:root{--bg: #ffffff;--bg-alt: #fbfbfd;--text: #1d1d1f;--text-muted: #6e6e73;--accent: #0071e3;--accent-hover: #0077ed;--border: rgba(0, 0, 0, .08);--nav-bg: rgba(255, 255, 255, .72);--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.47;font-size:17px}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;display:block}.container{max-width:1024px;margin:0 auto;padding:0 22px}.nav{position:sticky;top:0;z-index:100;background:var(--nav-bg);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--border)}.nav-inner{max-width:1024px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 22px;height:48px;font-size:14px}.nav a{color:var(--text);font-weight:400;opacity:.86;transition:opacity .15s ease}.nav a:hover{opacity:1;text-decoration:none}.nav-brand{font-weight:500;font-size:15px;letter-spacing:-.01em}.nav-links{display:flex;gap:28px}.hero{padding:96px 22px 72px;text-align:center}.hero h1{font-size:clamp(40px,6.4vw,80px);font-weight:600;letter-spacing:-.017em;line-height:1.05;margin:0 0 18px}.hero .gradient{background:linear-gradient(90deg,#0071e3,#9f5cff,#ff2d55);-webkit-background-clip:text;background-clip:text;color:transparent}.hero .lead{font-size:clamp(19px,1.7vw,24px);color:var(--text-muted);max-width:720px;margin:0 auto 32px;font-weight:400;line-height:1.4}.hero .cta{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;align-items:center}.btn{display:inline-block;background:var(--accent);color:#fff;padding:12px 24px;border-radius:980px;font-size:17px;font-weight:400;letter-spacing:-.005em;transition:background .2s ease}.btn:hover{background:var(--accent-hover);text-decoration:none}.btn-ghost{color:var(--accent);font-size:17px;font-weight:400}.btn-ghost:hover{text-decoration:underline}.section{padding:100px 22px;text-align:center}.section.alt{background:var(--bg-alt)}.section.dark{background:#000;color:#f5f5f7}.section.dark p.lead{color:#86868b}.section.dark a{color:#2997ff}.section h2{font-size:clamp(32px,4.5vw,56px);font-weight:600;letter-spacing:-.013em;line-height:1.08;margin:0 auto 18px;max-width:920px}.section p.lead{font-size:clamp(18px,1.5vw,21px);color:var(--text-muted);max-width:640px;margin:0 auto 24px;line-height:1.45}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;max-width:1024px;margin:56px auto 0;text-align:left}.feature{background:#fff;border:1px solid var(--border);border-radius:20px;padding:32px;transition:transform .2s ease,box-shadow .2s ease}.feature:hover{transform:translateY(-2px);box-shadow:0 16px 40px #0000000f}.section.alt .feature{background:#fff}.section.dark .feature{background:#1d1d1f;border-color:#ffffff14}.section.dark .feature:hover{box-shadow:0 16px 40px #0006}.feature .icon{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,#0071e3,#5e5ce6);margin-bottom:16px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:18px}.feature h3{font-size:24px;font-weight:600;letter-spacing:-.005em;margin:0 0 8px;color:inherit}.feature p{color:var(--text-muted);margin:0;font-size:16px;line-height:1.5}.section.dark .feature p{color:#a1a1a6}.post-list{max-width:760px;margin:48px auto 96px;padding:0 22px;list-style:none}.post-list li{padding:28px 0;border-top:1px solid var(--border)}.post-list li:last-child{border-bottom:1px solid var(--border)}.post-list a{color:inherit}.post-list a:hover{text-decoration:none}.post-list a:hover h3{color:var(--accent)}.post-list h3{font-size:26px;font-weight:600;margin:0 0 6px;letter-spacing:-.008em;transition:color .15s ease}.post-list time{font-size:14px;color:var(--text-muted)}article.post{max-width:720px;margin:64px auto 96px;padding:0 22px}article.post h1{font-size:clamp(32px,5vw,56px);font-weight:600;letter-spacing:-.013em;line-height:1.08;margin:0 0 14px}article.post .meta{color:var(--text-muted);margin-bottom:40px;font-size:15px}article.post p{font-size:19px;line-height:1.6;margin:0 0 20px}article.post h2{font-size:32px;font-weight:600;letter-spacing:-.005em;margin:48px 0 16px}article.post h3{font-size:22px;font-weight:600;margin:32px 0 12px}article.post ul,article.post ol{font-size:19px;line-height:1.6;padding-left:24px}article.post li{margin-bottom:6px}article.post code{background:var(--bg-alt);padding:2px 6px;border-radius:6px;font-size:.92em;font-family:SF Mono,ui-monospace,Menlo,Consolas,monospace}article.post pre{background:#1d1d1f;color:#f5f5f7;padding:20px;border-radius:12px;overflow-x:auto;font-size:14px}article.post pre code{background:transparent;color:inherit;padding:0}article.post blockquote{border-left:3px solid var(--accent);margin:24px 0;padding:4px 0 4px 20px;color:var(--text-muted)}.footer{background:var(--bg-alt);color:var(--text-muted);font-size:12px;padding:28px 22px;border-top:1px solid var(--border);text-align:center;line-height:1.5}.footer a{color:var(--text-muted)}@media(max-width:640px){.hero{padding:64px 22px 48px}.section{padding:72px 22px}.nav-links{gap:20px}}