.post-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
  width: 100%;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.post-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--green-deep);
}

.post-masthead {
  padding: clamp(3.2rem, 8vw, 6.5rem) 0 clamp(2.4rem, 5vw, 3.6rem);
  border-bottom: 1px solid var(--line);
}

.post-wrap {
  width: min(100%, var(--max));
  min-width: 0;
  margin: 0 auto;
  padding: 0 var(--pad);
}

.post-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.7rem;
  margin: 0 0 1.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.post-breadcrumb a {
  text-decoration: none;
  color: var(--ink-soft);
}

.post-breadcrumb a:hover {
  color: var(--ink);
}

.post-meta-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.1rem;
  margin: 0 0 1.3rem;
}

.cat-chip {
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green-deep);
}

.post-date-inline {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
}

.post-masthead h1 {
  margin: 0 0 1.2rem;
  max-width: 16ch;
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 6.2rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 0.92;
}

.post-lead {
  max-width: 36rem;
  margin: 0 0 1.4rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.65;
}

.post-meta-bar {
  max-width: 36rem;
  color: var(--ink-mute);
  font-size: 0.88rem;
}

.post-body-section {
  padding: clamp(2.8rem, 6vw, 4.8rem) 0 clamp(3.2rem, 6vw, 5rem);
}

.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(15rem, 0.72fr);
  gap: clamp(2.4rem, 6vw, 5.5rem);
  align-items: start;
  min-width: 0;
}

.post-article {
  min-width: 0;
  overflow-wrap: break-word;
}

.post-article h2 {
  margin: 2.6rem 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1;
}

.post-article h2:first-child {
  margin-top: 0;
}

.post-article h3 {
  margin: 1.8rem 0 0.7rem;
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.2vw, 1.7rem);
  font-weight: 400;
  letter-spacing: -0.03em;
}

.post-article p,
.post-article li {
  color: var(--ink-soft);
}

.post-article p {
  margin: 0 0 1rem;
  max-width: 42rem;
}

.post-article ul,
.post-article ol:not(.step-list) {
  margin: 0 0 1.2rem;
  padding-left: 1.2rem;
}

.post-article li + li {
  margin-top: 0.4rem;
}

.post-article a:not(.btn) {
  color: var(--ink);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.callout {
  max-width: 42rem;
  margin: 0 0 1.6rem;
  padding: 1.15rem 1.2rem;
  border-left: 3px solid var(--green-deep);
  background: var(--paper-strong);
}

.callout.tip {
  border-left-color: var(--green);
}

.callout.warning {
  border-left-color: var(--ink);
}

.callout p:last-child {
  margin-bottom: 0;
}

.data-table-wrap {
  max-width: 100%;
  min-width: 0;
  margin: 0 0 1.4rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 0.85rem 0.9rem 0.85rem 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.data-table th {
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
}

.data-table td {
  color: var(--ink-soft);
}

.data-table td:first-child {
  color: var(--ink);
}

.step-list {
  margin: 0 0 1.3rem;
  padding: 0;
  list-style: none;
  counter-reset: post-step;
}

.step-list li {
  position: relative;
  padding: 0.85rem 0 0.85rem 3.2rem;
  border-top: 1px solid var(--line);
  max-width: 42rem;
}

.step-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.step-list li::before {
  counter-increment: post-step;
  content: counter(post-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-mute);
}

.post-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.3rem;
  margin: 0.4rem 0 1.2rem;
}

.post-inline a {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
}

.post-cta {
  margin-top: 2.6rem;
  padding: 1.6rem 0 0;
  border-top: 1px solid var(--line);
}

.post-cta h2 {
  margin-top: 0;
}

.post-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.3rem;
}

.post-aside {
  position: sticky;
  top: calc(var(--header-h) + 1.4rem);
  padding-top: 0.15rem;
}

.post-aside-kicker {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.post-aside h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.post-aside p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

.post-toc {
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.post-toc a {
  display: block;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.post-toc a:hover,
.post-toc a.is-active {
  color: var(--ink);
}

.post-finder {
  display: grid;
  gap: 1.1rem;
  margin-top: 0.4rem;
}

.post-finder label {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.post-finder .site-select-trigger {
  font-size: clamp(1.15rem, 2vw, 1.5rem);
}

@media (max-width: 980px) {
  .post-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .post-aside {
    position: static;
    order: -1;
    padding-top: 0.4rem;
    padding-bottom: 1.6rem;
    border-bottom: 1px solid var(--line);
  }

  .post-toc {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 1rem;
    margin-bottom: 2.2rem;
  }

  .post-toc a {
    border: 0;
    padding: 0.2rem 0;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }

  .data-table {
    width: 100%;
    min-width: 0;
    table-layout: fixed;
  }
}