:root{color-scheme:light;--color-bg: #fbfbfd;--color-surface: #ffffff;--color-surface-soft: #f5f5f7;--color-text: #1d1d1f;--color-muted: #6e6e73;--color-border: #d2d2d7;--color-border-strong: #b8b8bd;--color-primary: #1d1d1f;--color-accent: #0066cc;--color-warm: #8a6a2f;--color-danger: #8b3a3a;--shadow-card: 0 10px 28px rgba(31, 35, 40, .06);--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;--max-page: 1120px;--max-reading: 740px;--radius: 8px;--space-page: clamp(20px, 4vw, 48px)}*{box-sizing:border-box}html{min-width:320px;background:var(--color-bg);text-size-adjust:100%}body{margin:0;color:var(--color-text);background:linear-gradient(180deg,#fffc,#fbfbfd00 360px),var(--color-bg);font-family:var(--font-sans);line-height:1.65}a{color:inherit;text-decoration-color:#2f6f7361;text-underline-offset:.18em}a:hover,a:focus-visible{color:var(--color-accent)}:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}img,svg{max-width:100%;height:auto}.site-shell{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1}.container{width:min(100% - 2 * var(--space-page),var(--max-page));margin-inline:auto}.reading{width:min(100% - 2 * var(--space-page),var(--max-reading));margin-inline:auto}.eyebrow{margin:0 0 10px;color:var(--color-accent);font-size:.78rem;font-weight:700;letter-spacing:0;text-transform:uppercase}.page-title{margin:0;max-width:920px;font-size:clamp(2.35rem,5.2vw,4.9rem);line-height:1.02;letter-spacing:0;text-wrap:balance;overflow-wrap:anywhere}.page-hero{padding-block:clamp(82px,13vw,156px) clamp(48px,8vw,92px);text-align:center}.page-hero .page-title,.page-hero .lede{margin-inline:auto}.page-hero .lede{max-width:760px}.section-title{margin:0;font-size:clamp(1.45rem,3vw,2.1rem);line-height:1.18;letter-spacing:0}.lede{max-width:760px;margin:18px 0 0;color:var(--color-muted);font-size:clamp(1rem,2vw,1.2rem)}.page-section{padding-block:clamp(54px,8vw,94px)}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:1px solid var(--color-primary);border-radius:999px;background:var(--color-primary);color:#fff;font-weight:700;text-decoration:none;transition:transform .16s ease,background-color .16s ease,border-color .16s ease}.button.secondary{background:transparent;color:var(--color-primary);border-color:var(--color-border-strong)}.button:hover,.button:focus-visible{transform:translateY(-1px);color:#fff;background:#25303a}.button.secondary:hover,.button.secondary:focus-visible{color:var(--color-primary);background:var(--color-surface-soft)}.card{min-width:0;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);box-shadow:none}.card-pad{padding:clamp(18px,3vw,26px)}.meta{color:var(--color-muted);font-size:.92rem}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.tag{display:inline-flex;align-items:center;min-height:28px;padding:3px 9px;border:1px solid var(--color-border);border-radius:999px;color:var(--color-muted);background:var(--color-surface);font-size:.82rem}.article-content{color:var(--color-text);font-size:1.04rem}.article-content h2,.article-content h3{margin-top:2em;margin-bottom:.6em;line-height:1.25;letter-spacing:0}.article-content h2{font-size:1.55rem}.article-content h3{font-size:1.18rem}.article-content p,.article-content ul,.article-content ol{margin-block:1em}.article-content li+li{margin-top:.35em}.article-content blockquote{margin:1.5em 0;padding:.4em 0 .4em 1em;border-left:3px solid var(--color-accent);color:var(--color-muted)}.article-content code{padding:.1em .35em;border-radius:5px;background:var(--color-surface-soft);font-size:.92em}.article-content pre{overflow-x:auto;padding:16px;border:1px solid var(--color-border);border-radius:var(--radius);background:#20262d;color:#f7f7f5}.article-content