/* Book: warm guidebook with chapter-style cards */
.tg-layout-book .site-header { background: #fff; border-bottom: 2px solid color-mix(in srgb, var(--tg-primary) 30%, #fff); }
.tg-layout-book .topbar { background: var(--tg-primary); }
.tg-layout-book .hero { background: linear-gradient(150deg, color-mix(in srgb, var(--tg-primary) 14%, #fff) 0%, #fff 60%); color: var(--tg-heading); border-radius: 0 0 40px 40px; }
.tg-layout-book .hero-title { color: var(--tg-heading); }
.tg-layout-book .hero-desc { color: #4b6a58; }
.tg-layout-book .hero-kicker { background: #fff; color: var(--tg-primary); box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.tg-layout-book .hero-bubble { background: #fff; border-color: color-mix(in srgb, var(--tg-primary) 25%, #fff); box-shadow: 0 8px 20px rgba(0,0,0,.06); }
.tg-layout-book .section-head h2::after { content: ""; display: block; width: 48px; height: 4px; border-radius: 4px; background: var(--tg-accent); margin: 10px auto 0; }
.tg-layout-book .category-grid { grid-template-columns: repeat(3, 1fr); gap: 22px; }
.tg-layout-book .cat-card { background: #fff; border: 1px solid color-mix(in srgb, var(--tg-primary) 18%, #fff); border-radius: 20px; box-shadow: 0 4px 16px rgba(0,0,0,.05); }
.tg-layout-book .cat-card::before { content: attr(data-num); font-size: 34px; font-weight: 800; color: color-mix(in srgb, var(--tg-primary) 25%, transparent); position: absolute; top: 8px; right: 18px; }
.tg-layout-book .cat-card { position: relative; }
.tg-layout-book .post-card { border-radius: 20px; box-shadow: 0 4px 16px rgba(0,0,0,.05); }
.tg-layout-book .post-card-media { border-radius: 20px 20px 0 0; }
.tg-layout-book .post-cat { background: #fff; border: 1px solid color-mix(in srgb, var(--tg-primary) 30%, #fff); }
.tg-layout-book .friendlinks-section { background: color-mix(in srgb, var(--tg-primary) 6%, #fff); }
.tg-layout-book .friend-card { background: #fff; border-radius: 16px; border-style: solid; }
.tg-layout-book .article { border-radius: 22px; box-shadow: 0 6px 24px rgba(0,0,0,.05); }
.tg-layout-book .article-body h2 { border-bottom: 0; position: relative; padding-left: 18px; }
.tg-layout-book .article-body h2::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 5px; border-radius: 4px; background: var(--tg-primary); }
.tg-layout-book .article-body ol { counter-reset: tg-step; list-style: none; padding-left: 0; }
.tg-layout-book .article-body ol > li { counter-increment: tg-step; position: relative; padding-left: 42px; margin-bottom: 12px; }
.tg-layout-book .article-body ol > li::before { content: counter(tg-step); position: absolute; left: 0; top: 2px; width: 28px; height: 28px; border-radius: 50%; background: var(--tg-primary); color: #fff; font-weight: 700; font-size: 14px; display: flex; align-items: center; justify-content: center; }
.tg-layout-book .widget { border-radius: 18px; box-shadow: 0 4px 16px rgba(0,0,0,.05); }