 14px;
  font-weight: 950;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(54px, 6.6vw, 92px);
  line-height: 1.08;
  font-weight: 950;
  letter-spacing: 0;
}

h1 span {
  color: var(--yellow);
}

h2 {
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.17;
  font-weight: 950;
}

h3 {
  font-size: 24px;
  line-height: 1.35;
  font-weight: 950;
}

.hero-lead {
  margin-top: 28px;
  max-width: 680px;
  color: #e8f1f8;
  font-size: 20px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.contact-panel {
  align-self: center;
  padding: 36px 38px;
  border-radius: 10px;
  color: #0c1e32;
  background: var(--panel);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.32);
}

.contact-panel .eyebrow {
  color: #d99d00;
}

.contact-panel h2 {
  font-size: 31px;
}

.contact-panel dl,
.company-panel dl {
  margin: 28px 0 0;
}

.contact-panel div,
.company-panel div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding: 17px 0;
  border-top: 1px solid var(--dark-line);
}

dt {
  color: #536477;
  font-weight: 950;
}

dd {
  margin: 0;
  font-weight: 900;
}

.section {
  padding: 96px 72px;
}

.section-heading {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 54px;
  align-items: end;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
}

.service-section {
  position: relative;
  z-index: 2;
  background: var(--navy);
}

.service-section .section-heading {
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
  max-width: none;
}

.service-section .section-heading h2 {
  white-space: nowrap;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 48px;
}

.service-card {
  min-height: 230px;
  padding: 0 0 30px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  overflow: hidden;
}

.service-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.service-card span {
  display: block;
  margin: 26px 32px 22px;
  color: var(--yellow);
  font-size: 14px;
  font-weight: 950;
  letter-spacing: 0.16em;
}

.service-card h3,
.service-card p {
  margin-left: 32px;
  margin-right: 32px;
}

.service-card p {
  margin-top: 14px;
  color: #c9d9e5;
}

.strength-section {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  min-height: 640px;
  background: #f4f7fb;
  color: #0c1e32;
}

.strength-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.strength-copy {
  align-self: center;
  padding: 84px 72px;
}

.strength-copy .eyebrow,
.company-section .eyebrow {
  color: #d99d00;
}

.strength-copy p:not(.eyebrow) {
  margin-top: 24px;
  color: #405364;
}

.strength-list {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}

.strength-list div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 20px 22px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(12, 30, 50, 0.08);
}

.strength-list b {
  color: #d99d00;
  letter-spacing: 0.12em;
}

.strength-list span {
  font-weight: 950;
}

.company-section {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 52px;
  align-items: center;
  background: #fff;
  color: #0c1e32;
}

.company-main p:not(.eyebrow) {
  margin-top: 24px;
  color: #405364;
  max-width: 640px;
}

.company-main .button {
  margin-top: 34px;
}

.company-panel {
  padding: 34px 38px;
  border: 1px solid rgba(12, 30, 50, 0.13);
  border-radius: 10px;
  background: #f8fbfd;
  box-shadow: 0 24px 70px rgba(12, 30, 50, 0.08);
}

.map-section {
  height: 360px;
  background: #fff;
}

.map-section iframe {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
  filter: saturate(0.9);
}

.site-footer {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 72px;
  background: var(--deep);
  color: #fff;
}

.site-footer strong {
  font-size: 24px;
  font-weight: 950;
}

.site-footer a {
  color: var(--yellow);
  font-weight: 950;
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 86px;
    padding: 14px 22px;
    flex-wrap: wrap;
  }

  .brand {
    min-width: auto;
  }

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    overflow-x: auto;
  }

  .header-cta {
    min-height: 48px;
    padding: 0 18px;
  }

  .hero,
  .strength-section,
  .company-section,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 56px 22px 64px;
  }

  h1 {
    font-size: 54px;
  }

  .contact-panel {
    align-self: stretch;
  }

  .section {
    padding: 68px 22px;
  }

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

  .strength-image {
    min-height: 320px;
  }

  .strength-copy {
    padding: 58px 22px;
  }

  .site-footer {
    padding: 28px 22px;
    gap: 16px;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 620px) {
  .brand strong {
    font-size: 24px;
  }

  .brand small {
    display: none;
  }

  h1 {
    font-size: 44px;
  }

  h2 {
    font-size: 32px;
  }

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

  .button,
  .header-cta {
    width: 100%;
  }

  .hero-actions {
    width: 100%;
  }

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