/* MID株式会社 コーポレートサイト 共通スタイル */

:root {
  --navy: #0f2540;
  --navy-light: #1b3a5f;
  --accent: #0a7cc7;
  --accent-dark: #075a92;
  --text: #1f2933;
  --text-muted: #5b6774;
  --line: #e3e8ee;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --max: 1080px;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

a { color: var(--accent-dark); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--navy);
  text-decoration: none;
}

.logo .logo-sub {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  font-size: 0.9rem;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.nav a:hover { color: var(--accent-dark); border-bottom-color: var(--accent); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 55%, #24557f 100%);
  color: #fff;
  padding: 92px 0 84px;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(1.7rem, 4.4vw, 2.7rem);
  line-height: 1.5;
  letter-spacing: 0.01em;
}

.hero p {
  margin: 0 0 32px;
  max-width: 46em;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.02rem;
}

.hero .eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  padding: 5px 14px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.9);
}

.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 6px;
  background: #fff;
  color: var(--navy);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22); }

.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.6);
  margin-left: 12px;
}

/* ---------- Sections ---------- */
section { padding: 76px 0; }

section.soft { background: var(--bg-soft); }

.section-head { margin-bottom: 44px; }

.section-head .en {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 8px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  color: var(--navy);
  letter-spacing: 0.02em;
}

.lead { max-width: 44em; color: var(--text-muted); margin: 0 0 8px; }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
}

.card h3 {
  margin: 0 0 12px;
  font-size: 1.06rem;
  color: var(--navy);
}

.card p { margin: 0; font-size: 0.94rem; color: var(--text-muted); }

.card .num {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 10px;
}

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

.info-table th,
.info-table td {
  border-bottom: 1px solid var(--line);
  padding: 18px 8px;
  text-align: left;
  vertical-align: top;
}

.info-table th {
  width: 190px;
  color: var(--navy);
  font-weight: 700;
  white-space: nowrap;
}

/* ---------- Contact ---------- */
.contact-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  max-width: 640px;
}

.contact-box dl { margin: 0; }
.contact-box dt { font-weight: 700; color: var(--navy); font-size: 0.9rem; margin-top: 18px; }
.contact-box dt:first-child { margin-top: 0; }
.contact-box dd { margin: 4px 0 0; }

/* ---------- Legal page ---------- */
.page-head {
  background: var(--navy);
  color: #fff;
  padding: 60px 0 52px;
}

.page-head h1 {
  margin: 0;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  letter-spacing: 0.02em;
}

.page-head .en {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 10px;
}

.legal { padding: 60px 0 88px; }

.legal .wrap { max-width: 840px; }

.legal .intro {
  border-left: 3px solid var(--accent);
  padding-left: 18px;
  color: var(--text-muted);
  margin-bottom: 44px;
}

.legal h2 {
  margin: 52px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 1.15rem;
  color: var(--navy);
  letter-spacing: 0.01em;
}

.legal h2:first-of-type { margin-top: 0; }

.legal h3 {
  margin: 30px 0 10px;
  font-size: 1rem;
  color: var(--navy-light);
}

.legal p { margin: 0 0 16px; }

.legal ul,
.legal ol { margin: 0 0 18px; padding-left: 1.5em; }

.legal li { margin-bottom: 8px; }

.legal .note {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.legal .revision {
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.lang-switch {
  margin-top: 18px;
  font-size: 0.86rem;
}

.lang-switch a { color: rgba(255, 255, 255, 0.9); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.72);
  padding: 46px 0 34px;
  font-size: 0.88rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
}

.site-footer a { color: rgba(255, 255, 255, 0.85); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

.site-footer .fnav { display: flex; flex-wrap: wrap; gap: 8px 22px; }

.copyright { width: 100%; margin-top: 10px; font-size: 0.78rem; color: rgba(255, 255, 255, 0.5); }

/* ---------- Utility ---------- */
.todo {
  background: #fff5d6;
  border-bottom: 1px dashed #c99a00;
  padding: 0 4px;
  color: #7a5c00;
  font-size: 0.92em;
}

@media (max-width: 640px) {
  section { padding: 56px 0; }
  .hero { padding: 66px 0 60px; }
  .btn-outline { margin-left: 0; margin-top: 12px; }
  .info-table th { width: auto; display: block; border-bottom: none; padding-bottom: 0; }
  .info-table td { display: block; padding-top: 6px; }
  .site-header .wrap { flex-direction: column; align-items: flex-start; padding-top: 12px; padding-bottom: 12px; }
}