:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #667085;
  --line: #d7dde4;
  --soft: #f4f7f8;
  --paper: #ffffff;
  --aqua: #0f766e;
  --aqua-deep: #123c3a;
  --blue: #1d4ed8;
  --shadow: 0 24px 80px rgba(17, 24, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter, "Noto Sans SC", "Noto Sans JP", "Hiragino Sans", system-ui,
    sans-serif;
}

body.has-language-gate {
  overflow: hidden;
}

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

button {
  font: inherit;
  cursor: pointer;
}

.language-gate {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 24px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(7, 18, 28, 0.86), rgba(7, 18, 28, 0.54)),
    url("./assets/hero-trade.png?v=20260708-2") center / cover;
}

.language-gate.is-hidden {
  display: none;
}

.language-panel {
  width: min(560px, 100%);
}

.language-panel h1 {
  margin-bottom: 18px;
  font-size: clamp(42px, 7vw, 72px);
}

.language-panel h1 span,
.language-panel h1 small,
.language-panel p span,
.language-panel p small {
  display: block;
}

.language-panel h1 small {
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.72);
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 800;
}

.language-panel p:not(.eyebrow) {
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
  line-height: 1.8;
}

.language-panel p small {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.language-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.language-actions button {
  min-height: 58px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 16px;
  font-weight: 900;
  backdrop-filter: blur(12px);
}

.language-actions button:hover {
  background: #fff;
  color: var(--ink);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: 76px;
  padding: 0 clamp(20px, 5vw, 72px);
  color: #fff;
  transition:
    background 180ms ease,
    color 180ms ease,
    border-color 180ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(215, 221, 228, 0.8);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 8px;
  font-size: 21px;
  font-weight: 800;
}

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

.brand strong {
  font-size: 15px;
  letter-spacing: 0;
}

.brand small {
  margin-top: 2px;
  color: currentColor;
  font-size: 11px;
  opacity: 0.7;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 40px);
  margin-left: auto;
  font-size: 13px;
  font-weight: 700;
}

.nav a {
  opacity: 0.78;
}

.nav a:hover {
  opacity: 1;
}

.language-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  padding: 3px;
  border: 1px solid currentColor;
  border-radius: 8px;
}

.language-switch button {
  min-height: 32px;
  border: 0;
  border-radius: 6px;
  padding: 0 10px;
  background: transparent;
  color: currentColor;
  font-size: 12px;
  font-weight: 800;
  opacity: 0.72;
}

.language-switch button.active {
  background: currentColor;
  color: var(--ink);
  opacity: 1;
}

.site-header.is-scrolled .language-switch button.active {
  color: #fff;
}

.header-action,
.primary-link,
.secondary-link,
.contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  padding: 0 18px;
  font-size: 13px;
  font-weight: 800;
}

.header-action {
  border: 1px solid currentColor;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 108px clamp(20px, 7vw, 92px) 80px;
  color: #fff;
}

.hero-image,
.hero-scrim {
  position: absolute;
  inset: 0;
}

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

.hero-scrim {
  background:
    linear-gradient(90deg, rgba(7, 18, 28, 0.82) 0%, rgba(7, 18, 28, 0.56) 42%, rgba(7, 18, 28, 0.1) 100%),
    linear-gradient(0deg, rgba(7, 18, 28, 0.26), rgba(7, 18, 28, 0.12));
}

.hero-content {
  position: relative;
  max-width: 720px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--aqua);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #b8fff3;
}

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

h1 {
  max-width: 680px;
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 88px);
  line-height: 1.03;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.9;
}

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

.primary-link {
  background: #fff;
  color: var(--ink);
}

.secondary-link {
  border: 1px solid rgba(255, 255, 255, 0.72);
  color: #fff;
}

.section-band,
.services,
.advantages,
.company,
.contact {
  padding: clamp(72px, 9vw, 124px) clamp(20px, 7vw, 92px);
}

.section-band {
  background: var(--soft);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(260px, 1fr);
  gap: clamp(28px, 6vw, 92px);
  align-items: start;
}

.intro h2,
.services h2,
.company h2,
.contact h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.12;
  letter-spacing: 0;
}

.intro p,
.section-head p,
.statement p,
.contact p {
  color: var(--muted);
  font-size: 17px;
  line-height: 2;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  align-items: end;
  margin-bottom: 34px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 28px;
}

.section-head p {
  max-width: 440px;
  margin-bottom: 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.service-item {
  min-height: 300px;
  padding: clamp(24px, 4vw, 38px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}

.service-item span {
  color: var(--aqua);
  font-weight: 900;
}

.service-item h3 {
  margin: 56px 0 18px;
  font-size: 24px;
  letter-spacing: 0;
}

.service-item p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.85;
}

.service-emphasis {
  background: var(--ink);
  color: #fff;
}

.service-emphasis p {
  color: rgba(255, 255, 255, 0.76);
}

.statement {
  background: var(--aqua-deep);
}

.statement p {
  max-width: 980px;
  margin: 0;
  color: #eefcf9;
  font-size: clamp(25px, 4vw, 48px);
  line-height: 1.45;
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.advantage-list div {
  min-height: 118px;
  display: flex;
  align-items: end;
  padding: 24px;
  background: #fff;
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
}

.compact {
  margin-bottom: 10px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--line);
}

.process-list li {
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
  font-size: 18px;
  font-weight: 800;
}

.process-list span {
  color: var(--aqua);
  font-size: 13px;
}

.process-list em {
  font-style: normal;
}

.company {
  background: #fff;
}

.profile-list {
  margin: 40px 0 0;
  border-top: 1px solid var(--line);
}

.profile-list div {
  display: grid;
  grid-template-columns: minmax(120px, 220px) minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.profile-list dt {
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.profile-list dd {
  margin: 0;
  line-height: 1.8;
}

.contact {
  display: flex;
  justify-content: space-between;
  gap: 36px;
  align-items: center;
  background: var(--soft);
}

.contact p {
  max-width: 560px;
  margin: 18px 0 0;
}

.contact-button {
  min-width: 220px;
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 7vw, 92px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 820px) {
  .site-header {
    height: 68px;
    gap: 14px;
  }

  .nav {
    display: none;
  }

  .language-switch {
    margin-left: auto;
  }

  .header-action {
    min-height: 38px;
    padding: 0 14px;
  }

  .hero {
    min-height: 88vh;
    padding-top: 92px;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgba(7, 18, 28, 0.84), rgba(7, 18, 28, 0.46)),
      linear-gradient(0deg, rgba(7, 18, 28, 0.28), rgba(7, 18, 28, 0.18));
  }

  .intro-grid,
  .section-head,
  .contact {
    display: grid;
    grid-template-columns: 1fr;
  }

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

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

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

  .service-item {
    min-height: 240px;
  }
}

@media (max-width: 560px) {
  .brand small {
    display: none;
  }

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

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  h1 {
    font-size: 43px;
  }

  .hero-copy,
  .intro p,
  .section-head p,
  .statement p,
  .contact p {
    font-size: 15px;
  }

  .profile-list div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .contact-button {
    width: 100%;
  }

  .language-actions {
    grid-template-columns: 1fr;
  }

  .advantage-list,
  .process-list {
    grid-template-columns: 1fr;
  }

  .footer {
    display: grid;
  }
}