/* =========================================================================
   MMR Blog Post layout — depends on theme.css (tokens + utilities).
   3-column shell: scroll-spy TOC · article · sticky tray.
   ========================================================================= */

.blog-wrap { max-width: 1360px; margin: 0 auto; padding: 40px 56px 96px; }
.blog-grid {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr) 320px;
  gap: 56px;
  align-items: start;
}

/* ---------------- breadcrumb ---------------- */
.blog-crumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-3); margin-bottom: 28px; }
.blog-crumb a { color: var(--ink-3); }
.blog-crumb a:hover { color: var(--ink); }
.blog-crumb svg { opacity: 0.5; }

/* =========================================================================
   LEFT — table of contents (scroll-spy)
   ========================================================================= */
.blog-toc { position: sticky; top: 96px; align-self: start; }
.blog-toc-label { font-size: 12px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 18px; }
.blog-toc-nav { position: relative; display: flex; flex-direction: column; }
.blog-toc-nav::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 2px; background: var(--border); border-radius: 2px; }
.blog-toc-thumb { position: absolute; left: 0; width: 2px; border-radius: 2px; background: var(--grad-brand); transition: top .35s cubic-bezier(.4,0,.2,1), height .35s cubic-bezier(.4,0,.2,1); }
.toc-link {
  position: relative; padding: 9px 0 9px 18px; font-size: 13.5px; line-height: 1.35;
  color: var(--ink-3); transition: color .2s ease; border: none; background: none; text-align: left; cursor: pointer;
}
.toc-link:hover { color: var(--ink-2); }
.toc-link.is-active { color: var(--ink); font-weight: 600; }

/* =========================================================================
   CENTER — article
   ========================================================================= */
.blog-main { min-width: 0; max-width: 720px; }

.post-cat { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue-600); margin-bottom: 18px; }
.post-cat .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--grad-brand); }
.post-title { font-family: var(--font-heading); font-weight: 600; font-size: clamp(34px, 4.4vw, 54px); line-height: 1.08; letter-spacing: -0.02em; color: var(--ink); margin: 0 0 20px; }
.post-teaser { font-size: 20px; line-height: 1.55; color: var(--ink-2); margin: 0 0 30px; font-weight: 400; }

.post-meta { display: flex; align-items: center; gap: 16px; padding: 18px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin-bottom: 36px; flex-wrap: wrap; }
.post-author { display: flex; align-items: center; gap: 12px; }
.post-avatar { width: 46px; height: 46px; border-radius: 50%; flex-shrink: 0; display: grid; place-items: center; font-weight: 700; font-size: 16px; color: #fff; background: var(--grad-brand); }
.post-author-name { font-size: 14.5px; font-weight: 600; color: var(--ink); }
.post-author-role { font-size: 13px; color: var(--ink-3); }
.post-meta-sep { width: 1px; height: 30px; background: var(--border); }
.post-meta-item { display: flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--ink-3); }
.post-meta-item svg { color: var(--ink-4); }

/* hero image */
.post-hero { margin: 0 0 40px; }
.post-hero .t-frame, .post-hero .blog-figure-box { aspect-ratio: 16 / 9; }
.blog-figure-box {
  position: relative; border-radius: var(--r-lg); overflow: hidden; display: grid; place-items: center;
  background: radial-gradient(120% 90% at 50% 0%, rgba(59,130,246,0.12), transparent 60%), var(--card-bg);
  border: 1px solid var(--border); box-shadow: var(--shadow-card); min-height: 220px;
}
.blog-figure-box img { width: 100%; height: 100%; object-fit: cover; display: block; }
.blog-figure-label { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--ink-4); font-family: ui-monospace, monospace; font-size: 12px; letter-spacing: 0.04em; }
figure.blog-figure { margin: 40px 0; }
figure.blog-figure figcaption { margin-top: 12px; font-size: 13.5px; color: var(--ink-3); text-align: center; }

/* =========================================================================
   KEY POINTS box
   ========================================================================= */
.key-points {
  position: relative; margin: 0 0 44px; padding: 28px 30px 28px 32px; border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(59,130,246,0.08), rgba(6,182,212,0.05));
  border: 1px solid rgba(59,130,246,0.2); overflow: hidden;
}
.key-points::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--grad-brand); }
.key-points-head { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--blue-600); margin-bottom: 16px; }
.key-points-head svg { color: var(--blue-500); }
.key-points ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.key-points li { display: flex; gap: 12px; align-items: flex-start; font-size: 15.5px; line-height: 1.5; color: var(--ink-2); }
.key-points .tick { flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%; margin-top: 1px; background: rgba(59,130,246,0.16); color: var(--blue-600); display: grid; place-items: center; }

