/* ===== Reset & base ===== */
* { box-sizing: border-box; }

:root {
  --accent: #2B5AE8;
  --ink: #0F1D33;
  --ink-soft: #14233D;
  --text-body: #47566B;
  --text-muted: #8A98AC;
  --border: #E7EDF6;
  --border-soft: #EAF0F8;
  --tint-bg: #F5F8FD;
  --nav-height: 70px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  margin: 0;
  background: #FFFFFF;
  color: var(--ink);
  font-family: 'Noto Sans JP', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

input, textarea, button { font-family: inherit; }

input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent) !important;
}

button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

::selection { background: var(--accent); color: #fff; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 12px 20px;
  z-index: 1000;
  border-radius: 0 0 6px 0;
}
.skip-link:focus {
  left: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ===== Typography helpers ===== */
.accent { color: var(--accent); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 18px;
}
.eyebrow-line {
  width: 30px;
  height: 1px;
  background: var(--accent);
}
.eyebrow-line-sm { width: 24px; }
.eyebrow-text {
  font-family: 'Archivo', sans-serif;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #6B7A90;
}
.eyebrow-tag {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--accent);
}
.eyebrow-sub {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.h2 {
  font-weight: 900;
  font-size: 37px;
  line-height: 1.4;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--ink);
}

.lead {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 2;
  color: var(--text-body);
}
.lead-wide { max-width: 760px; }
.lead-narrow { max-width: 400px; }

.footnote {
  margin: 20px 0 0;
  font-size: 12px;
  line-height: 1.9;
  color: var(--text-muted);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: filter 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 14px 28px -14px rgba(43, 90, 232, 0.65);
}
.btn-primary:hover { filter: brightness(0.93); color: #fff; }
.btn-outline {
  background: #fff;
  color: var(--ink);
  border: 1px solid #D4DEEE;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-white {
  background: #fff;
  color: var(--ink);
  margin-top: 34px;
  padding: 16px 34px;
  font-weight: 800;
}
.btn-white:hover { transform: translateY(-2px); color: var(--ink); }
.btn-sm { padding: 10px 20px; font-size: 13px; }
.btn-block { width: 100%; padding: 16px; letter-spacing: 0.06em; }
.arrow { font-family: 'Archivo', sans-serif; }
.arrow-accent { color: var(--accent); }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(1.3) blur(12px);
  -webkit-backdrop-filter: saturate(1.3) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
}
.nav-logo-text {
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--ink);
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-link {
  font-size: 14px;
  font-weight: 700;
  color: #43536B;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.is-active { color: var(--accent); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: none;
}
.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.lang-current { color: var(--ink); }
.lang-sep { color: #C3CEDE; }
.lang-link { color: #6B7A90; text-decoration: none; }
.lang-link:hover { color: var(--accent); }
.nav-lang-mobile { display: none; }

.nav-toggle {
  display: none;
  flex: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(178deg, #FFFFFF 0%, #EFF4FD 60%, #E7EFFB 100%);
}
.hero-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(43, 90, 232, 0.1) 1.2px, transparent 1.2px);
  background-size: 34px 34px;
  opacity: 0.5;
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  top: -160px;
  right: -120px;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43, 90, 232, 0.16), transparent 66%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 1.12fr;
  gap: 30px;
  align-items: center;
  min-height: 600px;
  padding-top: 58px;
  padding-bottom: 64px;
}
.hero-title {
  font-weight: 900;
  font-size: 56px;
  line-height: 1.34;
  letter-spacing: 0.01em;
  margin: 28px 0 0;
}
.hero-lead {
  margin: 28px 0 0;
  font-size: 16px;
  line-height: 2;
  letter-spacing: 0.01em;
  color: var(--text-body);
  max-width: 500px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}
.hero-media-frame {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  background: linear-gradient(160deg, #FFFFFF 0%, #EAF1FC 100%);
  box-shadow: 0 40px 80px -32px rgba(15, 29, 51, 0.28), 0 1px 0 rgba(255, 255, 255, 0.6) inset;
}
.hero-media img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== Sections ===== */
.section {
  background: #fff;
  padding: 96px 0 100px;
}
.section-tint {
  background: var(--tint-bg);
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}

