/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol, dl { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

:root {
  --c-navy:     #0c2a4a;
  --c-navy-2:   #14406b;
  --c-accent:   #1ea7c4;
  --c-accent-2: #5fd1d9;
  --c-mint:     #e6f7f8;
  --c-text:     #1c2c3a;
  --c-sub:      #5a6b7d;
  --c-line:     #e3eaf1;
  --c-bg:       #ffffff;
  --c-bg-alt:   #f5f9fc;
  --radius:     12px;
  --shadow-sm:  0 2px 8px rgba(12, 42, 74, 0.06);
  --shadow-md:  0 12px 32px rgba(12, 42, 74, 0.08);
  --max-w:      1120px;
}

body {
  font-family: "Noto Sans JP", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Inter", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-navy);
}
.logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-accent) 100%);
  position: relative;
}
.logo-mark::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 4px;
  background: rgba(255,255,255,0.85);
}
.logo-text {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
  font-size: 18px;
}
.logo-text small {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--c-sub);
  font-weight: 500;
  margin-top: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
}
.nav a {
  color: var(--c-text);
  transition: color .2s;
}
.nav a:hover { color: var(--c-accent); }
.nav-cta {
  background: var(--c-navy);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 999px;
  transition: background .2s, transform .2s;
}
.nav-cta:hover { background: var(--c-navy-2); transform: translateY(-1px); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  transition: transform .2s, box-shadow .2s, background .2s, color .2s;
}
.btn-primary {
  background: var(--c-navy);
  color: #fff;
  box-shadow: 0 6px 18px rgba(12, 42, 74, 0.18);
}
.btn-primary:hover {
  background: var(--c-navy-2);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(12, 42, 74, 0.22);
}
.btn-ghost {
  background: transparent;
  color: var(--c-navy);
  border: 1.5px solid var(--c-navy);
}
.btn-ghost:hover {
  background: var(--c-navy);
  color: #fff;
}
.btn-light {
  background: #fff;
  color: var(--c-navy);
  font-family: "Inter", sans-serif;
  letter-spacing: 0.04em;
}
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,0.15); }

/* ===== Eyebrow / Headings ===== */
.eyebrow {
  font-family: "Inter", sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 12px;
}
.eyebrow-light { color: var(--c-accent-2); }

.section-head {
  text-align: center;
  margin-bottom: 56px;
}
.section-head-left { text-align: left; }
.section-head h2 {
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: 0.02em;
}
.section-desc {
  margin-top: 18px;
  color: var(--c-sub);
  font-size: 15px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  padding: 80px 0;
  overflow: hidden;
  background: #ffffff;
}
.hero-photo {
  position: absolute;
  top: 0;
  right: 0;
  width: 65%;
  height: 100%;
  z-index: 0;
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.hero-photo-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg,
      #ffffff 0%,
      rgba(255,255,255,0.96) 18%,
      rgba(255,255,255,0.55) 38%,
      rgba(255,255,255,0.05) 60%,
      rgba(255,255,255,0) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
}
.hero-content .eyebrow {
  margin-bottom: 20px;
}
.hero-content h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  line-height: 1.32;
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: 0.04em;
  margin-bottom: 32px;
  max-width: 640px;
}
.hero-content .lead {
  font-size: 16px;
  color: var(--c-text);
  margin-bottom: 44px;
  max-width: 520px;
  line-height: 1.95;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 56px;
}
.btn-arrow {
  margin-left: 10px;
  transition: transform .2s;
}
.btn-primary:hover .btn-arrow { transform: translateX(3px); }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  padding-top: 28px;
  max-width: 520px;
  border-top: 1px solid var(--c-line);
}
.hero-stats li {
  display: flex;
  flex-direction: column;
}
.hero-stats strong {
  font-family: "Inter", sans-serif;
  font-size: 30px;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1;
}
.hero-stats span {
  margin-top: 8px;
  font-size: 12px;
  color: var(--c-sub);
  letter-spacing: 0.04em;
}
/* ===== Sections ===== */
.section {
  padding: 112px 0;
}
.section-alt {
  background: var(--c-bg-alt);
}

