/* ===== Design tokens ===== */
:root {
  --navy: #13294b;
  --navy-dark: #0d1d36;
  --navy-light: #24446f;
  --accent: #c8a45c;      /* 落ち着いたゴールド系アクセント */
  --accent-dark: #ab8945;
  --ink: #1d2530;
  --ink-soft: #51606f;
  --line: #e3e8ef;
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --radius: 10px;
  --maxw: 1080px;
  --shadow: 0 10px 30px rgba(19, 41, 75, 0.08);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, p, ul { margin: 0; }
ul { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: 680px; }

.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }

.section-eyebrow {
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 16px;
}
.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  background: var(--accent);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--navy);
  letter-spacing: 0.02em;
}
.nav { display: flex; align-items: center; gap: 28px; }
.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.2s;
}
.nav a:hover { color: var(--navy); }
.nav-cta {
  background: var(--navy);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 700 !important;
}
.nav-cta:hover { background: var(--navy-light); }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(200,164,92,0.22) 0%, rgba(200,164,92,0) 70%);
}
.hero-inner {
  padding: 110px 24px 120px;
  position: relative;
  z-index: 1;
}
.hero-globe {
  position: absolute;
  right: -30px;
  top: 50%;
  transform: translateY(-50%);
  width: 480px;
  height: 480px;
  color: rgba(200, 164, 92, 0.16);
  z-index: 0;
  pointer-events: none;
}
.hero-eyebrow {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  margin-bottom: 20px;
}
.hero-title {
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 24px;
}
.hero-lead {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 40px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  font-weight: 700;
  border-radius: 999px;
  padding: 15px 36px;
  cursor: pointer;
  border: none;
  font-size: 1rem;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}
.btn-primary {
  background: var(--accent);
  color: var(--navy-dark);
  box-shadow: 0 8px 20px rgba(200, 164, 92, 0.35);
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-block { width: 100%; margin-top: 12px; }

/* ===== 事業内容 ===== */
.business-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: start;
}
.business-text p { color: var(--ink-soft); margin-bottom: 20px; }
.business-note {
  background: #fff;
  border-left: 4px solid var(--accent);
  padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow);
  color: var(--ink) !important;
}
.business-note strong { color: var(--navy); }

.feature-list { display: grid; gap: 16px; }
.feature-list li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}
.feature-list li:hover {
  box-shadow: var(--shadow);
  border-color: transparent;
  transform: translateY(-2px);
}
.feature-icon {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(200, 164, 92, 0.14);
  color: var(--accent-dark);
}
.feature-icon svg { width: 24px; height: 24px; }
.feature-body { display: block; }
.feature-label {
  display: block;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 4px;
}
.feature-desc { display: block; font-size: 0.92rem; color: var(--ink-soft); }

/* ===== 会社概要テーブル ===== */
.company-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.company-table th,
.company-table td {
  text-align: left;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.company-table tr:last-child th,
.company-table tr:last-child td { border-bottom: none; }
.company-table th {
  width: 30%;
  background: var(--bg-alt);
  color: var(--navy);
  font-weight: 700;
  white-space: nowrap;
}
.company-table td { color: var(--ink-soft); }

/* ===== Contact form ===== */
.contact-intro { color: var(--ink-soft); margin-bottom: 10px; }
.contact-note { font-size: 0.85rem; color: var(--ink-soft); margin: 0 0 36px; }
.form-row { margin-bottom: 22px; }
.form-row label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 0.95rem;
}
.req, .opt {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
}
.req { background: #fdecec; color: #c0392b; }
.opt { background: var(--bg-alt); color: var(--ink-soft); }

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--navy-light);
  box-shadow: 0 0 0 3px rgba(36, 68, 111, 0.12);
}
.form-row textarea { resize: vertical; }

/* ハニーポット（画面外へ） */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin-top: 16px;
  text-align: center;
  font-weight: 500;
  display: none;
}
.form-status.show { display: block; }
.form-status.ok { color: #1e7e44; }
.form-status.err { color: #c0392b; }

/* ===== Footer ===== */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand { font-weight: 700; color: #fff; }
.footer-copy { font-size: 0.85rem; }

/* ===== Responsive ===== */
.pc-only { display: inline; }

@media (max-width: 820px) {
  .business-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 1.5rem; }
  .nav { gap: 16px; }
  .nav a:not(.nav-cta) { display: none; }   /* スマホはCTAのみ表示 */
  .hero-inner { padding: 72px 24px 80px; }
  .hero-title { font-size: 1.9rem; }
  .hero-lead { font-size: 0.98rem; }
  .hero-globe { width: 300px; right: -100px; }
  .pc-only { display: none; }
  .company-table th,
  .company-table td { padding: 14px 16px; }
  .company-table th { width: 34%; white-space: normal; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .company-table,
  .company-table tbody,
  .company-table tr { display: block; }
  .company-table th,
  .company-table td { display: block; width: 100%; }
  .company-table th { border-bottom: none; padding-bottom: 4px; }
  .company-table td { padding-top: 4px; }
}