/* =========================================================================
   ARTICLE BODY — rich stylistic elements
   ========================================================================= */
.blog-body { }
.blog-section { scroll-margin-top: 96px; padding-top: 8px; }
.blog-section + .blog-section { margin-top: 12px; }
.blog-h2 {
  display: flex; align-items: baseline; gap: 14px;
  font-family: var(--font-heading); font-weight: 600; font-size: clamp(26px, 3vw, 34px);
  line-height: 1.15; letter-spacing: -0.018em; color: var(--ink); margin: 44px 0 18px;
}
.blog-h2 .sec-num { font-size: 15px; font-weight: 700; color: var(--blue-500); font-family: var(--font-sans); letter-spacing: 0.06em; flex-shrink: 0; }
.blog-h3 { font-family: var(--font-heading); font-weight: 600; font-size: 21px; color: var(--ink); margin: 32px 0 12px; letter-spacing: -0.01em; }
.blog-body p { font-size: 17px; line-height: 1.72; color: var(--ink-2); margin: 0 0 20px; }
.blog-body a.inline { color: var(--blue-600); border-bottom: 1px solid rgba(59,130,246,0.35); }
.blog-body a.inline:hover { border-bottom-color: var(--blue-600); }
.blog-body strong { color: var(--ink); font-weight: 600; }

/* bulleted / numbered lists */
.blog-list { list-style: none; margin: 0 0 24px; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.blog-list li { position: relative; padding-left: 30px; font-size: 16.5px; line-height: 1.6; color: var(--ink-2); }
.blog-list li::before { content: ""; position: absolute; left: 4px; top: 10px; width: 8px; height: 8px; border-radius: 50%; background: var(--grad-brand); }
.blog-list.check li::before { content: none; }
.blog-list.check li { padding-left: 34px; }
.blog-list.check .tick { position: absolute; left: 0; top: 1px; width: 22px; height: 22px; border-radius: 50%; background: rgba(16,185,129,0.14); color: var(--green-500); display: grid; place-items: center; }

/* pull quote */
.blog-quote {
  margin: 40px 0; padding: 8px 0 8px 30px; border-left: 4px solid transparent;
  border-image: var(--grad-brand) 1; 
}
.blog-quote p { font-family: var(--font-heading); font-weight: 500; font-style: italic; font-size: clamp(22px, 2.6vw, 28px); line-height: 1.4; color: var(--ink); margin: 0 0 12px; }
.blog-quote cite { font-style: normal; font-size: 14px; font-weight: 600; color: var(--ink-3); }

/* callout / note box */
.blog-callout {
  display: flex; gap: 16px; margin: 32px 0; padding: 22px 24px; border-radius: var(--r-md);
  background: var(--card-bg); border: 1px solid var(--border); box-shadow: var(--shadow-card);
}
.blog-callout-ic { flex-shrink: 0; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; }
.blog-callout.tip .blog-callout-ic { background: rgba(16,185,129,0.12); color: var(--green-500); }
.blog-callout.info .blog-callout-ic { background: rgba(59,130,246,0.12); color: var(--blue-500); }
.blog-callout.warn .blog-callout-ic { background: rgba(236,72,153,0.12); color: var(--pink-500); }
.blog-callout-title { font-size: 15px; font-weight: 700; color: var(--ink); margin: 2px 0 5px; }
.blog-callout p { font-size: 15px; line-height: 1.6; color: var(--ink-3); margin: 0; }

/* icon feature row inside article */
.blog-iconrow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 32px 0; }
.blog-iconcard { padding: 22px 20px; border-radius: var(--r-md); background: var(--card-bg); border: 1px solid var(--border); }
.blog-iconcard .ic { width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center; background: rgba(59,130,246,0.12); color: var(--blue-500); margin-bottom: 14px; }
.blog-iconcard h4 { margin: 0 0 6px; font-size: 15.5px; font-weight: 600; color: var(--ink); }
.blog-iconcard p { margin: 0; font-size: 13.5px; line-height: 1.5; color: var(--ink-3); }