/* ===== Service Cards ===== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 40px 32px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.card-num {
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--c-accent);
  margin-bottom: 18px;
}
.card h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 16px;
}
.card-desc {
  color: var(--c-sub);
  font-size: 15px;
  margin-bottom: 24px;
}
.card-list {
  border-top: 1px solid var(--c-line);
  padding-top: 20px;
}
.card-list li {
  position: relative;
  padding: 8px 0 8px 22px;
  font-size: 14px;
  color: var(--c-text);
}
.card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--c-accent);
  border-bottom: 2px solid var(--c-accent);
  transform: rotate(-45deg);
}
.card-accent {
  background: linear-gradient(180deg, #ffffff 0%, #f3fbfc 100%);
  border-color: var(--c-accent-2);
}

/* ===== Strengths ===== */
.strengths {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.strength {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s;
}
.strength:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.strength-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--c-mint);
  color: var(--c-accent);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}
.strength-icon svg { width: 24px; height: 24px; }
.strength h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 10px;
}
.strength p {
  font-size: 14px;
  color: var(--c-sub);
  line-height: 1.7;
}

/* ===== Process ===== */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.process li {
  position: relative;
  padding: 32px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}
.process li::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -16px;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--c-accent-2);
  border-right: 2px solid var(--c-accent-2);
  transform: translateY(-50%) rotate(45deg);
}
.process li:last-child::after { display: none; }
.process-step {
  display: inline-block;
  font-family: "Inter", sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--c-accent);
  background: var(--c-mint);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
}
.process h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-navy);
  margin-bottom: 8px;
}
.process p {
  font-size: 14px;
  color: var(--c-sub);
}

/* ===== Company ===== */
.company-info {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border-radius: 16px;
  padding: 16px 48px;
  box-shadow: var(--shadow-sm);
}
.company-info > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--c-line);
  align-items: baseline;
}
.company-info > div:last-child { border-bottom: none; }
.company-info dt {
  font-weight: 600;
  color: var(--c-navy);
  font-size: 13px;
  letter-spacing: 0.12em;
  position: relative;
  padding-left: 14px;
}
.company-info dt::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 14px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-accent) 0%, var(--c-navy) 100%);
}
.company-info dd {
  margin: 0;
  color: var(--c-text);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
}


/* ===== Footer ===== */
.site-footer {
  background: #0a213a;
  color: rgba(255,255,255,0.7);
  padding: 36px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.logo-footer { color: #fff; }
.logo-footer .logo-text small { color: rgba(255,255,255,0.5); }
.copy {
  font-family: "Inter", sans-serif;
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr; }
  .strengths { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process li::after { display: none; }
  .section { padding: 80px 0; }

  .hero {
    min-height: auto;
    padding: 0;
    display: block;
  }
  .hero-photo {
    position: relative;
    width: 100%;
    height: 280px;
  }
  .hero-photo-overlay {
    background: linear-gradient(180deg,
      rgba(255,255,255,0.55) 0%,
      rgba(255,255,255,0) 35%);
  }
  .hero-content {
    padding-top: 56px;
    padding-bottom: 64px;
  }
  .hero-content h1,
  .hero-content .lead,
  .hero-stats { max-width: none; }
}

@media (max-width: 640px) {
  .nav { gap: 14px; font-size: 13px; }
  .nav a:not(.nav-cta) { display: none; }
  .strengths { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .hero-stats { gap: 28px; }
  .hero-stats strong { font-size: 24px; }
  .hero-photo { height: 220px; }
  .company-info { padding: 8px 24px; }
  .company-info > div {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 22px 0;
  }
  .company-info dd { font-size: 15px; }
  .header-inner { height: 64px; }
}