:root{--brand:#121b42;--brand-deep:#0b1231;--accent:#43baf9;--accent-strong:#1473b5;--accent-soft:#43baf924;--text:#1a2233;--muted:#5d6773;--faint:#8b939c;--line:#e6e9ef;--surface:#f7f9fc;--content-width:1120px;--radius:12px;--sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;font:16px/1.7 var(--sans);color:var(--muted);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#fff}*,:before,:after{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{min-width:320px;margin:0}a{color:var(--accent-strong);text-decoration:none}a:hover{text-decoration:underline}::selection{background:var(--accent-soft);color:var(--brand)}.site-nav{z-index:20;border-bottom:1px solid var(--line);-webkit-backdrop-filter:saturate(180%)blur(12px);background:#ffffffdb;position:sticky;top:0;box-shadow:0 1px 12px 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solid var(--line);text-align:center;background:radial-gradient(880px 240px at 50% -60%,#43baf938,#0000 72%),linear-gradient(#f5f9ff 0%,#fff 82%);padding:64px 28px 54px;position:relative}.site-header h1{letter-spacing:.14em;text-indent:.14em;color:var(--brand);margin:0;font-size:clamp(26px,3.2vw,38px);font-weight:700;line-height:1.32}.site-header h1:after{content:"";background:var(--accent);border-radius:3px;width:34px;height:3px;margin:18px auto 0;display:block}.page{width:100%;max-width:var(--content-width);margin:0 auto;padding:56px 28px 88px}.section-label{letter-spacing:.18em;color:var(--accent-strong);margin:0 0 10px;font-size:13px;font-weight:600}a:focus-visible{outline:2px solid var(--accent-strong);outline-offset:3px;border-radius:2px}@media (width<=640px){.site-header{padding:44px 20px 40px}.site-header h1:after{margin-top:14px}.page{padding:40px 20px 64px}}.profile{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(#fff 0%,#fbfdff 100%);align-items:flex-start;gap:26px;padding:30px 32px;display:flex;box-shadow:0 6px 24px #121b420d}.avatar{object-fit:cover;background:var(--surface);width:76px;height:76px;box-shadow:0 0 0 3px #fff, 0 0 0 4px var(--accent-soft);border-radius:50%;flex:none;display:block}.bio{min-width:0;margin:0;padding:2px 0}.bio p{color:var(--muted);margin:0;font-size:15px;line-height:2}.bio p+p{margin-top:12px}.bio .bio-lead{color:var(--text)}.bio .bio-links{margin-top:16px;font-size:13px}.bio a{color:var(--accent-strong);font-weight:500}.bio a:hover{color:var(--brand)}.bio .divider{color:var(--faint);margin:0 6px}@media (width<=640px){.profile{flex-direction:column;gap:18px;padding:24px 20px}.avatar{width:64px;height:64px}.bio p{font-size:14px;line-height:1.9}}.tool-item{display:flex}.tool-card{text-align:center;color:inherit;background:#fff;border:1px solid #f0f2f4;border-radius:10px;flex-direction:column;flex:1;align-items:center;padding:20px 14px 14px;text-decoration:none;transition:transform 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