/* stat strip */
.blog-stat { display: flex; align-items: baseline; gap: 14px; margin: 36px 0; padding: 24px 28px; border-radius: var(--r-lg); background: linear-gradient(180deg, #0B1426, #0F1525); color: #fff; }
.blog-stat .num { font-family: var(--font-heading); font-weight: 600; font-size: 48px; line-height: 1; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.blog-stat .txt { font-size: 15.5px; line-height: 1.5; color: rgba(255,255,255,0.8); }

.blog-divider { height: 1px; background: var(--border); margin: 44px 0; border: none; }

/* end / share footer */
.post-end { margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.post-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.post-tag { font-size: 12.5px; font-weight: 500; color: var(--ink-2); background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; padding: 6px 13px; }
.post-share { display: flex; gap: 8px; }
.post-share a { width: 38px; height: 38px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); display: grid; place-items: center; color: var(--ink-3); transition: all .2s ease; }
.post-share a:hover { color: var(--ink); border-color: var(--border-strong); transform: translateY(-2px); }

/* =========================================================================
   RIGHT — sticky tray
   ========================================================================= */
.blog-tray { position: sticky; top: 96px; align-self: start; display: flex; flex-direction: column; gap: 24px; }
.tray-card { padding: 24px; border-radius: var(--r-lg); background: var(--card-bg); border: 1px solid var(--border); box-shadow: var(--shadow-card); }
.tray-label { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 18px; }

/* popular articles */
.pop-item { display: flex; gap: 14px; padding: 14px 0; border-top: 1px solid var(--border); }
.pop-item:first-of-type { border-top: none; padding-top: 0; }
.pop-thumb { width: 58px; height: 58px; border-radius: 12px; flex-shrink: 0; overflow: hidden; display: grid; place-items: center; background: radial-gradient(120% 100% at 50% 0%, rgba(59,130,246,0.14), transparent 65%), var(--surface-2); border: 1px solid var(--border); color: var(--ink-4); }
.pop-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.pop-item a { display: block; font-size: 14.5px; font-weight: 600; line-height: 1.35; color: var(--ink); transition: color .2s ease; }
.pop-item a:hover { color: var(--blue-600); }
.pop-item .pop-meta { font-size: 12.5px; color: var(--ink-3); margin-top: 5px; }

/* newsletter */
.tray-news { background: linear-gradient(165deg, #0B1426 0%, #0F1525 100%); color: #fff; position: relative; overflow: hidden; }
.tray-news::after { content: ""; position: absolute; top: -60px; right: -50px; width: 200px; height: 200px; border-radius: 50%; background: radial-gradient(circle, rgba(106,227,245,0.35), transparent 70%); pointer-events: none; }
.tray-news .tray-label { color: var(--cyan-500); }
.tray-news h3 { font-family: var(--font-heading); font-weight: 600; font-size: 22px; line-height: 1.15; margin: 0 0 10px; color: #fff; position: relative; }
.tray-news p { font-size: 14px; line-height: 1.55; color: rgba(255,255,255,0.72); margin: 0 0 18px; position: relative; }
.tray-news .news-form { display: flex; flex-direction: column; gap: 10px; position: relative; }
.tray-news input { width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.16); background: rgba(255,255,255,0.06); color: #fff; font-size: 14px; font-family: inherit; }
.tray-news input::placeholder { color: rgba(255,255,255,0.5); }
.tray-news input:focus { outline: none; border-color: var(--cyan-500); }
.tray-news button { padding: 12px 16px; border-radius: 10px; background: var(--grad-brand); color: #fff; font-weight: 600; font-size: 14.5px; box-shadow: 0 8px 22px rgba(59,130,246,0.4); }
.tray-news button:hover { transform: translateY(-1px); }
.tray-news .news-fine { font-size: 11.5px; color: rgba(255,255,255,0.5); margin: 12px 0 0; position: relative; }

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width: 1100px) {
  .blog-grid { grid-template-columns: minmax(0,1fr) 300px; }
  .blog-toc { display: none; }
}
@media (max-width: 860px) {
  .blog-wrap { padding: 32px 24px 72px; }
  .blog-grid { grid-template-columns: 1fr; gap: 40px; }
  .blog-tray { position: static; }
  .blog-iconrow { grid-template-columns: 1fr; }
  .post-teaser { font-size: 18px; }
}