:root{--background:#f7f7f8;--foreground:#151515;--panel:#fff;--border:#d6d6d8;--muted:#4e4e55}@media (prefers-color-scheme:dark){:root{--background:#0f1216;--foreground:#f3f4f6;--panel:#171b22;--border:#2b313a;--muted:#b7bec8}}:root[data-theme=light]{--background:#f7f7f8;--foreground:#151515;--panel:#fff;--border:#d6d6d8;--muted:#4e4e55}:root[data-theme=dark]{--background:#0f1216;--foreground:#f3f4f6;--panel:#171b22;--border:#2b313a;--muted:#b7bec8}*{box-sizing:border-box;margin:0;padding:0}html,body{max-width:100vw;overflow-x:hidden}body{background:radial-gradient(circle at 10% 0%,#fef4d6 0%,var(--background)35%);color:var(--foreground);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Pretendard,Noto Sans KR,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}:root[data-theme=dark] body{background:radial-gradient(circle at 10% 0%,#1b2b36 0%,var(--background)35%)}a{color:inherit;text-decoration:none}.container{max-width:1080px;margin:0 auto;padding:0 20px}.site-header{z-index:10;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--background)88%,transparent);position:sticky;top:0}.nav-wrap{justify-content:space-between;align-items:center;gap:12px;min-height:64px;display:flex}.brand{font-weight:700}.nav-links{color:var(--muted);flex-wrap:wrap;gap:16px;font-size:.95rem;display:flex}.theme-toggle{border:1px solid var(--border);background:var(--panel);color:var(--foreground);cursor:pointer;border-radius:10px;padding:6px 10px}.tool-page{max-width:1080px;margin:0 auto;padding:32px 20px 64px}.tool-page h1{margin-bottom:8px}.tool-page p{color:var(--muted);line-height:1.6}.tool-links{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:20px;display:grid}.tool-links a{border:1px solid var(--border);background:var(--panel);border-radius:12px;padding:14px}@media (max-width:900px){.nav-links{display:none}}