:root{--radius: 9px;--radius-sm: 6px;--fs-xs: .78rem;--fs-sm: .875rem;--fs-base: 1.02rem;--fs-lg: 1.2rem;--fs-xl: 1.55rem;--fs-2xl: 2.1rem;--sp-1: .25rem;--sp-2: .5rem;--sp-3: .75rem;--sp-4: 1rem;--sp-6: 1.5rem;--sp-8: 2rem;--sp-12: 3rem;--font-sans: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;--font-serif: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;--font-mono: "JetBrains Mono", "SF Mono", ui-monospace, monospace;--measure: 38rem;--transition: .16s cubic-bezier(.4, 0, .2, 1)}:root,:root[data-theme=night]{--c-bg: oklch(26% .03 64);--c-bg-raised: oklch(30% .034 62);--c-bg-sunken: oklch(23% .026 64);--c-line: oklch(41% .038 60);--c-line-soft: oklch(35% .032 62);--c-ink: oklch(93% .028 82);--c-ink-soft: oklch(79% .03 80);--c-ink-faint: oklch(64% .032 76);--c-en: oklch(77% .032 78);--c-zh: oklch(94% .026 84);--c-accent: oklch(80% .13 65);--c-accent-dim: oklch(68% .11 62);--c-pending: oklch(74% .1 50);--c-ok: oklch(76% .12 135);--c-danger: oklch(70% .16 32);--shadow: 0 1px 2px oklch(0% 0 0 / .32), 0 6px 22px oklch(0% 0 0 / .26);color-scheme:dark}:root[data-theme=day]{--c-bg: oklch(97.5% .011 82);--c-bg-raised: oklch(99.5% .006 84);--c-bg-sunken: oklch(95% .013 80);--c-line: oklch(87% .018 76);--c-line-soft: oklch(91% .013 78);--c-ink: oklch(29% .02 64);--c-ink-soft: oklch(46% .02 66);--c-ink-faint: oklch(60% .02 68);--c-en: oklch(48% .02 66);--c-zh: oklch(27% .02 64);--c-accent: oklch(56% .14 58);--c-accent-dim: oklch(64% .12 60);--c-pending: oklch(58% .13 52);--c-ok: oklch(54% .13 138);--c-danger: oklch(54% .18 30);--shadow: 0 1px 2px oklch(40% .02 70 / .08), 0 6px 22px oklch(40% .02 70 / .1);color-scheme:light}@media (prefers-color-scheme: light){:root:not([data-theme]){--c-bg: oklch(97.5% .011 82);--c-bg-raised: oklch(99.5% .006 84);--c-bg-sunken: oklch(95% .013 80);--c-line: oklch(87% .018 76);--c-line-soft: oklch(91% .013 78);--c-ink: oklch(29% .02 64);--c-ink-soft: oklch(46% .02 66);--c-ink-faint: oklch(60% .02 68);--c-en: oklch(48% .02 66);--c-zh: oklch(27% .02 64);--c-accent: oklch(56% .14 58);--c-accent-dim: oklch(64% .12 60);--c-pending: oklch(58% .13 52);--c-ok: oklch(54% .13 138);--shadow: 0 1px 2px oklch(40% .02 70 / .08), 0 6px 22px oklch(40% .02 70 / .1);color-scheme:light}}*{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);font-size:var(--fs-base);line-height:1.68;color:var(--c-ink);background:var(--c-bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;transition:background var(--transition),color var(--transition)}a{color:var(--c-accent);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:2px}:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:3px}button{font:inherit;cursor:pointer;border:1px solid var(--c-line);background:var(--c-bg-raised);color:var(--c-ink);border-radius:var(--radius-sm);padding:var(--sp-2) var(--sp-3);transition:border-color var(--transition),background var(--transition),color