pre code{padding:0;background:transparent;color:inherit}.empty-state{width:min(100% - 2 * var(--space-page),760px);margin:0 auto;padding-block:clamp(28px,5vw,44px);border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);color:var(--color-muted);text-align:center}@media(max-width:820px){.grid.two,.grid.three{grid-template-columns:1fr}}@media(max-width:520px){:root{--space-page: 18px}.page-section{padding-block:34px}.button-row{flex-direction:column}.button{width:100%}}.logo-mark[data-astro-cid-yykneotp]{display:block;width:44px;height:44px;border:1px solid var(--color-border);border-radius:10px;background:#fff;object-fit:cover}.site-header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(210,210,215,.72);background:#fbfbfddb;backdrop-filter:blur(18px)}.header-inner[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px}.brand[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;flex:0 0 auto;gap:12px;color:var(--color-text);text-decoration:none}.brand[data-astro-cid-3ef6ksr2] strong[data-astro-cid-3ef6ksr2],.brand[data-astro-cid-3ef6ksr2] small[data-astro-cid-3ef6ksr2]{display:block;line-height:1.1}.brand[data-astro-cid-3ef6ksr2] strong[data-astro-cid-3ef6ksr2]{font-size:1rem;letter-spacing:0}.brand[data-astro-cid-3ef6ksr2] small[data-astro-cid-3ef6ksr2]{margin-top:3px;color:var(--color-muted);font-size:.74rem}.nav[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:flex-end;gap:4px;min-width:0}.nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{display:inline-flex;flex-direction:column;justify-content:center;min-height:44px;padding:7px 10px;border-radius:999px;color:var(--color-muted);text-decoration:none;transition:background-color .16s ease,color .16s ease}.nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]:hover,.nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]:focus-visible,.nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2][aria-current=page]{color:var(--color-text);background:#0000000b}.nav[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2],.nav[data-astro-cid-3ef6ksr2] small[data-astro-cid-3ef6ksr2]{white-space:nowrap;line-height:1.1}.nav[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2]{font-size:.9rem;font-weight:700}.nav[data-astro-cid-3ef6ksr2] small[data-astro-cid-3ef6ksr2]{margin-top:3px;font-size:.68rem}@media(max-width:880px){.header-inner[data-astro-cid-3ef6ksr2]{align-items:flex-start;flex-direction:column;gap:10px;padding-block:12px}.nav[data-astro-cid-3ef6ksr2]{width:100%;justify-content:flex-start;flex-wrap:wrap}}@media(max-width:520px){.brand[data-astro-cid-3ef6ksr2] small[data-astro-cid-3ef6ksr2],.nav[data-astro-cid-3ef6ksr2] small[data-astro-cid-3ef6ksr2]{display:none}.header-inner[data-astro-cid-3ef6ksr2]{min-height:68px}.nav[data-astro-cid-3ef6ksr2] a[data-astro-cid-3ef6ksr2]{min-height:40px;padding-inline:9px}}.site-footer[data-astro-cid-sz7xmlte]{margin-top:64px;border-top:1px solid var(--color-border);background:#ffffff73}.footer-inner[data-astro-cid-sz7xmlte]{display:flex;align-items:flex-start;justify-content:space-between;gap:28px;padding-block:30px;color:var(--color-muted);font-size:.92rem}.footer-inner[data-astro-cid-sz7xmlte] strong[data-astro-cid-sz7xmlte]{color:var(--color-text)}.footer-inner[data-astro-cid-sz7xmlte] p[data-astro-cid-sz7xmlte]{margin:6px 0 0;max-width:520px}.footer-links[data-astro-cid-sz7xmlte]{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:12px}@media(max-width:720px){.footer-inner[data-astro-cid-sz7xmlte],.footer-links[data-astro-cid-sz7xmlte]{flex-direction:column;align-items:flex-start;justify-content:flex-start}}