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1.875rem;--fs-h1: 2.25rem;--fs-hero: 2.75rem;--lh-body: 1.7;--lh-heading: 1.25;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;--space-9: 96px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-card: 0 1px 3px rgba(16,24,40,.06), 0 1px 2px rgba(16,24,40,.04);--shadow-card-hover: 0 4px 12px rgba(16,24,40,.1);--border-width: 1px;--content-max: 700px;--layout-max: 1080px;--gutter: clamp(16px, 5vw, 32px)}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;overflow-x:hidden;background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans-en);font-size:var(--fs-base);line-height:var(--lh-body);-webkit-text-size-adjust:100%;text-rendering:optimizeLegibility}html[lang=en],html[lang=en-US]{font-family:var(--font-sans-en)}html[lang=zh],html[lang=zh-CN]{font-family:var(--font-sans-zh)}body{display:flex;flex-direction:column;min-height:100vh}main{flex:1 0 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2rem}}.container{width:100%;max-width:var(--layout-max);margin-inline:auto;padding-inline:var(--gutter)}.reading{width:100%;max-width:var(--content-max);margin-inline:auto;padding-inline:var(--gutter)}.lang-switch[data-astro-cid-r2b4e7hz]{font-size:var(--fs-sm);text-decoration:none;color:var(--color-primary);border:var(--border-width) solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-1) var(--space-3);white-space:nowrap;line-height:1.4}.lang-switch[data-astro-cid-r2b4e7hz]:hover{background:var(--color-yolk-bg);border-color:var(--color-yolk);color:var(--color-primary-dark)}.site-header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:50;background:var(--color-bg);border-bottom:var(--border-width) solid var(--color-border)}.site-nav[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:var(--space-4);min-height:56px;flex-wrap:wrap}.brand[data-astro-cid-3ef6ksr2]{font-weight:700;font-size:var(--fs-lg);color:var(--color-primary);text-decoration:none;white-space:nowrap}.nav-right[data-astro-cid-3ef6ksr2]{margin-left:auto;display:flex;align-items:center;gap:var(--space-3)}.nav-drop[data-astro-cid-3ef6ksr2]{position:relative;order:3}.nav-drop[data-astro-cid-3ef6ksr2] summary[data-astro-cid-3ef6ksr2]{list-style:none;cursor:pointer;display:inline-flex;align-items:center;gap:var(--space-2);font-size:var(--fs-sm);color:var(--color-primary);border:var(--border-width) solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-1) var(--space-3);line-height:1.4}.nav-drop[data-astro-cid-3ef6ksr2] summary[data-astro-cid-3ef6ksr2]::-webkit-details-marker{display:none}.burger[data-astro-cid-3ef6ksr2]{width:16px;height:2px;background:var(--color-primary);position:relative;display:inline-block}.burger[data-astro-cid-3ef6ksr2]:before,.burger[data-astro-cid-3ef6ksr2]:after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--color-primary)}.burger[data-astro-cid-3ef6ksr2]:before{top:-5px}.burger[data-astro-cid-3ef6ksr2]:after{top:5px}.nav-links[data-astro-cid-3ef6ksr2]{list-style:none;margin:var(--space-2) 0 0;padding:var(--space-3);position:absolute;right:0;top:100%;background:var(--color-bg);border:var(--border-width) solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);min-width:200px;display:flex;flex-direction:column;gap:var(--space-2)}.nav-links[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{text-decoration:none;color:var(--color-text);display:block;padding:var(--space-2);border-radius:var(--radius-sm)}.nav-links[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]:hover{background:var(--color-yolk-bg);color:var(--color-primary-dark)}@media (min-width: 760px){.site-nav[data-astro-cid-3ef6ksr2]{min-height:64px;flex-wrap:nowrap}.nav-drop[data-astro-cid-3ef6ksr2] summary[data-astro-cid-3ef6ksr2]{display:none}.nav-drop[data-astro-cid-3ef6ksr2]{order:2;margin-left:var(--space-5)}.nav-drop[data-astro-cid-3ef6ksr2][open] .nav-links[data-astro-cid-3ef6ksr2],.nav-links[data-astro-cid-3ef6ksr2]{position:static;display:flex;flex-direction:row;align-items:center;gap:var(--space-4);border:none;box-shadow:none;padding:0;margin:0;min-width:0;background:transparent}.nav-links[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{padding:var(--space-1) var(--space-2);font-size:var(--fs-sm)}}.site-footer[data-astro-cid-sz7xmlte]{background:var(--color-bg-subtle);border-top:var(--border-width) solid var(--color-border);padding-block:var(--space-7);margin-top:var(--space-8)}.footer-inner[data-astro-cid-sz7xmlte]{display:flex;flex-direction:column;gap:var(--space-4)}.footer-nav[data-astro-cid-sz7xmlte]{display:flex;flex-wrap:wrap;gap:var(--space-4)}.footer-nav[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--color-primary);text-decoration:none;font-size:var(--fs-sm)}.footer-nav[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--color-primary-dark);text-decoration:underline}.copyright[data-astro-cid-sz7xmlte]{margin:0;color:var(--color-text-muted);font-size:var(--fs-sm)}.cookie-banner[data-astro-cid-fzbxxtek]{position:fixed;left:0;right:0;bottom:0;z-index:100;background:var(--color-bg);border-top:var(--border-width) solid var(--color-border);box-shadow:0 -2px 8px #10182814;padding:var(--space-4) var(--gutter);display:flex;flex-direction:column;gap:var(--space-3)}.cb-text[data-astro-cid-fzbxxtek]{margin:0;font-size:var(--fs-sm);color:var(--color-text);max-width:var(--layout-max)}.cb-text[data-astro-cid-fzbxxtek] a[data-astro-cid-fzbxxtek]{color:var(--color-primary)}.cb-actions[data-astro-cid-fzbxxtek]{display:flex;flex-wrap:wrap;gap:var(--space-2)}.cb-btn[data-astro-cid-fzbxxtek]{font-size:var(--fs-sm);padding:var(--space-2) var(--space-4);border:var(--border-width) solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);cursor:pointer;text-decoration:none;line-height:1.4}.cb-primary[data-astro-cid-fzbxxtek]{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.cb-primary[data-astro-cid-fzbxxtek]:hover{background:var(--color-primary-dark);color:#fff}.cb-link[data-astro-cid-fzbxxtek]{color:var(--color-primary)}@media (min-width: 760px){.cookie-banner[data-astro-cid-fzbxxtek]{flex-direction:row;align-items:center;justify-content:space-between}}