:root{--xb-bg: #f7f5f2;--xb-surface: #ffffff;--xb-ink: #1a1a1a;--xb-muted: #9a8f80;--xb-muted-strong: #6f665b;--xb-line: #e4e0da;--xb-accent: #b8864b;--xb-accent-soft: #efe6d6;--xb-danger: #a8433a;--xb-wrap: #e9e2d6;--xb-wrap-stripe: #ddd5c6;--xb-night: #151311;--xb-night-raised: #2a2826;--xb-font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;--xb-font-serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", "Noto Serif CJK SC", serif;--xb-radius: 2px;--xb-scrim: rgba(26, 26, 26, .42);--xb-caption-shadow: 0 .06em .3em rgba(0, 0, 0, .55);--xb-shadow-card: 0 12px 32px rgb(0 0 0 / 8%);--xb-ease: cubic-bezier(.45,0,.3,1);--xb-duration: .18s;--ink: var(--xb-ink);--muted: var(--xb-muted-strong);--accent: var(--xb-ink);--accent-hover: #000;--paper: var(--xb-surface);--line: var(--xb-line);--ui-ink: var(--xb-ink);--ui-primary: var(--xb-ink);--ui-canvas: var(--xb-bg);--ui-surface: var(--xb-surface);--ui-line: var(--xb-line);--ui-accent: var(--xb-accent);--ui-highlight: var(--xb-accent-soft);--ui-font: var(--xb-font-sans);color-scheme:light;font-family:var(--xb-font-sans);color:var(--xb-ink);background:var(--xb-bg)}html:has(>body.site-page){scroll-behavior:smooth}.site-page img{max-width:100%}.site-page .masthead :focus-visible{outline-color:var(--xb-accent)}.xb-mascot{display:block;width:100%;height:auto}.xb-mascot-eye{animation:xb-blink 4s infinite;transform-box:fill-box;transform-origin:center}@keyframes xb-blink{0%,94%,to{transform:scaleY(1)}97%{transform:scaleY(.1)}}.site-page ::selection{background:var(--xb-accent-soft)}@media(prefers-reduced-motion:reduce){html:has(>body.site-page){scroll-behavior:auto}}.site-page{margin:0;min-width:320px;background:var(--xb-bg);color:var(--ink);font-family:var(--xb-font-sans);-webkit-font-smoothing:antialiased;line-height:1.6}.site-page *,.site-page *:before,.site-page *:after{box-sizing:border-box}.site-page button,.site-page input,.site-page textarea,.site-page select{font:inherit}.site-page button,.site-page a{-webkit-tap-highlight-color:transparent}.site-page button{cursor:pointer}.site-page a{color:inherit;text-decoration:none}.site-page button:disabled{cursor:wait;opacity:.65}.site-page :focus-visible{outline:2px solid var(--xb-ink);outline-offset:4px}.site-page [hidden]{display:none!important}.site-page :where(h1,h2,h3,p){margin-top:0}.site-page h1,.site-page h2,.site-page h3{text-wrap:balance}.site-container{box-sizing:border-box;width:100%;max-width:1200px;margin-inline:auto;padding:0 24px}.site-icon{width:22px;height:22px;flex:0 0 auto;vertical-align:middle}.site-header{background:var(--xb-bg)}.site-nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.site-brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-family:var(--xb-font-serif);font-size:18px;font-weight:600;letter-spacing:.1em;line-height:1.4}.site-brand-mark{display:flex;align-items:center;justify-content:center;flex:0 0 auto;width:34px}.site-links{display:flex;align-items:center;gap:32px;font-size:13px;color:var(--muted)}.site-links a{padding-block:13px;white-space:nowrap}.site-links a:hover{color:var(--accent)}.site-page .button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 18px;border:1px solid transparent;border-radius:var(--xb-radius);font-size:14px;font-weight:600;line-height:1.4;transition:background .18s,border-color .18s,box-shadow .18s}.site-page .button-primary{color:#fff;background:var(--accent)}.site-page .button-primary:hover{background:var(--accent-hover)}.site-page .button-secondary{background:var(--xb-surface);color:var(--ink);border-color:var(--xb-line)}.site-page .button-secondary:hover{background:var(--xb-surface);border-color:var(--xb-ink)}.site-page .skip-link{position:absolute;z-index:100;top:-100px;left:20px;padding:10px 20px;border-radius:var(--xb-radius);color:#fff;background:var(--ink)}.site-page .skip-link:focus{top:10px}.site-page .