:root{--gr-book-nav-height:78px}
html{scroll-padding-top:calc(var(--gr-book-nav-height) + 80px)}
.gr-book-nav{position:sticky;top:0;z-index:30;height:var(--gr-book-nav-height);box-sizing:border-box;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:30px;align-items:center;padding:12px 28px;background:#153b2d;color:#fff;border-bottom:1px solid #42654d;font:13px/1.4 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
.gr-book-nav *{box-sizing:border-box}
.gr-book-nav a{color:inherit;text-decoration:none}
.gr-book-home{display:flex;align-items:center;gap:10px;white-space:nowrap}
.gr-book-home img{width:30px;height:30px;object-fit:contain}
.gr-book-home strong{display:block;font-size:15px;font-weight:550;letter-spacing:-.02em}
.gr-book-home small{display:block;color:#d0e1c3;font-size:10px;margin-top:1px}
.gr-book-switch{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;max-width:750px;width:100%;margin:auto}
.gr-book-direction{display:flex;align-items:center;justify-content:center;gap:9px;min-height:42px;padding:9px 12px;border:1px solid #6b8958;border-radius:6px;white-space:nowrap;font-size:11px}
.gr-book-direction[aria-disabled=true]{opacity:.4}
.gr-book-nav a:hover{color:#d5ef95}
.gr-book-direction:not([aria-disabled=true]):hover{border-color:#d5ef95}
.gr-book-choose{display:block;min-width:0}
.gr-book-choose select{font:13px/1.4 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;width:100%;min-width:0;max-width:none;height:42px;border:1px solid #76915f;border-radius:6px;padding:8px 24px 8px 12px;background:#234936;color:#fff;cursor:pointer;text-overflow:ellipsis;white-space:nowrap}
.gr-book-choose option{color:#173b2e;background:#fff}
.gr-book-library{font-size:12px;white-space:nowrap;border-bottom:1px solid #a8bf9470;padding:7px 0}
.gr-book-nav a:focus-visible,.gr-book-nav select:focus-visible{outline:3px solid #d5ef95;outline-offset:3px}
.gr-reader-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;margin:-1px}
.reader-tools{top:var(--gr-book-nav-height)}
.vp-doc h1,.vp-doc h2,.vp-doc h3{scroll-margin-top:0}
.reader-toc{top:calc(var(--gr-book-nav-height) + 90px)}
@media(max-width:1050px){.gr-book-nav{gap:18px;padding-inline:22px}.gr-book-home strong{font-size:14px}.gr-book-direction .gr-direction-text{display:none}.gr-book-direction{min-width:40px;padding-inline:10px}}
@media(max-width:700px){:root{--gr-book-nav-height:121px}.gr-book-nav{grid-template-columns:1fr auto;gap:10px 15px;padding:11px 18px;align-content:start}.gr-book-home{grid-column:1;grid-row:1;gap:9px}.gr-book-home img{width:25px;height:25px}.gr-book-home strong{font-size:14px}.gr-book-home small{font-size:9px}.gr-book-library{grid-column:2;grid-row:1;font-size:11px}.gr-book-switch{grid-column:1/-1;grid-row:2;gap:8px;max-width:none}.gr-book-choose select{font-size:12px;padding-left:10px}.gr-book-direction{min-height:42px;min-width:39px}.reader-tools{flex-wrap:wrap;gap:8px;padding:10px 18px}.reader-tools strong{flex-basis:100%;max-width:none;font-size:11px}.reader-toc{top:calc(var(--gr-book-nav-height) + 105px)}html{scroll-padding-top:calc(var(--gr-book-nav-height) + 96px)}}
@media print{.gr-book-nav{display:none!important}.reader-tools,.reader-toc{top:auto}html{scroll-padding-top:0}}