:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tool: #f1f3f5;--text-primary: #111111;--text-secondary: #555555;--accent: #000000;--accent-hover: #333333;--accent-light: #f1f3f5;--border: #e9ecef;--border-focus: #111111;--success: #2b8a3e;--error: #c92a2a;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;--max-width: 1100px;--radius: 0px;--transition: all .15s ease}[data-theme=dark]{--bg-primary: #0a0a0c;--bg-secondary: #121216;--bg-tool: #181820;--text-primary: #f1f3f5;--text-secondary: #a0a0b0;--accent: #ffffff;--accent-hover: #dddddd;--accent-light: #1c1c24;--border: #262632;--border-focus: #ffffff;--success: #40c057;--error: #fa5252}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);font-size:16px;line-height:1.5;background-color:var(--bg-primary);color:var(--text-primary);scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{min-height:100vh;display:flex;flex-direction:column}main{flex:1}a{color:inherit;text-decoration:none;transition:var(--transition)}button{font-family:inherit;background:none;border:none;cursor:pointer}img{max-width:100%;height:auto;display:block}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}.section{padding:4rem 0}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.25;color:var(--text-primary);margin-bottom:1rem}h1{font-size:2.5rem;letter-spacing:-.03em}h2{font-size:1.75rem;letter-spacing:-.02em;border-bottom:1px solid var(--border);padding-bottom:.5rem;margin-top:2rem}h3{font-size:1.25rem;letter-spacing:-.01em}p{color:var(--text-secondary);margin-bottom:1.5rem;font-size:1rem;line-height:1.6}.header-wrapper{border-bottom:1px solid var(--border);position:sticky;top:0;background-color:var(--bg-primary);z-index:100}.header-container{display:flex;justify-content:space-between;align-items:center;height:4rem}.logo{font-size:1.5rem;font-weight:900;letter-spacing:-.05em;color:var(--text-primary);display:flex;align-items:center}.nav-links{display:flex;gap:2rem;list-style:none}.nav-link{font-size:.9rem;font-weight:500;color:var(--text-secondary)}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.header-actions{display:flex;align-items:center;gap:1.25rem}.footer-wrapper{border-top:1px solid var(--border);background-color:var(--bg-secondary);padding:4rem 0;margin-top:2rem}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:3rem;margin-bottom:3rem}@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:2rem}}.footer-brand h3{font-size:1.25rem;font-weight:900;margin-bottom:.5rem}.footer-brand p{font-size:.875rem}.footer-col h4{font-size:.875rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:1.25rem;color:var(--text-primary)}.footer-list{list-style:none}.footer-list li{margin-bottom:.75rem}.footer-list a{font-size:.875rem;color:var(--text-secondary)}.footer-list a:hover{color:var(--text-primary)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:2rem;border-top:1px solid var(--border);font-size:.875rem;color:var(--text-secondary)}.breadcrumbs{display:flex;align-items:center;gap:.5rem;font-size:.85rem;color:var(--text-secondary);list-style:none;margin-top:1.5rem;margin-bottom:1.5rem}.breadcrumbs li:not(:last-child):after{content:"/";margin-left:.5rem;color:var(--border)}.breadcrumbs a:hover{color:var(--text-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.5rem;font-size:.9rem;font-weight:600;border:1px solid var(--border);background-color:var(--bg-primary);color:var(--text-primary);transition:var(--transition)}.btn:hover{border-color:var(--border-focus)}.btn-primary{background-color:var(--accent);color:var(--bg-primary);border-color:var(--accent)}.btn-primary:hover{background-color:var(--accent-hover);border-color:var(--accent-hover)}.select-input{padding:.5rem 1rem;font-size:.9rem;font-family:inherit;border:1px solid var(--border);background-color:var(--bg-primary);color:var(--text-primary);outline:none;transition:var(--transition)}.select-input:focus{border-color:var(--border-focus)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-top:2rem}.tool-card{border:1px solid var(--border);padding:1.5rem;background-color:var(--bg-primary);transition:var(--transition)}.tool-card:hover{border-color:var(--border-focus)}.tool-card h3{font-size:1.1rem;margin-bottom:.5rem;display:flex;justify-content:space-between;align-items:center}.tool-card p{font-size:.875rem;margin-bottom:0}.theme-btn[data-astro-cid-x3pjskd3]{display:inline-flex;align-items:center;justify-content:center;width:2.25rem;height:2.25rem;border:1px solid var(--border);transition:var(--transition);color:var(--text-primary)}.theme-btn[data-astro-cid-x3pjskd3]:hover{border-color:var(--border-focus)}.icon[data-astro-cid-x3pjskd3]{display:none}[data-theme=light] .moon-icon[data-astro-cid-x3pjskd3],[data-theme=dark] .sun-icon[data-astro-cid-x3pjskd3]{display:block}.lang-switcher[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center}.lang-link[data-astro-cid-3ef6ksr2]{font-size:.85rem;font-weight:700;padding:.25rem .5rem;border:1px solid var(--border);color:var(--text-secondary);transition:var(--transition)}.lang-link[data-astro-cid-3ef6ksr2]:hover{color:var(--text-primary);border-color:var(--border-focus)}