.column-page {
  background: var(--paper);
}

.column-page h1,
.column-page h2,
.column-page h3,
.column-page strong {
  text-wrap: balance;
}

.column-page p,
.column-page li {
  word-break: keep-all;
  text-wrap: pretty;
}

.column-hero {
  padding: 32px 0 92px;
  background: var(--green-deep);
  color: #fff;
}

.column-hero .detail-breadcrumbs {
  color: rgba(255,255,255,.62);
}

.column-hero .detail-breadcrumbs a,
.column-hero .detail-breadcrumbs strong {
  color: #fff;
}

.column-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(300px, .42fr);
  gap: 90px;
  align-items: end;
  padding-top: 72px;
}

.column-kicker {
  margin: 0 0 22px;
  color: #abd0c5;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .17em;
}

.column-hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(42px, 5vw, 64px);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: -.055em;
}

.column-hero h1 em {
  color: #b7d8ce;
  font-style: normal;
}

.column-hero-lead {
  margin: 0;
  color: #d4e2de;
  font-size: 15px;
  line-height: 2;
}

.column-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 25px;
  color: rgba(255,255,255,.62);
  font-size: 11px;
}

.column-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 780px);
  gap: 88px;
  justify-content: center;
  padding-block: 96px 110px;
}

.column-toc {
  align-self: start;
  position: sticky;
  top: 112px;
  padding: 24px;
  border-top: 2px solid var(--green);
  background: #edf2ee;
}

.column-toc strong {
  display: block;
  margin-bottom: 14px;
  color: var(--green);
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
}

.column-toc a {
  display: block;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
  text-decoration: none;
}

.column-toc a:hover,
.column-toc a:focus-visible {
  color: var(--green);
}

.column-article {
  min-width: 0;
}

.column-lead {
  margin: 0 0 70px;
  padding-bottom: 42px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 24px;
  line-height: 1.75;
}

.column-section {
  scroll-margin-top: 110px;
  margin-top: 72px;
}

.column-section:first-of-type {
  margin-top: 0;
}

.column-section-label {
  margin: 0 0 12px;
  color: #7b958e;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .14em;
}

.column-section h2 {
  margin: 0 0 25px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -.04em;
}

.column-section h3 {
  margin: 32px 0 12px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.5;
}

.column-section p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 2;
}

.column-key-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.column-anatomy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 32px;
}

.column-anatomy-grid figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #f4f0e7;
}

.column-anatomy-image {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-bottom: 1px solid var(--line);
  background-image: url("../images/neck-muscle-location-guide.png");
  background-repeat: no-repeat;
  background-size: 300% auto;
}

.column-anatomy-trapezius { background-position: left top; }
.column-anatomy-levator { background-position: center top; }
.column-anatomy-suboccipital { background-position: right top; }

.column-anatomy-grid figcaption {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 7px 10px;
  padding: 20px;
}

.column-anatomy-grid figcaption b {
  grid-row: 1 / 3;
  color: #7e9790;
  font-size: 10px;
  letter-spacing: .1em;
}

.column-anatomy-grid figcaption strong {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 500;
}

.column-anatomy-grid figcaption span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.column-figure-note {
  margin: 14px 0 0 !important;
  color: #74847f !important;
  font-size: 11px !important;
  line-height: 1.8 !important;
}

.column-key-card {
  padding: 26px 24px;
  border: 1px solid var(--line);
  background: #fff;
}

.column-key-card b {
  display: block;
  margin-bottom: 12px;
  color: #7e9790;
  font-size: 10px;
  letter-spacing: .12em;
}

.column-key-card strong {
  display: block;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 500;
  line-height: 1.5;
}

.column-key-card p {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.85;
}

.column-checklist {
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.column-checklist li {
  position: relative;
  padding: 19px 10px 19px 34px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.column-checklist li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 27px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--green);
}

.column-note,
.column-warning,
.column-takeaway {
  margin-top: 40px;
  padding: 30px 32px;
}

.column-note {
  border-left: 3px solid #78988e;
  background: #edf2ee;
}

.column-warning {
  border: 1px solid #c8d3cf;
  background: #f6f7f3;
}

.column-note strong,
.column-warning strong,
.column-takeaway strong {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
}

.column-note p,
.column-warning p,
.column-takeaway p {
  margin: 0;
  font-size: 13px;
  line-height: 1.9;
}

.column-takeaway {
  background: var(--green-deep);
}

.column-takeaway small {
  display: block;
  margin-bottom: 12px;
  color: #9fc3b8;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .13em;
}

.column-takeaway strong {
  color: #fff;
}

.column-takeaway p {
  color: #d1dfdb;
}

.column-source-list {
  margin: 22px 0 0;
  padding-left: 20px;
}

.column-source-list li {
  margin-top: 9px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.column-source-list a {
  color: var(--green);
}

.column-related {
  padding-block: 88px;
  background: #e8efeb;
}

.column-related-head {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  align-items: end;
  margin-bottom: 34px;
}

.column-related-head h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 500;
}

.column-related-head p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.column-related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.column-related-card {
  display: flex;
  min-height: 190px;
  flex-direction: column;
  padding: 28px;
  background: #fff;
  color: inherit;
  text-decoration: none;
}

.column-related-card small {
  color: #7c958e;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
}

.column-related-card strong {
  margin-top: 18px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.5;
}

