body{margin:0;min-height:100dvh;background-color:var(--c-bg-secondary)}.book-landing[data-astro-cid-ipwut5j4]{max-width:680px;margin:0 auto;padding:0 var(--sp-md)}.book-header[data-astro-cid-ipwut5j4]{padding:var(--sp-lg) 0;display:flex;align-items:center;justify-content:space-between}.book-share-btn[data-astro-cid-ipwut5j4]{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:none;border:none;color:var(--c-text-sub);cursor:pointer;border-radius:var(--radius-md);transition:color var(--transition-fast),background-color var(--transition-fast)}.book-share-btn[data-astro-cid-ipwut5j4]:hover{color:var(--c-text);background-color:var(--c-bg)}.book-share-btn[data-astro-cid-ipwut5j4].copied{color:var(--c-success)}.book-home-link[data-astro-cid-ipwut5j4]{display:inline-flex;align-items:center;gap:var(--sp-xs);color:var(--c-text-sub);text-decoration:none;font-size:var(--fs-sm);transition:color var(--transition-fast)}.book-home-link[data-astro-cid-ipwut5j4]:hover{color:var(--c-text)}.book-cover[data-astro-cid-ipwut5j4]{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--sp-3xl) var(--sp-lg);background-color:var(--c-bg);border-radius:var(--radius-2xl);box-shadow:var(--shadow-sm);margin-bottom:var(--sp-2xl)}.book-cover-icon[data-astro-cid-ipwut5j4]{display:flex;align-items:center;justify-content:center;width:80px;height:80px;border-radius:var(--radius-xl);background-color:var(--c-accent);color:var(--c-primary);margin-bottom:var(--sp-lg)}.book-title[data-astro-cid-ipwut5j4]{font-size:var(--fs-2xl);font-weight:700;color:var(--c-text);margin:0 0 var(--sp-sm);line-height:var(--lh-tight)}@media(min-width:600px){.book-title[data-astro-cid-ipwut5j4]{font-size:var(--fs-3xl)}}.book-subtitle[data-astro-cid-ipwut5j4]{font-size:var(--fs-base);color:var(--c-text-sub);margin:0 0 var(--sp-lg);line-height:var(--lh-relaxed)}@media(min-width:600px){.book-subtitle[data-astro-cid-ipwut5j4]{font-size:var(--fs-md)}}.book-meta[data-astro-cid-ipwut5j4]{display:flex;gap:var(--sp-sm);font-size:var(--fs-sm);color:var(--c-text-light);margin-bottom:var(--sp-xl)}.book-start-btn[data-astro-cid-ipwut5j4]{display:inline-flex;align-items:center;justify-content:center;padding:var(--sp-md) var(--sp-2xl);background-color:var(--c-primary);color:var(--c-text-inverse);text-decoration:none;font-size:var(--fs-base);font-weight:600;border-radius:var(--radius-lg);transition:background-color var(--transition-fast),transform var(--transition-fast)}.book-start-btn[data-astro-cid-ipwut5j4]:hover{background-color:var(--c-primary-light)}.book-start-btn[data-astro-cid-ipwut5j4]:active{transform:scale(.98)}.book-toc[data-astro-cid-ipwut5j4]{margin-bottom:var(--sp-3xl)}.book-toc-title[data-astro-cid-ipwut5j4]{font-size:var(--fs-lg);font-weight:700;color:var(--c-text);margin:0 0 var(--sp-lg)}.book-chapter[data-astro-cid-ipwut5j4]{margin-bottom:var(--sp-xl)}.book-chapter-title[data-astro-cid-ipwut5j4]{display:flex;align-items:center;justify-content:space-between;font-size:var(--fs-base);font-weight:600;color:var(--c-text);margin:0 0 var(--sp-sm);padding-bottom:var(--sp-sm);border-bottom:1px solid var(--c-border-light)}.book-chapter-count[data-astro-cid-ipwut5j4]{font-size:var(--fs-xs);font-weight:400;color:var(--c-text-light)}.book-article-list[data-astro-cid-ipwut5j4]{list-style:none;margin:0;padding:0;counter-reset:none}.book-article-item[data-astro-cid-ipwut5j4]:not(:last-child){border-bottom:1px solid var(--c-border-light)}.book-article-link[data-astro-cid-ipwut5j4]{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-md);padding:var(--sp-md) var(--sp-sm);color:var(--c-text);text-decoration:none;transition:background-color var(--transition-fast),color var(--transition-fast);border-radius:var(--radius-md)}.book-article-link[data-astro-cid-ipwut5j4]:hover{background-color:var(--c-bg);color:var(--c-primary)}.book-article-title[data-astro-cid-ipwut5j4]{font-size:var(--fs-sm);line-height:var(--lh-normal)}@media(min-width:600px){.book-article-title[data-astro-cid-ipwut5j4]{font-size:var(--fs-base)}}.book-article-arrow[data-astro-cid-ipwut5j4]{flex-shrink:0;color:var(--c-text-light);display:flex;align-items:center}.book-footer[data-astro-cid-ipwut5j4]{padding:var(--sp-2xl) var(--sp-lg);text-align:center;background-color:var(--c-bg);border-radius:var(--radius-2xl) var(--radius-2xl) 0 0;box-shadow:var(--shadow-sm);margin-left:calc(-1 * var(--sp-md));margin-right:calc(-1 * var(--sp-md));width:calc(100% + var(--sp-md) * 2)}.book-company[data-astro-cid-ipwut5j4]{margin-bottom:var(--sp-xl)}.book-company-name[data-astro-cid-ipwut5j4]{font-size:var(--fs-md);font-weight:700;color:var(--c-text);margin:0 0 var(--sp-sm)}.book-company-desc[data-astro-cid-ipwut5j4]{font-size:var(--fs-sm);color:var(--c-text-sub);line-height:var(--lh-relaxed);margin:0 0 var(--sp-md)}.book-company-link[data-astro-cid-ipwut5j4]{font-size:var(--fs-sm);color:var(--c-text);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}.book-company-link[data-astro-cid-ipwut5j4]:hover{color:var(--c-primary-light)}.book-copyright[data-astro-cid-ipwut5j4]{color:var(--c-text-light);font-size:var(--fs-xs);margin:0}