var(--transition)}button:hover:not(:disabled){border-color:var(--c-accent-dim)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--c-accent);border-color:var(--c-accent);color:#201308;font-weight:560}button.primary:hover:not(:disabled){background:var(--c-accent-dim)}::selection{background:#f7ab5d4d}body:after{content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:.05;mix-blend-mode:overlay;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23grain)'/%3E%3C/svg%3E");background-size:160px 160px}:root[data-theme=day] body:after{opacity:.035;mix-blend-mode:multiply}@media (prefers-color-scheme: light){:root:not([data-theme]) body:after{opacity:.035;mix-blend-mode:multiply}}html,body{height:100%}.app[data-astro-cid-j7pv25f6]{display:flex;flex-direction:column;min-height:100vh}.topbar[data-astro-cid-j7pv25f6]{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);padding:var(--sp-3) var(--sp-6);border-bottom:1px solid var(--c-line);background:var(--c-bg-raised);position:sticky;top:0;z-index:10;flex-wrap:wrap}.brand[data-astro-cid-j7pv25f6]{display:flex;align-items:baseline;gap:var(--sp-3)}.mark[data-astro-cid-j7pv25f6]{font-weight:600;letter-spacing:.08em;color:var(--c-accent);border:1px solid var(--c-accent-dim);border-radius:var(--radius-sm);padding:2px 6px;font-size:var(--fs-sm)}.wordmark[data-astro-cid-j7pv25f6]{font-weight:560;font-size:var(--fs-lg);letter-spacing:.02em}.tagline[data-astro-cid-j7pv25f6]{color:var(--c-ink-faint);font-size:var(--fs-sm)}.topbar-right[data-astro-cid-j7pv25f6]{display:flex;align-items:center;gap:var(--sp-3);flex:1 1 22rem;justify-content:flex-end}.import[data-astro-cid-j7pv25f6]{display:flex;gap:var(--sp-2);flex:0 1 26rem}.import[data-astro-cid-j7pv25f6] input[data-astro-cid-j7pv25f6]{flex:1;font:inherit;font-size:var(--fs-sm);color:var(--c-ink);background:var(--c-bg-sunken);border:1px solid var(--c-line);border-radius:var(--radius-sm);padding:var(--sp-2) var(--sp-3)}.import[data-astro-cid-j7pv25f6] input[data-astro-cid-j7pv25f6]::placeholder{color:var(--c-ink-faint)}.icon-btn[data-astro-cid-j7pv25f6]{white-space:nowrap;font-size:var(--fs-sm)}.status-line[data-astro-cid-j7pv25f6]{min-height:1.6rem;padding:var(--sp-1) var(--sp-6);font-size:var(--fs-sm);border-bottom:1px solid var(--c-line-soft)}#status[data-astro-cid-j7pv25f6][data-kind=error]{color:var(--c-danger)}#status[data-astro-cid-j7pv25f6][data-kind=ok]{color:var(--c-ok)}#status[data-astro-cid-j7pv25f6][data-kind=info]{color:var(--c-ink-soft)}.workbench[data-astro-cid-j7pv25f6]{display:grid;grid-template-columns:16rem 1fr;flex:1;min-height:0}.sidebar[data-astro-cid-j7pv25f6]{border-right:1px solid var(--c-line);padding:var(--sp-6) var(--sp-4);overflow-y:auto;position:sticky;top:3.6rem;align-self:start;max-height:calc(100vh - 