:root {
  --blue-900: #0b2e5c;
  --blue-700: #114b8c;
  --blue-600: #1763b8;
  --blue-500: #2e82de;
  --blue-100: #e8f1fc;
  --blue-50: #f4f9ff;
  --ink: #1b2430;
  --ink-soft: #55616f;
  --line: #dde6f0;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(11, 46, 92, 0.08);
  --shadow-hover: 0 16px 40px rgba(11, 46, 92, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: 1120px;
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--blue-900);
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--blue-600), var(--blue-900));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.brand-sub {
  display: block;
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.05em;
}

.nav-desktop {
  display: flex;
  gap: 32px;
}

.nav-desktop a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--blue-700);
  border-color: var(--blue-500);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: transform .15s, box-shadow .15s, background .2s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-900));
  color: #fff;
  box-shadow: 0 8px 20px rgba(17, 75, 140, 0.28);
}

.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(17, 75, 140, 0.34); }

.btn-ghost {
  background: #fff;
  color: var(--blue-700);
  border: 1.5px solid var(--blue-500);
}

.btn-ghost:hover { background: var(--blue-50); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  align-items: center;
  justify-content: center;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 10px 20px 18px;
  border-top: 1px solid var(--line);
  background: #fff;
}

.nav-mobile a {
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  font-weight: 500;
  color: var(--ink);
}

.nav-mobile.open { display: flex; }

/* Hero */
.hero {
  position: relative;
  color: #fff;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(8,32,66,0.92) 0%, rgba(11,46,92,0.82) 45%, rgba(17,75,140,0.55) 100%);
}

.hero-inner {
  position: relative;
  padding: 120px 20px 100px;
  max-width: 1120px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.35);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  margin-bottom: 22px;
}

.hero h1 {
  font-size: clamp(1.9rem, 4.4vw, 3.1rem);
  line-height: 1.45;
  font-weight: 800;
  margin: 0 0 20px;
  max-width: 760px;
}

.hero p {
  max-width: 560px;
  color: rgba(255,255,255,0.88);
  font-size: 1.02rem;
  margin: 0 0 34px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.page-hero {
  position: relative;
  color: #fff;
  padding: 90px 20px 70px;
  text-align: center;
}

.page-hero .page-kicker {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.75);
  margin-bottom: 12px;
}

.page-hero h1 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); margin: 0 0 14px; }
.page-hero p { max-width: 620px; margin: 0 auto; color: rgba(255,255,255,0.85); }

/* Sections */
section { padding: 84px 0; }
.section-light { background: var(--blue-50); }

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.kicker {
  display: inline-block;
  color: var(--blue-600);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin: 0 0 14px;
  color: var(--blue-900);
}

.section-head p { color: var(--ink-soft); margin: 0; }

/* Cards grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 26px;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}

.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--blue-100);
  color: var(--blue-700);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.card h3 { margin: 0 0 10px; font-size: 1.08rem; color: var(--ink); }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.93rem; }

/* Case cards */
.case-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .2s, box-shadow .2s;
}

.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.case-img { height: 210px; overflow: hidden; position: relative; }
.case-img img { width: 100%; height: 100%; object-fit: cover; }

.case-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(11,46,92,0.85);
  color: #fff;
  font-size: 0.72rem;
  padding: 5px 12px;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.case-body { padding: 22px 22px 26px; }
.case-body .case-num { color: var(--blue-600); font-weight: 700; font-size: 0.78rem; letter-spacing: 0.06em; }
.case-body h3 { margin: 10px 0 10px; font-size: 1.05rem; }
.case-body p { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.case-meta { display: flex; gap: 14px; margin-top: 16px; font-size: 0.82rem; color: var(--ink-soft); flex-wrap: wrap; }
.case-meta span { display: inline-flex; align-items: center; gap: 6px; }

/* News */
.news-list { border-top: 1px solid var(--line); }
.news-item {
  display: flex;
  gap: 24px;
  align-items: baseline;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
}
.news-date { color: var(--blue-600); font-weight: 700; font-size: 0.85rem; min-width: 96px; }
.news-tag {
  font-size: 0.72rem;
  color: var(--blue-700);
  background: var(--blue-100);
  padding: 3px 10px;
  border-radius: 999px;
  margin-right: 10px;
}
.news-title { color: var(--ink); font-size: 0.94rem; }

/* CTA banner */
.cta-banner {
  background: linear-gradient(120deg, var(--blue-900), var(--blue-600));
  color: #fff;
  border-radius: 22px;
  padding: 56px 40px;
  text-align: center;
  margin: 0 20px;
}