.column-related-card span {
  margin-top: auto;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.column-blog-hero {
  padding: 28px 0 72px;
  background: var(--green-deep);
  color: #fff;
}

.column-blog-hero .detail-breadcrumbs {
  color: rgba(255,255,255,.62);
}

.column-blog-hero .detail-breadcrumbs a,
.column-blog-hero .detail-breadcrumbs strong {
  color: #fff;
}

.column-blog-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, .55fr);
  gap: 90px;
  align-items: end;
  padding-top: 46px;
}

.column-blog-hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -.055em;
}

.column-blog-hero-grid > p {
  margin: 0;
  color: #d4e2de;
  font-size: 14px;
  line-height: 2;
}

.column-blog-main {
  scroll-margin-top: 100px;
  padding-block: 92px 112px;
  background: var(--cream);
}

.column-blog-head {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(320px, .55fr);
  gap: 90px;
  align-items: end;
}

.column-blog-head h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -.045em;
}

.column-blog-head > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.9;
}

.column-filter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 44px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.column-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.column-filter button {
  padding: 10px 16px;
  border: 1px solid #cdd9d4;
  border-radius: 999px;
  background: #fff;
  color: #40504b;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: border-color .18s ease, background .18s ease, color .18s ease;
}

.column-filter button span {
  margin-left: 4px;
  color: #8a9a95;
  font-size: 10px;
}

.column-filter button:hover,
.column-filter button:focus-visible {
  border-color: var(--green);
  outline: none;
}

.column-filter button[aria-pressed="true"] {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}

.column-filter button[aria-pressed="true"] span {
  color: #c7d9d4;
}

.column-filter-status {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.column-filter-status strong {
  color: var(--green);
  font-weight: 700;
}

.column-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 34px 24px;
  margin-top: 42px;
}

.column-blog-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff;
}

.column-blog-card[hidden] {
  display: none;
}

.column-blog-image {
  display: block;
  aspect-ratio: 16 / 9.5;
  overflow: hidden;
  background: #e6ede9;
}

.column-blog-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}

.column-blog-image-guide img {
  object-position: center;
}

.column-blog-card:hover .column-blog-image img,
.column-blog-card:focus-within .column-blog-image img {
  transform: scale(1.025);
}

.column-blog-body {
  display: flex;
  min-height: 280px;
  flex: 1;
  flex-direction: column;
  padding: 25px 25px 24px;
}

.column-blog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: #8b9894;
  font-size: 10px;
}

.column-blog-meta span {
  color: var(--green);
  font-weight: 700;
}

.column-blog-card h3 {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: -.035em;
}

.column-blog-card h3 a {
  text-decoration: none;
}

.column-blog-card p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}

.column-blog-read {
  margin-top: auto;
  padding-top: 22px;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 980px) {
  .column-hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .column-hero-lead { max-width: 720px; }
  .column-layout { grid-template-columns: 1fr; gap: 46px; }
  .column-toc { position: static; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 20px; }
  .column-toc strong { grid-column: 1 / -1; }
  .column-blog-hero-grid,
  .column-blog-head { grid-template-columns: 1fr; gap: 28px; }
  .column-blog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
  .column-hero { padding: 18px 0 58px; }
  .column-hero-grid { padding-top: 42px; }
  .column-hero h1 { font-size: 34px; line-height: 1.38; }
  .column-hero-lead { font-size: 14px; line-height: 1.9; }
  .column-layout { padding-block: 64px 76px; }
  .column-toc { grid-template-columns: 1fr; padding: 20px; }
  .column-lead { margin-bottom: 54px; padding-bottom: 32px; font-size: 20px; }
  .column-section { margin-top: 58px; }
  .column-section h2 { font-size: 28px; }
  .column-section h3 { font-size: 20px; }
  .column-section p { font-size: 14px; line-height: 1.95; }
  .column-key-grid,
  .column-anatomy-grid,
  .column-related-grid { grid-template-columns: 1fr; }
  .column-anatomy-grid figcaption { padding: 18px 20px; }
  .column-key-card { padding: 23px 21px; }
  .column-note,
  .column-warning,
  .column-takeaway { padding: 24px 22px; }
  .column-related { padding-block: 68px; }
  .column-related-head { display: block; }
  .column-related-head h2 { font-size: 30px; }
  .column-related-head p { margin-top: 15px; }
  .column-related-card { min-height: 160px; }
  .column-blog-hero { padding: 18px 0 52px; }
  .column-blog-hero-grid { padding-top: 34px; }
  .column-blog-hero h1 { font-size: 42px; }
  .column-blog-hero-grid > p { font-size: 13px; line-height: 1.9; }
  .column-blog-main { padding-block: 64px 86px; }
  .column-blog-head h2 { font-size: 31px; }
  .column-blog-head > p { font-size: 12px; }
  .column-filter-row { display: block; margin-top: 32px; padding-block: 18px; }
  .column-filter { flex-wrap: nowrap; margin-inline: -18px; padding-inline: 18px; overflow-x: auto; scrollbar-width: none; }
  .column-filter::-webkit-scrollbar { display: none; }
  .column-filter button { flex: 0 0 auto; }
  .column-filter-status { margin-top: 14px; }
  .column-blog-grid { grid-template-columns: 1fr; gap: 22px; margin-top: 30px; }
  .column-blog-body { min-height: 250px; padding: 23px 21px 22px; }
  .column-blog-card h3 { font-size: 21px; }
}