.art-hero { padding: clamp(80px,11vw,140px) 0 clamp(46px,6vw,70px); }
.art-hero__meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 20px; }
.art-hero__meta i { color: var(--accent); margin-right: 6px; }
.art-hero h1 { max-width: 20ch; }
.art-hero .media-frame { aspect-ratio: 21/9; margin-top: clamp(30px,4vw,50px); }

.art-layout { display: grid; grid-template-columns: 270px 1fr; gap: clamp(30px,5vw,80px); align-items: start; }
.art-toc { position: sticky; top: calc(var(--header-h) + 30px); padding: 26px; border-radius: var(--radius-m); background: var(--surface); border: 1px solid var(--line-soft); }
.art-toc__title { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 16px; }
.art-toc a { display: block; padding: 9px 0; font-size: 0.86rem; color: var(--ink-2); border-bottom: 1px dashed var(--line-soft); transition: color 0.25s, padding-left 0.25s; }
.art-toc a:hover { color: var(--accent); padding-left: 8px; }
.art-toc a:last-child { border-bottom: 0; }

.tip-box { display: flex; gap: 16px; padding: 24px 28px; border-radius: var(--radius-m); background: var(--amber-soft); margin: 34px 0; }
.tip-box i { color: var(--amber); font-size: 1.3rem; margin-top: 2px; }
.tip-box p { margin: 0; font-size: 0.92rem; color: #6b4c14; }
.tip-box b { display: block; margin-bottom: 4px; color: #50370c; }

.author-band { display: flex; gap: 20px; align-items: center; padding: 28px; border-radius: var(--radius-l); background: var(--surface); border: 1px solid var(--line-soft); margin-top: 50px; }
.author-band img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; }
.author-band h4 { font-family: var(--font-display); font-size: 1.15rem; margin: 0 0 4px; }
.author-band p { font-size: 0.85rem; color: var(--ink-2); margin: 0; }

@media (max-width: 900px) {
  .art-layout { grid-template-columns: 1fr; }
  .art-toc { position: static; }
  .author-band { flex-direction: column; text-align: center; }
}