:root{--color-primary: #1E3A5F;--color-primary-ink: #142840;--color-accent: #B85C5C;--color-bg: #F5EFE2;--color-surface: #FBF6EA;--color-surface-warm: #ECE4CF;--color-ink: #1A1C20;--color-ink-soft: #4A4D54;--color-muted: #86857C;--color-rule: #DBD3BC;--color-highlight: #E5DCBE;--font-serif: "Noto Serif TC", "Source Han Serif TC", "PingFang TC", "Songti TC", serif;--font-sans: "Noto Sans TC", "Source Han Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;--font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--leading: 1.85;--measure: 30em}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--color-bg);color:var(--color-ink);font-family:var(--font-sans);font-size:17px;line-height:var(--leading);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}a{color:inherit}button{font:inherit}.shell{max-width:460px;margin:0 auto;background:var(--color-bg);min-height:100vh;position:relative;padding-bottom:70px}.eyebrow{font-family:var(--font-mono);font-size:11px;color:var(--color-muted);letter-spacing:1.4px;text-transform:none}.prose{font-family:var(--font-sans);font-size:17px;line-height:1.85;color:var(--color-ink);white-space:pre-wrap;letter-spacing:.1px;max-width:var(--measure)}.title-serif{font-family:var(--font-serif);font-weight:600;color:var(--color-ink);letter-spacing:.5px}.scroll-x::-webkit-scrollbar{width:0;height:0}.scroll-x{scrollbar-width:none;-webkit-overflow-scrolling:touch}.fb-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--color-primary);color:#fff;font-family:var(--font-sans);font-weight:600;text-decoration:none;border:none;cursor:pointer}.fb-btn:hover{background:var(--color-primary-ink)}.fb-btn--pill{font-size:13px;padding:8px 12px;border-radius:999px}.fb-btn--block{font-size:16px;padding:16px 20px;border-radius:10px;width:100%;box-shadow:0 1px #0000000a}.fb-btn--inline{font-size:15px;padding:13px 22px;border-radius:10px}.topbar[data-astro-cid-lq7i5isa]{position:sticky;top:0;z-index:20;background:#faf6eef0;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--color-rule);padding:12px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand[data-astro-cid-lq7i5isa]{display:flex;align-items:center;gap:8px;text-decoration:none;color:inherit}.brand-mark[data-astro-cid-lq7i5isa]{width:28px;height:28px;border-radius:6px;background:var(--color-primary);color:#fff;display:grid;place-items:center;font-family:var(--font-serif);font-weight:700;font-size:15px}.brand-text[data-astro-cid-lq7i5isa]{display:flex;flex-direction:column;line-height:1}.brand-name[data-astro-cid-lq7i5isa]{font-family:var(--font-serif);font-size:15px;font-weight:600;color:var(--color-ink)}.brand-sub[data-astro-cid-lq7i5isa]{font-family:var(--font-mono);font-size:9.5px;color:var(--color-muted);letter-spacing:.5px;margin-top:2px}.topbar-actions[data-astro-cid-lq7i5isa]{display:flex;align-items:center;gap:10px}.lang-switch[data-astro-cid-lq7i5isa]{display:inline-flex;align-items:center;gap:3px;font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;text-decoration:none;padding:4px 6px;border-radius:4px;transition:background .15s ease}.lang-switch[data-astro-cid-lq7i5isa]:hover{background:#0000000a}.lang-switch[data-astro-cid-lq7i5isa] .lang-current[data-astro-cid-lq7i5isa]{color:var(--color-ink);font-weight:500}.lang-switch[data-astro-cid-lq7i5isa] .lang-other[data-astro-cid-lq7i5isa]{color:var(--color-muted)}.lang-switch[data-astro-cid-lq7i5isa] .lang-divider[data-astro-cid-lq7i5isa]{color:var(--color-rule)}.bottom-nav[data-astro-cid-ltxpr5xc]{position:fixed;bottom:0;left:0;right:0;max-width:460px;margin:0 auto;background:#fffffff5;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-top:1px solid var(--color-rule);display:flex;justify-content:space-around;padding:8px 0 max(6px,env(safe-area-inset-bottom));z-index:15}.item[data-astro-cid-ltxpr5xc]{background:none;border:none;padding:4px 10px;display:flex;flex-direction:column;align-items:center;gap:3px;text-decoration:none;color:var(--color-muted)}.item[data-astro-cid-ltxpr5xc] span[data-astro-cid-ltxpr5xc]{font-size:10.5px;font-family:var(--font-sans)}.item[data-astro-cid-ltxpr5xc].active{color:var(--color-primary)}.item[data-astro-cid-ltxpr5xc].active span[data-astro-cid-ltxpr5xc]{font-weight:600}