/* ===== Business ===== */
.business-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 60px;
  align-items: start;
}
.framed-image {
  margin-top: 30px;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}
.valuechain {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}
.valuechain-item {
  display: flex;
  gap: 20px;
  padding: 24px 4px;
  border-bottom: 1px solid #EDF2FA;
}
.valuechain-no {
  flex: none;
  width: 38px;
  padding-top: 7px;
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 18px;
  color: var(--accent);
  letter-spacing: 0.03em;
}
.valuechain-body { flex: 1; }
.valuechain-heading {
  display: flex;
  align-items: baseline;
  gap: 11px;
  flex-wrap: wrap;
}
.valuechain-title {
  font-weight: 800;
  font-size: 20px;
  color: var(--ink);
}
.valuechain-en {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}
.valuechain-desc {
  margin-top: 9px;
  font-size: 14px;
  line-height: 1.95;
  color: var(--text-body);
}

/* ===== Card grid (service / feature / flow) ===== */
.card-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

/* Service cards */
.service-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 26px 46px -28px rgba(15, 29, 51, 0.34);
}
.service-card-top { padding: 32px 30px 6px; }
.service-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.service-abbr {
  font-family: 'Archivo', sans-serif;
  font-weight: 800;
  font-size: 30px;
  letter-spacing: 0.01em;
  color: var(--accent);
}
.service-en {
  font-family: 'Archivo', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}
.service-title {
  margin: 12px 0 0;
  font-weight: 800;
  font-size: 19px;
  color: var(--ink);
}
.service-body {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.95;
  color: var(--text-body);
}
.service-points {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.service-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  color: #23344D;
}
.check {
  flex: none;
  color: var(--accent);
  font-weight: 900;
  font-size: 14px;
}
.service-card-media {
  margin-top: 20px;
  border-top: 1px solid #EEF3FA;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 12px 20px;
}
.service-card-media img {
  width: 90%;
  height: 196px;
  object-fit: contain;
}

/* Strength / flow cards */
.strength-card {
  background: #fff;
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 14px;
  padding: 32px 30px;
}
.strength-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.strength-no {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 20px;
  color: var(--accent);
  line-height: 1;
}
.strength-en {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--text-muted);
}
.strength-title {
  margin: 20px 0 0;
  font-weight: 800;
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink);
}
.strength-desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 2;
  color: var(--text-body);
}

.flow-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 30px;
}
.flow-head {
  display: flex;
  align-items: baseline;
  gap: 13px;
}
.flow-no {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 20px;
  color: var(--accent);
  line-height: 1;
  letter-spacing: 0.02em;
}
.flow-en {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}
.flow-title {
  margin: 18px 0 0;
  font-weight: 800;
  font-size: 19px;
  line-height: 1.5;
  color: var(--ink);
}
.flow-desc {
  margin: 11px 0 0;
  font-size: 14px;
  line-height: 1.95;
  color: var(--text-body);
}

/* ===== Company ===== */
.company-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 64px;
  align-items: start;
}
.company-table {
  margin: 0;
  border-top: 2px solid var(--ink);
}
.company-row {
  display: grid;
  grid-template-columns: 168px 1fr;
  padding: 21px 4px;
  border-bottom: 1px solid var(--border-soft);
  gap: 12px;
}
.company-row dt {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #7C8CA0;
  padding-top: 3px;
}
.company-row dd {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ===== CTA (modular data center) ===== */
.cta {
  position: relative;
  overflow: hidden;
  background: #0A1730;
}
.cta-media {
  position: absolute;
  inset: 0;
}
.cta-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 17, 38, 0.94) 0%, rgba(8, 17, 38, 0.78) 42%, rgba(8, 17, 38, 0.34) 100%);
}
.cta-content {
  position: relative;
  padding: 92px 40px 96px;
}
.cta-title {
  font-weight: 900;
  font-size: 40px;
  line-height: 1.42;
  letter-spacing: 0.01em;
  color: #fff;
  margin: 0;
}
.cta-lead {
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.82);
  max-width: 540px;
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}
.info-list {
  margin-top: 30px;
  border-top: 1px solid #E2E9F3;
}
.info-row {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid #E2E9F3;
  flex-wrap: wrap;
}
.info-label {
  font-family: 'Archivo', sans-serif;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
  width: 74px;
  flex: none;
}
.info-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-soft);
}

