@charset "UTF-8";

:root {
  --line-green: #06c755;
  --line-green-dark: #0f8d48;
  --line-green-soft: #effaf3;
  --line-ink: #1f2937;
  --line-subtle: #5f6b7a;
  --line-border: #d8e8dc;
  --line-shadow: 0 20px 45px rgba(15, 35, 24, 0.12);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: clamp(16px, 3vw, 32px);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Meiryo", Arial, sans-serif;
  line-height: 1.8;
  color: var(--line-ink);
  background:
    radial-gradient(circle at top right, rgba(6, 199, 85, 0.12), transparent 24%),
    linear-gradient(180deg, #f6fbf7 0%, #eef5ff 100%);
}

main {
  display: block;
}

body > .container,
main > .container {
  max-width: 980px;
  margin: 0 auto;
  padding: clamp(20px, 4vw, 42px);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--line-border);
  border-radius: 24px;
  box-shadow: var(--line-shadow);
  backdrop-filter: blur(4px);
}

.container > * {
  margin-top: 0;
}

.container > * + * {
  margin-top: 1rem;
}

.container > img:first-child {
  display: block;
  width: min(220px, 72vw);
  height: auto;
  margin: 0 auto 1rem;
}

h3 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.35;
  text-align: center;
  color: var(--line-green-dark);
  letter-spacing: 0.03em;
}

h4 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  padding: 0.9rem 1rem;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.55;
  color: #11452a;
  background: linear-gradient(135deg, #f1fbf4 0%, #ffffff 100%);
  border-left: 6px solid var(--line-green);
  border-radius: 16px;
}

p {
  margin: 0;
  font-size: clamp(0.98rem, 1.2vw, 1.05rem);
  word-break: break-word;
}

p + p {
  margin-top: 0.85rem;
}

.container > p:first-of-type {
  text-align: center;
  color: var(--line-subtle);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.line-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.line-summary li {
  padding: 12px 14px;
  background: var(--line-green-soft);
  border: 1px solid #d7efde;
  border-radius: 14px;
  font-size: 0.96rem;
  font-weight: 500;
}

.line-note {
  padding: 14px 16px;
  background: linear-gradient(180deg, #fcfffd 0%, #f2faf4 100%);
  border: 1px solid #dceee0;
  border-radius: 16px;
}

.line-note--important {
  background: linear-gradient(180deg, #fff9ef 0%, #fff4da 100%);
  border-color: #f2d391;
}

.line-section {
  margin-top: 1.2rem;
}

.line-links {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.line-links li {
  margin: 0;
}

.line-links a {
  display: block;
  padding: 12px 14px;
  background: #f7fbff;
  border: 1px solid #d8e8f6;
  border-radius: 14px;
  color: #155e75;
  text-decoration: none;
  font-weight: 700;
}

.line-links a:hover {
  color: #164e63;
  background: #eef7ff;
  opacity: 1;
}

.line-links a::after {
  content: " ↗";
  font-weight: 400;
}

.left {
  margin: 1.5rem 0 1rem;
  padding: clamp(10px, 2vw, 18px);
  background: linear-gradient(180deg, #fafdfb 0%, #f3f8f4 100%);
  border: 1px solid #e3ece6;
  border-radius: 20px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
}

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

.left img {
  width: min(100%, 560px);
  margin: 0 auto;
}

b,
strong {
  font-weight: 700;
}

u {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

br + br {
  content: "";
}

a {
  color: #0f766e;
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: #115e59;
  opacity: 0.9;
}

.container p a {
  font-weight: 700;
}

@media (min-width: 768px) {
  .container {
    position: relative;
  }

  .container::before {
    content: "LINE お知らせ";
    position: absolute;
    top: 22px;
    right: 26px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: rgba(6, 199, 85, 0.8);
  }
}

@media (max-width: 767px) {
  body {
    padding: 12px;
  }

  body > .container,
  main > .container {
    border-radius: 18px;
    padding: 18px 14px 22px;
  }

  h4 {
    padding: 0.8rem 0.85rem;
    border-radius: 14px;
  }

  .left {
    border-radius: 16px;
  }
}

@media (max-width: 480px) {
  body {
    padding: 8px;
  }

  body > .container,
  main > .container {
    padding: 16px 12px 20px;
    border-radius: 14px;
  }

  .container > img:first-child {
    width: min(190px, 78vw);
  }

  h3 {
    font-size: 1.45rem;
  }

  h4 {
    font-size: 1rem;
    margin-top: 1.6rem;
  }

  p {
    font-size: 0.95rem;
  }

  .line-summary {
    grid-template-columns: 1fr;
  }
}