* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f7f7f4;
  color: #14253d;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 42px 18px 56px;
}

a {
  color: #176b50;
  font-weight: 700;
}

.hero {
  display: grid;
  gap: 18px;
  padding: 24px;
  background: #ffffff;
  border: 1px solid #e5e4de;
  border-radius: 14px;
}

.hero img {
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: 12px;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.08;
}

h2 {
  margin-top: 32px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 8px 11px;
  background: #e6f3ec;
  color: #176b50;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  padding: 16px;
  background: #ffffff;
  border: 1px solid #e5e4de;
  border-radius: 12px;
}

.card strong {
  display: block;
  margin-bottom: 6px;
}

.card p {
  margin: 0;
}

.breadcrumbs {
  margin-bottom: 18px;
  color: #617085;
  font-size: 13px;
}

.rich-copy p + p {
  margin-top: 12px;
}

.longform-intro {
  margin-top: 34px;
  padding: 18px;
  background: #eef6f0;
  border: 1px solid #d6eadc;
  border-radius: 12px;
}

.long-card {
  margin-top: 18px;
  padding: 18px;
  background: #ffffff;
  border: 1px solid #e5e4de;
  border-radius: 12px;
}

.long-card h3 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.2;
}

.long-card p {
  margin: 0 0 12px;
}

.backlink-share {
  margin-top: 24px;
  padding: 18px;
  background: #fff7df;
  border: 1px solid #edd28b;
  border-radius: 12px;
}

.backlink-share h2 {
  margin-top: 0;
}

.backlink-share p {
  margin: 0;
}

.backlink-share p + p {
  margin-top: 10px;
}

.matrix {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 14px 0;
}

.matrix div {
  padding: 12px;
  background: #f7f7f4;
  border: 1px solid #e5e4de;
  border-radius: 10px;
}

.matrix strong,
.matrix span {
  display: block;
}

.matrix span {
  margin-top: 5px;
  color: #617085;
}

.detail-list {
  margin: 10px 0 14px;
  padding-left: 22px;
}

.detail-list li + li {
  margin-top: 6px;
}

.mini-nav,
.hub-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.mini-nav a,
.hub-list a {
  padding: 12px 14px;
  background: #ffffff;
  border: 1px solid #e5e4de;
  border-radius: 10px;
  text-decoration: none;
}

.hub-list {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

footer {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid #e5e4de;
  color: #617085;
  font-size: 13px;
}