* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  line-height: 1.6;
  color: #222;
  background: #fafafa;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

.logo {
  height: 60px;
}

.hero-img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 12px;
}

.profile-img,
.activities-img,
.gear-img {
  max-width: 100%;
  border-radius: 12px;
  margin: 12px 0;
}

.site-header {
  background: #000000;
  color: #fff;
  position: relative;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.main-nav {
  display: flex;
  gap: 12px;
}

.main-nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
}

.hero {
  padding: 24px 0;
  text-align: center;
}

.hero .lead {
  margin-top: 12px;
  color: #444;
}

.about,
.profile,
.links {
  margin-top: 24px;
  background: #fff;
  padding: 18px;
  border-radius: 8px;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.05);
}

h2,
h3,
h4 {
  margin-bottom: 12px;
}

.artists {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.artists li {
  background: #f0f0f0;
  padding: 6px 10px;
  border-radius: 6px;
}

.social img {
  height: 28px;
  margin-right: 8px;
}

.site-footer {
  margin-top: 36px;
  padding: 18px 0;
  text-align: center;
  color: #000000;
}

.activities .events {
  list-style: none;
  margin-top: 12px;
}

.activities .events li {
  padding: 8px 0;
  border-bottom: 1px dashed #eee;
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: 0;
    background: #111;
    padding: 12px;
    border-radius: 0 0 8px 8px;
  }

  .main-nav.show {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }
}

.header-btn {
  background: #ff7b00;
  color: #fff;
  padding: 8px 16px;
  border-radius: 9999px; /* 角丸（pill型） */
  font-weight: 600;
  text-decoration: none;
  transition: background 0.3s ease;
}

.header-btn:hover {
  background: #ff9900;
}