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;padding:0;margin:-1px;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:640px){.site-container{padding:0 16px}.site-nav{min-height:56px;flex-wrap:nowrap;gap:12px}.site-brand{font-size:16px;gap:8px}.site-brand-mark{width:30px}.site-links{gap:18px;font-size:12px}.site-links>a{display:none}}@media(max-width:360px){.site-brand{font-size:15px}.site-links{gap:12px;font-size:11px}}@media(prefers-reduced-motion:reduce){.site-page *,.site-page *:before,.site-page *:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.xb-toast{position:fixed;z-index:2000;top:max(12px,env(safe-area-inset-top));left:12px;right:12px;margin-left:auto;max-width:420px;display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--xb-radius, 8px);background:var(--xb-ink, #1a1a1a);color:var(--xb-surface, #fff);box-shadow:0 8px 24px #00000040;animation:xb-toast-in .24s ease-out}.xb-toast-mark{flex:0 0 auto}.xb-toast>div{flex:1 1 auto;min-width:0}.xb-toast strong{display:block;font-size:14px}.xb-toast p{margin:2px 0 0;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;opacity:.85}.xb-toast-open{flex:0 0 auto;display:inline-flex;align-items:center;min-height:44px;min-width:44px;padding:0 10px;border:1px solid currentColor;border-radius:var(--xb-radius, 8px);background:transparent;color:inherit;font:inherit;font-size:13px;text-decoration:none;cursor:pointer}.xb-toast-close{flex:0 0 auto;min-width:44px;min-height:44px;padding:0;border:0;background:transparent;color:inherit;font-size:20px;cursor:pointer}.xb-toast-open:focus-visible,.xb-toast-close:focus-visible{outline:2px solid currentColor;outline-offset:2px}@keyframes xb-toast-in{0%{transform:translateY(-120%);opacity:0}to{transform:none;opacity:1}}@media(prefers-reduced-motion:reduce){.xb-toast{animation:none}}.site-switch{position:relative;flex-shrink:0}.site-page .site-switch-trigger{display:flex;align-items:center;gap:11px;margin:-6px -8px;padding:6px 8px;border:1px solid transparent;border-radius:var(--xb-radius);background:transparent;color:var(--xb-ink)}.site-switch-trigger .switch-chevron{width:16px;height:16px;margin-left:-4px;color:var(--xb-muted-strong);transition:transform .18s}.site-switch-trigger:hover,.site-switch-trigger[aria-expanded=true]{border-color:var(--xb-line);background:var(--xb-surface)}.site-switch-trigger[aria-expanded=true] .switch-chevron{transform:rotate(180deg);color:var(--xb-ink)}.site-switch-menu{position:absolute;top:calc(100% + 12px);left:-8px;z-index:30;width:min(300px,calc(100vw - 32px));padding:8px;border:1px solid var(--xb-line);border-radius:var(--xb-radius);background:var(--xb-surface);box-shadow:var(--xb-shadow-card);font-family:var(--xb-font-sans);letter-spacing:0}.site-switch-item{display:grid;grid-template-columns:30px minmax(0,1fr) auto;align-items:center;gap:12px;min-height:60px;padding:9px 10px;border-radius:var(--xb-radius)}.site-switch-item:hover{background:var(--xb-bg)}.site-switch-item .xb-mascot{width:30px}.site-switch-name{display:block;font-family:var(--xb-font-serif);font-size:16px;font-weight:600;letter-spacing:.08em;line-height:1.35}.site-switch-tag{display:block;color:var(--xb-muted-strong);font-size:13px;line-height:1.4}.site-switch-item[aria-current=page]{background:var(--xb-accent-soft)}.site-switch-check{width:18px;height:18px}.site-switch-busy{font-size:12px;color:var(--xb-muted-strong);white-space:nowrap}.site-switch-note{margin:6px 4px 2px;padding:8px 6px 2px;border-top:1px solid var(--xb-line);color:var(--xb-muted-strong);font-size:12px}@media(max-width:640px){.site-switch-menu{width:calc(100vw - 32px)}.site-page .site-switch-trigger{gap:8px}}