.contact-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
}
.field { margin-bottom: 20px; }
.field-trap { display: none; }
.form-error {
  margin: -6px 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: #C0392B;
  text-align: center;
}
.field label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #23344D;
  margin-bottom: 9px;
}
.required { color: var(--accent); }
.field input,
.field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #DDE4EC;
  border-radius: 6px;
  font-size: 15px;
  color: var(--ink-soft);
  background: #FBFCFE;
  transition: border-color 0.15s;
}
.field textarea { resize: vertical; line-height: 1.7; }

.contact-thanks { padding: 40px 10px; text-align: center; }
.thanks-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto;
  border-radius: 50%;
  background: var(--accent);
  position: relative;
}
.thanks-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 21px;
  height: 11px;
  border-left: 3px solid #fff;
  border-bottom: 3px solid #fff;
  transform: translate(-50%, -60%) rotate(-45deg);
}
.thanks-title {
  margin-top: 22px;
  font-weight: 800;
  font-size: 22px;
  color: var(--ink);
}
.thanks-desc {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-body);
}

/* ===== Legal pages ===== */
.legal-container { max-width: 760px; }
.legal-h3 {
  margin: 44px 0 0;
  font-weight: 800;
  font-size: 19px;
  color: var(--ink);
}
.legal-p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 2;
  color: var(--text-body);
}
.legal-ul {
  margin: 14px 0 0;
  padding-left: 20px;
  font-size: 14px;
  line-height: 2;
  color: var(--text-body);
}
.legal-date {
  margin: 48px 0 0;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== Footer ===== */
.footer {
  background: #0A1730;
  color: rgba(255, 255, 255, 0.72);
}
.footer-top {
  padding: 48px 40px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 32px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #fff;
}
.footer-tagline {
  margin-top: 2px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.5);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.footer-links a { color: rgba(255, 255, 255, 0.72); }
.footer-links a:hover { color: #fff; }
.footer-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}
.footer-info-label {
  font-weight: 800;
  color: rgba(255, 255, 255, 0.85);
}
.footer-info a { color: rgba(255, 255, 255, 0.6); }
.footer-info a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-bottom-inner {
  padding: 18px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .container { padding: 0 24px; }
  .nav-inner { padding: 0 24px; }

  .nav-toggle { display: flex; margin-left: auto; }
  .nav-actions .btn-primary.btn-sm { display: none; }
  .nav-actions .lang-switch { display: none; }
  .nav-links {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-link { padding: 12px 0; width: 100%; }
  .nav-lang-mobile {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    width: 100%;
    margin-top: 4px;
    padding-top: 14px;
    border-top: 1px solid var(--border-soft);
  }
  .nav-actions { gap: 12px; }
  .btn-sm { padding: 9px 16px; }

  .hero-grid { grid-template-columns: 1fr; min-height: 0; padding-top: 40px; padding-bottom: 72px; }
  .hero-media { order: -1; max-width: 420px; margin: 0 auto; }
  .hero-title { font-size: 42px; }

  .business-grid,
  .company-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }

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

  .company-row { grid-template-columns: 130px 1fr; }

  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .nav-inner { padding: 0 20px; gap: 10px; }
  .nav-logo-text { font-size: 16px; }
  .nav-actions { gap: 10px; }

  .hero-grid { padding-top: 40px; padding-bottom: 72px; }
  .hero-title { font-size: 34px; }
  .h2 { font-size: 28px; }
  .cta-content { padding: 72px 24px 80px; }
  .cta-title { font-size: 25px; }

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

  .company-row { grid-template-columns: 1fr; gap: 4px; }

  .contact-card { padding: 28px 22px; }

  .footer-top {
    padding: 32px 20px;
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-brand { grid-column: auto; }
  .footer-bottom-inner { padding: 16px 20px; justify-content: flex-start; }
}