.cta-banner h2 { margin: 0 0 14px; font-size: clamp(1.3rem, 2.6vw, 1.8rem); }
.cta-banner p { margin: 0 0 28px; color: rgba(255,255,255,0.85); }

/* Footer */
.site-footer {
  background: var(--blue-900);
  color: rgba(255,255,255,0.78);
  padding: 60px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-grid h4 { color: #fff; font-size: 0.9rem; margin: 0 0 16px; letter-spacing: 0.04em; }
.footer-grid li { margin-bottom: 10px; font-size: 0.88rem; }
.footer-grid a:hover { color: #fff; }

.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand span { color: #fff; font-weight: 700; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.14);
  padding-top: 22px;
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* About table */
.about-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-table tr { border-bottom: 1px solid var(--line); }
.about-table tr:last-child { border-bottom: none; }
.about-table th, .about-table td { text-align: left; padding: 20px 26px; font-size: 0.92rem; }
.about-table th { width: 200px; background: var(--blue-50); color: var(--blue-900); font-weight: 700; }
.about-table td { color: var(--ink); }

/* Company page */
.message-block {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
  align-items: center;
}
.message-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.message-img img { width: 100%; height: 340px; object-fit: cover; }
.message-text h2 { color: var(--blue-900); font-size: 1.5rem; margin: 0 0 18px; }
.message-text p { color: var(--ink-soft); margin: 0 0 14px; }
.message-signature { margin-top: 22px; font-weight: 700; color: var(--blue-800); }

.value-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 10px; }
.value-item { padding: 26px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.value-item .num { color: var(--blue-100); font-size: 2.4rem; font-weight: 800; line-height: 1; margin-bottom: 10px; }
.value-item h3 { margin: 0 0 8px; font-size: 1rem; color: var(--blue-900); }
.value-item p { margin: 0; font-size: 0.88rem; color: var(--ink-soft); }

/* Contact */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: start;
}

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow);
}

.form-row { margin-bottom: 20px; }
.form-row label { display: block; font-size: 0.86rem; font-weight: 600; margin-bottom: 8px; color: var(--ink); }
.form-row .req { color: #e0533d; font-size: 0.72rem; margin-left: 6px; }
.form-row input, .form-row textarea, .form-row select {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--blue-50);
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
  outline: none;
  border-color: var(--blue-500);
  background: #fff;
}
.form-row textarea { resize: vertical; min-height: 120px; }

.contact-info-card {
  background: var(--blue-900);
  color: #fff;
  border-radius: var(--radius);
  padding: 34px;
}
.contact-info-card h3 { margin: 0 0 20px; font-size: 1.1rem; }
.contact-info-row { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.contact-info-row .ic { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,0.14); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-info-row .label { font-size: 0.76rem; color: rgba(255,255,255,0.6); margin-bottom: 2px; }
.contact-info-row .val { font-size: 0.94rem; }

.map-box {
  margin-top: 20px;
  border-radius: 12px;
  background: rgba(255,255,255,0.08);
  border: 1px dashed rgba(255,255,255,0.3);
  padding: 34px 20px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
}

.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 10px; }
.flow-step { text-align: center; padding: 22px 14px; background: #fff; border-radius: var(--radius); border: 1px solid var(--line); }
.flow-step .n { width: 34px; height: 34px; border-radius: 50%; background: var(--blue-700); color: #fff; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; font-weight: 700; font-size: 0.9rem; }
.flow-step h4 { margin: 0 0 6px; font-size: 0.92rem; }
.flow-step p { margin: 0; font-size: 0.8rem; color: var(--ink-soft); }

.badge-row { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 18px; }
.badge-pill { display: inline-flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 9px 18px; font-size: 0.82rem; color: var(--blue-900); box-shadow: var(--shadow); }

/* Responsive */
@media (max-width: 900px) {
  .nav-desktop, .header-cta .btn-primary.desktop-only { display: none; }
  .nav-toggle { display: flex; }
  .grid-3, .value-list, .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .message-block, .contact-wrap, .grid-2 { grid-template-columns: 1fr; }
  .message-img img { height: 240px; }
}

@media (max-width: 560px) {
  .grid-3, .grid-2, .value-list, .flow-steps, .footer-grid { grid-template-columns: 1fr; }
  .hero-inner { padding: 90px 20px 70px; }
  section { padding: 60px 0; }
  .cta-banner { padding: 40px 24px; margin: 0 12px; }
  .about-table th, .about-table td { padding: 14px 16px; font-size: 0.86rem; }
  .about-table th { width: 120px; }
}