3.6rem)}.paper-meta[data-astro-cid-j7pv25f6] h1[data-astro-cid-j7pv25f6]{font-size:var(--fs-base);font-weight:560;line-height:1.4;color:var(--c-ink);margin-bottom:var(--sp-4)}.toc-list[data-astro-cid-j7pv25f6]{list-style:none;display:flex;flex-direction:column;gap:1px}.toc-item[data-astro-cid-j7pv25f6] a[data-astro-cid-j7pv25f6]{display:block;color:var(--c-ink-soft);font-size:var(--fs-sm);padding:var(--sp-1) var(--sp-2);border-radius:4px}.toc-item[data-astro-cid-j7pv25f6] a[data-astro-cid-j7pv25f6]:hover{color:var(--c-ink);background:var(--c-bg-sunken);text-decoration:none}.toc-l1[data-astro-cid-j7pv25f6] a[data-astro-cid-j7pv25f6]{padding-left:var(--sp-4);font-size:var(--fs-xs);color:var(--c-ink-faint)}.toc-l2[data-astro-cid-j7pv25f6] a[data-astro-cid-j7pv25f6]{padding-left:var(--sp-6)}.reader[data-astro-cid-j7pv25f6]{overflow-y:auto}.reader-toolbar[data-astro-cid-j7pv25f6]{display:flex;align-items:center;gap:var(--sp-4);padding:var(--sp-3) var(--sp-8);border-bottom:1px solid var(--c-line-soft);position:sticky;top:0;background:var(--c-bg);z-index:5;flex-wrap:wrap}.progress[data-astro-cid-j7pv25f6]{font-size:var(--fs-sm);color:var(--c-ink-soft)}.progress[data-astro-cid-j7pv25f6][data-done="1"]{color:var(--c-ok)}.seg[data-astro-cid-j7pv25f6]{margin-left:auto;display:inline-flex;border:1px solid var(--c-line);border-radius:var(--radius-sm);overflow:hidden}.seg[data-astro-cid-j7pv25f6] button[data-astro-cid-j7pv25f6]{border:0;border-radius:0;background:transparent;color:var(--c-ink-soft);padding:var(--sp-1) var(--sp-3);font-size:var(--fs-sm)}.seg[data-astro-cid-j7pv25f6] button[data-astro-cid-j7pv25f6]+button[data-astro-cid-j7pv25f6]{border-left:1px solid var(--c-line)}.seg[data-astro-cid-j7pv25f6] button[data-astro-cid-j7pv25f6][aria-pressed=true]{background:var(--c-accent);color:#201308;font-weight:540}.stream[data-astro-cid-j7pv25f6]{max-width:78rem;margin:0 auto;padding:var(--sp-8)}.empty-hint[data-astro-cid-j7pv25f6]{color:var(--c-ink-faint);font-size:var(--fs-sm);padding:var(--sp-8) 0;max-width:var(--measure)}.blk-row[data-astro-cid-j7pv25f6]{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-8);padding:var(--sp-3) 0;border-bottom:1px solid var(--c-line-soft);scroll-margin-top:4rem}.col[data-astro-cid-j7pv25f6]{max-width:var(--measure);position:relative}.col-en[data-astro-cid-j7pv25f6]{color:var(--c-en);font-family:var(--font-serif)}.col-zh[data-astro-cid-j7pv25f6]{color:var(--c-zh)}.zh-placeholder[data-astro-cid-j7pv25f6]{color:var(--c-pending);font-size:var(--fs-sm);font-style:italic}.blk-translate-one[data-astro-cid-j7pv25f6]{margin-left:var(--sp-3);font-size:var(--fs-xs);padding:1px var(--sp-2);color:var(--c-accent);border-color:var(--c-accent-dim);background:transparent;vertical-align:baseline}.stream[data-astro-cid-j7pv25f6][data-view=zh] .blk-row[data-astro-cid-j7pv25f6]{grid-template-columns:1fr}.stream[data-astro-cid-j7pv25f6][data-view=zh] .col-en[data-astro-cid-j7pv25f6]{display:none}.stream[data-astro-cid-j7pv25f6][data-view=en] .blk-row[data-astro-cid-j7pv25f6]{grid-template-columns:1fr}.stream[data-astro-cid-j7pv25f6][data-view=en] .col-zh[data-astro-cid-j7pv25f6],.stream[data-astro-cid-j7pv25f6][data-view=zh] .blk-heading[data-astro-cid-j7pv25f6] .h-en[data-astro-cid-j7pv25f6],.stream[data-astro-cid-j7pv25f6][data-view=en] .blk-heading[data-astro-cid-j7pv25f6] .h-zh[data-astro-cid-j7pv25f6]{display:none}.blk-heading[data-astro-cid-j7pv25f6]{grid-column:1 / -1;margin:var(--sp-8) 0 var(--sp-2);scroll-margin-top:4rem;display:flex;flex-direction:column;gap:2px}.blk-heading[data-astro-cid-j7pv25f6] .h-en[data-astro-cid-j7pv25f6]{font-weight:600;color:var(--c-ink)}.blk-heading[data-astro-cid-j7pv25f6] .h-zh[data-astro-cid-j7pv25f6]{font-size:.85em;color:var(--c-ink-soft);font-weight:500}h2[data-astro-cid-j7pv25f6].blk-heading .h-en[data-astro-cid-j7pv25f6]{font-size:var(--fs-xl)}h3[data-astro-cid-j7pv25f6].blk-heading .h-en[data-astro-cid-j7pv25f6]{font-size:var(--fs-lg)}h4[data-astro-cid-j7pv25f6].blk-heading .h-en[data-astro-cid-j7pv25f6]{font-size:var(--fs-base)}.blk-row--math[data-astro-cid-j7pv25f6]{grid-template-columns:1fr;justify-items:center}.blk-math[data-astro-cid-j7pv25f6]{overflow-x:auto;max-width:100%;padding:var(--sp-3) 0}.blk-fig[data-astro-cid-j7pv25f6]{margin:var(--sp-6) 0;text-align:center;padding-bottom:var(--sp-4);border-bottom:1px solid var(--c-line-soft)}.blk-fig[data-astro-cid-j7pv25f6] img[data-astro-cid-j7pv25f6]{max-width:100%;height:auto;border-radius:var(--radius-sm);background:#fdfcf8;padding:var(--sp-2)}.blk-fig[data-astro-cid-j7pv25f6] figcaption[data-astro-cid-j7pv25f6]{margin-top:var(--sp-2);font-size:var(--fs-sm);color:var(--c-ink-faint)}@media (max-width: 1100px){.workbench[data-astro-cid-j7pv25f6]{grid-template-columns:13rem 1fr}.stream[data-astro-cid-j7pv25f6]{padding:var(--sp-6)}}@media (max-width: 820px){.workbench[data-astro-cid-j7pv25f6]{grid-template-columns:1fr}.sidebar[data-astro-cid-j7pv25f6]{display:none}.topbar[data-astro-cid-j7pv25f6]{padding:var(--sp-3) var(--sp-4)}.topbar-right[data-astro-cid-j7pv25f6]{flex:1 1 100%;justify-content:space-between}.import[data-astro-cid-j7pv25f6]{flex:1}.stream[data-astro-cid-j7pv25f6][data-view=both] .blk-row[data-astro-cid-j7pv25f6]{grid-template-columns:1fr;gap:var(--sp-2)}.stream[data-astro-cid-j7pv25f6][data-view=both] .col-en[data-astro-cid-j7pv25f6]{padding-bottom:var(--sp-2);border-bottom:1px dashed var(--c-line-soft)}.reader-toolbar[data-astro-cid-j7pv25f6]{padding:var(--sp-3) var(--sp-4)}.stream[data-astro-cid-j7pv25f6]{padding:var(--sp-4)}}@media (max-width: 420px){.topbar[data-astro-cid-j7pv25f6]{padding:var(--sp-2) var(--sp-3)}.brand[data-astro-cid-j7pv25f6]{gap:var(--sp-2);flex:1 1 100%}.tagline[data-astro-cid-j7pv25f6]{display:none}.topbar-right[data-astro-cid-j7pv25f6]{gap:var(--sp-2);flex-wrap:wrap}.import[data-astro-cid-j7pv25f6]{flex:1 1 100%}.stream[data-astro-cid-j7pv25f6]{padding:var(--sp-3);overflow-x:hidden}.blk-math[data-astro-cid-j7pv25f6]{max-width:calc(100vw - 1.5rem)}.reader-toolbar[data-astro-cid-j7pv25f6]{gap:var(--sp-2)}.seg[data-astro-cid-j7pv25f6] button[data-astro-cid-j7pv25f6]{padding:var(--sp-1) var(--sp-2)}}