:root {
  --stripe-light: #eaf6fb;
  --stripe-dark: #d6eef7;
  --green: #4a8c5f;
  --green-dark: #3a7049;
  --line-green: #06c755;
  --line-green-dark: #05a648;
  --text: #3a3a3a;
  --card-bg: #ffffff;
  --card-radius: 20px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Maru Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--text);
  background-color: var(--stripe-light);
  background-image: repeating-linear-gradient(
    90deg,
    var(--stripe-light),
    var(--stripe-light) 28px,
    var(--stripe-dark) 28px,
    var(--stripe-dark) 56px
  );
  line-height: 1.8;
}

.hero {
  text-align: center;
  padding: 40px 20px 24px;
}

.logo {
  width: 160px;
  height: auto;
  display: block;
  margin: 0 auto 12px;
}

.hero h1 {
  font-size: 1.8rem;
  margin: 0 0 8px;
  color: var(--green-dark);
}

.tagline {
  margin: 0;
  font-size: 1rem;
  color: var(--text);
}

.site-nav {
  margin-top: 16px;
}

.site-nav a {
  color: var(--green-dark);
  font-weight: bold;
  text-decoration: none;
  border-bottom: 2px solid var(--green);
  padding-bottom: 2px;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--green);
}

.report {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.report-date {
  margin: 0;
  font-weight: bold;
  color: var(--green-dark);
  font-size: 0.95rem;
}

.report h2 {
  margin: 0;
  font-size: 1.15rem;
  color: var(--green-dark);
  border-left: none;
  padding-left: 0;
}

.report-photos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.report-photos img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
}

.report-text {
  margin: 0;
}

.empty-state {
  text-align: center;
}

.empty-state .line-button {
  margin-top: 8px;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 16px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--card-radius);
  padding: 28px 24px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.card h2 {
  margin-top: 0;
  font-size: 1.25rem;
  color: var(--green-dark);
  border-left: 6px solid var(--green);
  padding-left: 10px;
}

.event-box {
  background: var(--stripe-light);
  border-radius: 14px;
  padding: 20px;
  margin: 16px 0;
}

.event-title {
  font-weight: bold;
  font-size: 1.1rem;
  margin: 0 0 12px;
  color: var(--green-dark);
}

.event-details {
  margin: 0;
}

.event-details > div {
  display: flex;
  gap: 12px;
  padding: 6px 0;
  border-bottom: 1px dashed #cfe4ec;
}

.event-details > div:last-child {
  border-bottom: none;
}

.event-details dt {
  flex: 0 0 4.5em;
  font-weight: bold;
  color: var(--green-dark);
}

.event-details dd {
  margin: 0;
  flex: 1;
}

.event-note {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 0;
}

.contact {
  text-align: center;
}

.line-button {
  display: inline-block;
  margin: 16px 0;
  padding: 14px 32px;
  background: var(--line-green);
  color: #fff;
  font-weight: bold;
  font-size: 1.05rem;
  text-decoration: none;
  border-radius: 999px;
  box-shadow: 0 4px 10px rgba(6, 199, 85, 0.35);
  transition: background 0.2s ease;
}

.line-button:hover,
.line-button:focus {
  background: var(--line-green-dark);
}

.qr {
  display: block;
  max-width: 240px;
  width: 100%;
  height: auto;
  margin: 8px auto 0;
  border-radius: 12px;
}

.link-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.link-list a {
  color: var(--green-dark);
  font-weight: bold;
  text-decoration: none;
  border-bottom: 2px solid var(--green);
  padding-bottom: 2px;
}

.link-list a:hover,
.link-list a:focus {
  color: var(--green);
}

footer {
  text-align: center;
  padding: 24px 16px 40px;
  font-size: 0.9rem;
  color: #666;
}

@media (max-width: 420px) {
  .hero h1 {
    font-size: 1.5rem;
  }

  .card {
    padding: 22px 18px;
  }
}