.books-page{--bk-nav-h:56px;--bk-row-w:640px;width:min(1088px,100% - 3rem);margin:0 auto;padding-bottom:5rem}.books-page .bk-progress{top:var(--bk-nav-h);z-index:45;pointer-events:none;background:color-mix(in srgb, var(--accent) 12%, transparent);height:2px;position:fixed;left:0;right:0;overflow:hidden}.books-page .bk-progress:after{content:"";background:linear-gradient(90deg, transparent, var(--accent), transparent);border-radius:999px;width:38%;animation:1.1s ease-in-out infinite bkProgress;position:absolute;top:0;bottom:0}@keyframes bkProgress{0%{left:-40%}to{left:100%}}.books-page .bk-hero{padding-top:3.5rem}.books-page .bk-hero-title em{color:var(--accent-bright);font-style:normal}.books-page .bk-hero-sub{color:var(--text-dim);max-width:460px;margin-top:1rem;font-size:.97rem;line-height:1.65}.books-page .bk-head{padding-top:.75rem}.books-page .bk-title{letter-spacing:-.02em;color:var(--text);overflow-wrap:anywhere;margin:0;font-size:1.75rem;font-weight:700;line-height:1.15}.books-page .bk-sub{color:var(--text-dim);margin:.35rem 0 0;font-size:.8125rem}.books-page .bk-search-row{max-width:var(--bk-row-w);transition:margin-left .42s var(--ease-out,ease);gap:.625rem;margin-left:0;display:flex}@media (prefers-reduced-motion:reduce){.books-page .bk-search-row{transition:none}}.books-page .bk-field{box-sizing:border-box;background:var(--bg);border:1px solid var(--glass-border);min-width:0;min-height:50px;transition:border-color .18s var(--ease-out,ease), box-shadow .18s var(--ease-out,ease);border-radius:12px;flex:1;align-items:center;gap:.7rem;padding:.875rem 1rem;display:flex;position:relative}.books-page .bk-field:focus-within{border-color:var(--accent-bright);box-shadow:0 0 0 3px color-mix(in srgb, var(--accent-bright) 14%, transparent)}.books-page .bk-field-icon{color:var(--text-dim);flex:none;display:flex}.books-page .bk-field input{min-width:0;color:var(--text);font-family:var(--font);background:0 0;border:none;outline:none;flex:1;font-size:1rem}.books-page .bk-field input::placeholder{color:var(--text-dim)}.books-page .bk-btn{background:var(--accent-bright);min-height:50px;color:var(--bg);font-family:var(--font);cursor:pointer;transition:filter .18s var(--ease-out,ease), transform .12s var(--ease-out,ease);-webkit-tap-highlight-color:transparent;border:none;border-radius:12px;flex:none;justify-content:center;align-items:center;padding:.875rem 2.125rem;font-size:.906rem;font-weight:600;display:flex}.books-page .bk-btn:hover{filter:brightness(1.06)}.books-page .bk-btn:active{transform:scale(.985)}.books-page .bk-examples{flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:1rem;display:flex}.books-page .bk-examples-label{color:var(--text-dim);font-size:.78rem}.books-page .bk-code{font-family:var(--font);color:var(--text);background:var(--surface);border:1px solid var(--glass-border);cursor:pointer;transition:border-color .18s var(--ease-out,ease), transform .12s var(--ease-out,ease);-webkit-tap-highlight-color:transparent;border-radius:8px;padding:.5rem .75rem;font-size:.78rem;font-weight:600}.books-page .bk-code:hover{border-color:var(--accent-bright)}.books-page .bk-code:active{transform:scale(.96)}.books-page .bk-sect-head{justify-content:space-between;align-items:flex-end;gap:1.5rem;display:flex}.books-page .bk-sect-title{letter-spacing:-.01em;color:var(--text);font-size:1.1875rem;font-weight:700}.books-page .bk-sect-sub{color:var(--text-dim);margin-top:.3rem;font-size:.8125rem}.books-page .bk-sect-link{font-family:var(--font);color:var(--accent-bright);cursor:pointer;white-space:nowrap;-webkit-tap-highlight-color:transparent;background:0 0;border:none;flex:none;padding:0;font-size:.8125rem;font-weight:600}.books-page .bk-sect-link:hover{filter:brightness(1.12)}.books-page .bk-crumbs{scrollbar-width:none;white-space:nowrap;align-items:center;gap:.3rem;padding-top:2rem;display:flex;overflow-x:auto}.books-page .bk-crumbs::-webkit-scrollbar{display:none}.books-page .bk-crumb-item{align-items:center;gap:.3rem;display:inline-flex}.books-page .bk-crumb-sep{color:var(--text-dim);opacity:.55;font-size:.85rem}.books-page .bk-crumb{color:var(--text-dim);font-family:var(--font);cursor:pointer;text-overflow:ellipsis;white-space:nowrap;background:0 0;border:none;max-width:220px;padding:0;font-size:.8125rem;font-weight:500;transition:color .14s ease-out;overflow:hidden}.books-page .bk-crumb:hover{color:var(--text)}.books-page .bk-crumb.current{color:var(--text);cursor:default;font-weight:600}.books-page .bk-folders{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;margin-top:1.25rem;display:grid}.books-page .bk-folder,.books-page .bk-file{background:var(--surface);border:1px solid var(--glass-border);color:var(--text);text-align:left;font-family:var(--font);transition:border-color .18s var(--ease-out,ease), transform .12s var(--ease-out,ease);-webkit-tap-highlight-color:transparent;border-radius:12px;align-items:center;gap:.875rem;padding:1rem 1.125rem;display:flex}.books-page .bk-folder{cursor:pointer;font-size:.875rem;font-weight:600}.books-page .bk-folder:hover{border-color:var(--accent-bright)}.books-page .bk-folder:active{transform:scale(.99)}.books-page .bk-folder-icon,.books-page .bk-file-icon{background:color-mix(in srgb, var(--accent-bright) 12%, transparent);width:38px;height:38px;color:var(--accent-bright);border-radius:10px;flex:none;justify-content:center;align-items:center;display:flex}.books-page .bk-folder-icon svg,.books-page .bk-file-icon svg{width:19px;height:19px}.books-page .bk-folder-name{overflow-wrap:anywhere;flex:auto;min-width:0;line-height:1.35}.books-page .bk-chevron{color:var(--text-dim);flex-shrink:0;display:flex}.books-page .bk-chevron svg{width:16px;height:16px}.books-page .bk-files{flex-direction:column;gap:.5rem;margin:1.25rem 0 0;padding:0;list-style:none;display:flex}.books-page .bk-file{padding:.8125rem 1.125rem}.books-page .bk-file:hover{border-color:color-mix(in srgb, var(--accent-bright) 45%, transparent)}.books-page .bk-file-icon.k-doc,.books-page .bk-file-icon.k-archive,.books-page .bk-file-icon.k-other{color:var(--text-dim);background:#eef1f60f}.books-page .bk-file-main{flex:auto;min-width:0}.books-page .bk-file-name{color:var(--text);overflow-wrap:anywhere;font-size:.875rem;font-weight:600;line-height:1.35;display:block}.books-page .bk-file-meta{color:var(--text-dim);flex-wrap:wrap;align-items:center;margin-top:.15rem;font-size:.78rem;display:flex}.books-page .bk-file-meta>*+:before{content:"·";opacity:.5;margin:0 .4rem}.books-page .bk-author{text-overflow:ellipsis;white-space:nowrap;max-width:260px;overflow:hidden}.books-page .bk-ext{letter-spacing:.03em;font-weight:700}.books-page .bk-where{text-overflow:ellipsis;white-space:nowrap;max-width:220px;color:var(--accent-bright);overflow:hidden}.books-page .bk-where:before{opacity:.5}.books-page .bk-dl{width:38px;height:38px;color:var(--text-dim);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;transition:transform .12s ease-out,color .14s ease-out,background .14s ease-out,border-color .14s ease-out;display:flex}.books-page .bk-dl svg{width:18px;height:18px}.books-page .bk-dl:hover{color:var(--accent-bright);border-color:var(--accent-bright);background:color-mix(in srgb, var(--accent-bright) 10%, transparent)}.books-page .bk-dl:active{transform:scale(.97)}.books-page .bk-dl.busy{color:var(--accent-bright);cursor:default}.books-page .bk-dl.busy:hover{background:0 0;border-color:#0000}.books-page .bk-spinner{border:2px solid color-mix(in srgb, var(--accent-bright) 25%, transparent);border-top-color:var(--accent-bright);border-radius:50%;width:16px;height:16px;animation:.7s linear infinite bkSpin}@keyframes bkSpin{to{transform:rotate(360deg)}}.books-page .bk-recent{flex-wrap:wrap;gap:.5rem;margin-top:1rem;display:flex}.books-page .bk-recent-item{max-width:100%;font-family:var(--font);color:var(--text);background:var(--surface);border:1px solid var(--glass-border);cursor:pointer;transition:border-color .18s var(--ease-out,ease), transform .12s var(--ease-out,ease);-webkit-tap-highlight-color:transparent;border-radius:10px;align-items:center;gap:.5rem;padding:.5rem .8rem;font-size:.8125rem;font-weight:600;display:flex}.books-page .bk-recent-item:hover{border-color:var(--accent-bright)}.books-page .bk-recent-item:active{transform:scale(.96)}.books-page .bk-recent-icon{color:var(--text-dim);flex:none;display:flex}.books-page .bk-recent-text{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.books-page .bk-body{padding-top:.5rem}.books-page .bk-banner{background:var(--error-bg,#fb71851a);border:1px solid var(--error,#fb7185);color:var(--text);border-radius:12px;margin-top:2rem;padding:.75rem 1rem;font-size:.82rem;line-height:1.5}.books-page .bk-empty{text-align:center;color:var(--text-dim);padding:3rem 1rem;font-size:.85rem}.books-page .bk-skeleton{flex-direction:column;gap:.5rem;margin-top:2rem;display:flex}.books-page .bk-skeleton-row{background:var(--surface);border-radius:12px;height:70px;position:relative;overflow:hidden}.books-page .bk-skeleton-row:after{content:"";background:linear-gradient(90deg,#0000,#eef1f612,#0000);animation:1.8s infinite bkShimmer;position:absolute;inset:0;transform:translate(-100%)}@keyframes bkShimmer{to{transform:translate(100%)}}@media (max-width:860px){.books-page{--bk-nav-h:48px;width:min(1088px,100% - 2rem);padding-bottom:7rem}.books-page .bk-hero{padding-top:2rem}.books-page .bk-hero-title{font-size:1.875rem}.books-page .bk-hero-sub{font-size:.875rem}.books-page .bk-title{font-size:1.5rem}.books-page .bk-search-row{flex-direction:column;max-width:none}.books-page.is-searching .bk-search-row{margin-left:0}.books-page .bk-field,.books-page .bk-btn{border-radius:14px;min-height:52px}.books-page .bk-btn{width:100%;padding:.9375rem;font-size:.9375rem}.books-page .bk-code{padding:.9375rem .8125rem}.books-page .bk-recent-item{padding:.8125rem .8rem}.books-page .bk-folders{grid-template-columns:1fr}.books-page .bk-sect{margin-top:2.5rem}.books-page .bk-crumb{max-width:150px}.books-page .bk-dl{width:44px;height:44px}.books-page .bk-author{max-width:150px}.books-page .bk-where{max-width:130px}}.books-page{--v2-surface:color-mix(in srgb, var(--text) 4.5%, transparent);--v2-surface-2:color-mix(in srgb, var(--text) 7%, transparent);--v2-surface-3:color-mix(in srgb, var(--text) 11%, transparent);--v2-hair:color-mix(in srgb, var(--text) 6%, transparent);--v2-dim-2:color-mix(in srgb, var(--text-dim) 72%, var(--bg))}body:has(.books-page) .bg-blobs{display:none}.books-page{width:min(1120px,100% - 48px)}.books-page .bk-hero{text-align:center;flex-direction:column;align-items:center;padding-top:clamp(48px,9vh,96px);display:flex}.books-page .bk-hero-title{letter-spacing:-.035em;text-wrap:balance;font-size:clamp(40px,5vw,68px);font-weight:600;line-height:1.04}.books-page .bk-hero-sub{max-width:560px;color:var(--text-dim);text-wrap:pretty;margin-top:22px;font-size:clamp(16px,1.5vw,19px);line-height:1.5}.books-page .bk-search{margin-top:40px}.books-page .bk-search-row{--bk-row-w:720px;max-width:var(--bk-row-w);gap:10px;margin-inline:auto;display:flex}.books-page .bk-field{flex:1;min-width:0}.books-page.is-searching .bk-search-row{margin-left:auto}.books-page .bk-field{background:var(--v2-surface-2);border:none;border-radius:20px;gap:12px;min-height:64px;padding:7px 7px 7px 22px;box-shadow:inset 0 1px #ffffff0a,0 24px 60px -30px #000000e6}.books-page .bk-field:focus-within{background:var(--v2-surface-3);box-shadow:0 1px 0 #ffffff0d inset, 0 0 0 4px color-mix(in srgb, var(--accent-bright) 18%, transparent);border:none}.books-page .bk-field input{font-size:18px}.books-page .bk-btn{border-radius:14px;height:50px;min-height:50px;padding:0 24px;font-size:16px}.books-page .bk-examples{color:var(--v2-dim-2);justify-content:center;gap:8px;margin-top:16px;font-size:14px}.books-page .bk-code{color:var(--accent-bright);background:0 0;border:none;padding:2px 0;font-size:14px;font-weight:500}.books-page .bk-code:hover{text-underline-offset:3px;border:none;text-decoration:underline}.books-page .bk-recent{justify-content:center}.books-page .bk-recent-item{background:var(--v2-surface);border:none;border-radius:999px}.books-page .bk-sect{margin-top:clamp(64px,9vw,120px)}.books-page .bk-sect-title{letter-spacing:-.025em;font-size:clamp(26px,2.8vw,36px);font-weight:600}.books-page .bk-sect-sub{color:var(--text-dim);font-size:16px}.books-page .bk-sect-link{color:var(--accent-bright);font-weight:500}.books-page .bk-folders{gap:14px}.books-page .bk-folder{background:var(--v2-surface);min-height:84px;box-shadow:none;transition:background var(--dur-base) var(--ease-out), translate var(--dur-slow) var(--ease-spring), scale var(--dur-slow) var(--ease-bounce);border:none;border-radius:20px;padding:20px 22px}.books-page .bk-folder:hover{background:var(--v2-surface-2);border:none;transform:none}.books-page .bk-folder-icon{background:color-mix(in srgb, var(--accent-bright) 12%, transparent);width:36px;height:36px;color:var(--accent-bright);border:none;border-radius:10px}.books-page .bk-folder-name{font-size:16px;font-weight:600}.books-page .bk-crumbs{background:0 0;border:none;padding:0;font-size:15px}.books-page .bk-files{background:var(--v2-surface);border-radius:24px;gap:0;padding:8px}.books-page .bk-file{box-shadow:none;transition:background var(--dur-base) var(--ease-out);background:0 0;border:none;border-radius:14px;padding:14px;position:relative}.books-page .bk-file+.bk-file:before{content:"";background:var(--v2-hair);height:1px;position:absolute;top:0;left:14px;right:14px}.books-page .bk-file:hover{background:var(--v2-surface-2);border:none;transform:none}.books-page .bk-file:hover+.bk-file:before{opacity:0}.books-page .bk-file-name{font-size:15px;font-weight:500}.books-page .bk-file-meta{color:var(--text-dim);font-size:13px}.books-page .bk-ext{background:var(--v2-surface-2);border:none;border-radius:8px;font-size:11px;font-weight:700}.books-page .bk-banner{background:color-mix(in srgb, var(--accent-bright) 8%, transparent);border:none;border-radius:16px}.books-page .bk-empty{background:var(--v2-surface);color:var(--text-dim);border:none;border-radius:20px;padding:44px 20px}.books-page .bk-skeleton-row{background:var(--v2-surface);border-radius:14px}@media (max-width:768px){.books-page{width:calc(100% - 32px)}.books-page .bk-hero{padding-top:36px}.books-page .bk-search-row{flex-direction:row;max-width:none}.books-page .bk-field{border-radius:16px;min-height:56px;padding:6px 6px 6px 16px}.books-page .bk-field input{font-size:16px}.books-page .bk-btn{border-radius:12px;width:auto;height:44px;min-height:44px;padding:0 18px;font-size:15px}.books-page .bk-folders{gap:10px}.books-page .bk-folder{border-radius:16px;min-height:72px;padding:16px 18px}}