/* Article context and author disclosure; the preserved footer card is untouched. */
.w-article-head .editor-byline.article-metadata-v9 {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin-top: 24px;
  font-size: 14px;
  line-height: 1.65;
}

.article-concept-v9 {
  max-width: 100%;
  color: var(--ink);
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.article-concept-ko-v9 { font-weight: 550; }
.article-concept-en-v9 { color: var(--muted); font-weight: 400; }

.article-byline-details-v9 {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0 10px;
  font-size: 13px;
  line-height: 1.5;
}

.editor-byline .editor-info-trigger-v9 {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 5px;
  min-height: 44px;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
}

.editor-info-prefix-v9 { color: var(--muted); }
.editor-info-chevron-v9 { display: block; margin-left: 2px; }
.editor-info-trigger-v9[aria-expanded="true"] .editor-info-chevron-v9 { transform: rotate(180deg); }
.article-reading-time-v9 { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; color: var(--muted); }

.editor-byline .editor-info-trigger-v9:hover > span:last-of-type {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.editor-byline .editor-info-trigger-v9:focus-visible,
.editor-popover-v9 :is(a, button):focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.editor-popover-v9 {
  position: fixed;
  inset: auto;
  top: var(--editor-popover-top, 0px);
  left: var(--editor-popover-left, 0px);
  width: min(300px, calc(100vw - 24px));
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
  color: var(--ink);
  font: 400 14px/1.65 var(--font);
  box-shadow: 0 8px 32px #23242620;
  box-sizing: border-box;
  overflow: visible;
}

.editor-popover-v9::backdrop { background: transparent; }
.editor-popover-v9::before {
  content: "";
  position: absolute;
  top: -6px;
  left: var(--editor-popover-arrow, 32px);
  width: 10px;
  height: 10px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--paper);
  transform: rotate(45deg);
}

.editor-popover-v9[data-placement="above"]::before {
  top: auto;
  bottom: -6px;
  transform: rotate(225deg);
}

.editor-popover-content-v9 {
  display: grid;
  gap: 12px;
  padding: 16px 16px 8px;
  max-height: var(--editor-popover-max-height, calc(100dvh - 24px));
  overflow-y: auto;
  box-sizing: border-box;
}

/* Reserve the close target in the heading; its position belongs to the card. */
.editor-popover-heading-v9 { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 10px; align-items: center; padding-inline-end: 44px; }
.editor-popover-avatar-v9 { display: block; width: 36px; height: 36px; border-radius: 9px; object-fit: cover; }
.editor-popover-identity-v9 small { display: block; color: var(--muted); font-size: 11px; line-height: 1.5; }
.editor-popover-identity-v9 h2 { margin: 0; font: 550 16px/1.5 var(--font); letter-spacing: -.02em; overflow-wrap: anywhere; }
.editor-popover-bio-v9 { margin: 0; font-size: 13px; line-height: 20px; color: var(--muted); word-break: keep-all; overflow-wrap: anywhere; }
/* A 30px circle is visual feedback inside an independent 44px hit target. */
.editor-popover-v9 :is(.editor-popover-close-v9, .editor-popover-links-v9 a) { display: inline-flex; align-items: center; justify-content: center; isolation: isolate; width: 44px; height: 44px; padding: 0; border: 0; border-radius: 50%; background: transparent; cursor: pointer; }
.editor-popover-v9 :is(.editor-popover-close-v9, .editor-popover-links-v9 a)::before { content: ""; position: absolute; inset: 7px; z-index: -1; border-radius: 50%; background: transparent; transition: background var(--duration) var(--ease); pointer-events: none; }
.editor-popover-close-v9 { position: absolute; top: 6px; right: 6px; z-index: 1; color: var(--muted); }
.editor-popover-close-v9:hover { color: var(--ink); }
.editor-popover-v9 :is(.editor-popover-close-v9, .editor-popover-links-v9 a):hover::before { background: var(--surface); }
.editor-popover-v9 :is(.editor-popover-close-v9, .editor-popover-links-v9 a):focus-visible { outline: none; }
.editor-popover-v9 :is(.editor-popover-close-v9, .editor-popover-links-v9 a):focus-visible::before { outline: 2px solid var(--focus); outline-offset: 2px; }
.editor-popover-links-v9 { display: flex; align-items: center; gap: 4px; margin: -4px 0 0 -10px; }
.editor-popover-links-v9 a { position: relative; color: var(--ink); }
.editor-popover-links-v9 img { display: block; width: 18px; height: 18px; opacity: .82; }

@media (max-width: 760px) {
  .w-article-head .editor-byline.article-metadata-v9 { margin-top: 16px; gap: 4px; font-size: 13px; }
  .article-byline-details-v9 { font-size: 12px; }
}