:root {
  --bg: #ffffff;
  --surface: #f7f8fb;
  --text: #2f3640;
  --muted: #6b7280;
  --border: rgba(15, 23, 42, 0.12);

  --accent1: #4f8cff;
  --accent2: #7b5cff;

  --radius: 14px;
  --radius-lg: 18px;

  --shadow: 0 12px 30px rgba(17, 24, 39, 0.08);
  --shadow-soft: 0 10px 22px rgba(17, 24, 39, 0.06);

  --container: 1120px;

  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
}

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

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: --var;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
}

/* Typography (same for JA/EN) */
h1,
h2,
h3 {
  margin: 0 0 8px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

h1 {
  font-size: 2.125rem; /* 34px */
  line-height: 1.15;
}

h2 {
  font-size: 1.625rem; /* 26px */
}

h3 {
  font-size: 1.25rem; /* 20px */
}

p {
  margin: 0 0 10px;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
  padding: 10px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-image {
  height: 34px;
  width: auto;
  display: block;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.95rem;
}

.nav a {
  text-decoration: none;
  color: #4b5563;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: #111827;
  border-bottom-color: rgba(79, 140, 255, 0.35);
}

.nav-cta {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(123, 92, 255, 0.35);
  background: rgba(123, 92, 255, 0.06);
  color: #111827;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--muted);
  white-space: nowrap;
}

.lang-link {
  text-decoration: none;
  color: var(--muted);
}

.lang-link.active {
  color: #111827;
  font-weight: 600;
}

.lang-sep {
  opacity: 0.7;
}

@media (max-width: 860px) {
  .nav {
    display: none;
  }
}

/* Hero */
.hero {
  padding: 56px 0 28px;
  background:
    radial-gradient(800px 220px at 20% 10%, rgba(79, 140, 255, 0.10), transparent 60%),
    radial-gradient(700px 200px at 80% 0%, rgba(123, 92, 255, 0.10), transparent 60%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 26px;
  align-items: flex-start;
}

.kicker {
  margin: 0 0 10px;
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6b7280;
}

.lead {
  margin: 0 0 18px;
  color: #4b5563;
  max-width: 65ch;
}

.accent {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  -webkit-background-clip: text;
  color: transparent;
}

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

/* Hero card */
.hero-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 18px 18px 16px;
}

.hero-card h2 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.bullets {
  margin: 0;
  padding: 0;
  list-style: none;
  color: #4b5563;
  font-size: 0.95rem;
}

.bullets li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 6px;
}

.bullets li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent1);
}

.meta {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 8px;
  font-size: 0.9rem;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.meta-label {
  color: var(--muted);
}

.meta-value {
  color: #111827;
  font-weight: 500;
}

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Sections */
.section {
  padding: 52px 0;
}

.section-alt {
  padding: 52px 0;
  background: var(--surface);
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.section-title {
  margin-bottom: 10px;
}

.section-intro {
  margin: 0 0 26px;
  color: var(--muted);
  max-width: 70ch;
}

/* Layout */
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: flex-start;
}

@media (max-width: 900px) {
  .two-col {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Boxes */
.box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 16px 16px 14px;
}

.box h3 {
  margin-bottom: 10px;
}

/* Lists */
.list {
  margin: 0;
  padding-left: 18px;
  color: #4b5563;
}

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

/* Cards grid */
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 16px 16px 14px;
}

.card h3 {
  margin-bottom: 8px;
}

.card p {
  color: #4b5563;
  font-size: 0.95rem;
}

.mini {
  margin: 0;
  padding-left: 18px;
  color: #4b5563;
  font-size: 0.93rem;
}

/* Steps */
.steps {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.steps li {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  box-shadow: var(--shadow-soft);
}

.step-title {
  display: inline-block;
  margin-bottom: 6px;
  font-weight: 650;
  letter-spacing: 0.02em;
  color: #111827;
}

.steps p {
  margin: 0;
  color: #4b5563;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.08s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn.primary {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: #ffffff;
  box-shadow: 0 12px 26px rgba(79, 140, 255, 0.22);
}

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

.btn.ghost {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.16);
  color: #111827;
}

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

/* Company info table */
.info {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.info th,
.info td {
  padding: 8px 0;
  vertical-align: top;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.info th {
  width: 110px;
  color: var(--muted);
  font-weight: 500;
}

/* Contact */
.contact-actions {
  margin-top: 10px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 16px 0 22px;
  background: #ffffff;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-sub {
  opacity: 0.9;
}

@media (max-width: 640px) {
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}