@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;600;700&display=swap");

/* ===== Base ===== */
body {
  margin: 0;
  font-family: "Noto Sans JP", sans-serif;
  background: linear-gradient(to bottom right, #f8fafc, #e2e8f0);
  color: #1f2937;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  z-index: 1000;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 40px;
}

.nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.nav li {
  margin-right: 24px;
}

.nav li:last-child {
  margin-right: 0;
}

.nav a {
  font-size: 14px;
  color: #4b5563;
}

.nav a:hover,
.nav a.active {
  color: #0284c7;
  font-weight: 600;
}
  
/* ===== Footer ===== */
.footer {
  background: #1e293b;
  color: #e5e7eb;
  padding: 40px 0;
  margin-top: 80px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.footer-nav {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.footer-nav li {
  margin-right: 24px;
}

.footer-nav li:last-child {
  margin-right: 0;
}

.footer-nav a:hover {
  color: #fff;
}

.footer h3 {
  margin: 0;
  color: #fff;
}

.footer p {
  font-size: 14px;
  color: #cbd5f5;
}

/* ===== Copyright ===== */
.copyright {
  text-align: center;
  font-size: 12px;
  color: #94a3b8;
  margin-top: 24px;
}
/* 強調リンク */
.link {
  display: inline-block;
  margin-top: 16px;
  font-weight: 600;
  color: #0284c7;
  text-decoration: none;
  position: relative;
  transition: color 0.2s ease;
}

/* 下線アニメーション */
.link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background-color: #0284c7;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.link:hover {
  color: #0369a1;
}

.link:hover::after {
  transform: scaleX(1);
}