:root{color:var(--text);background:var(--app-bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--accent: #0f9b8e;--accent-dark: #087b72;--app-bg: #f6f8f8;--text: #1f2937;--heading: #111827;--line: #e3e8eb;--muted: #7c8796;--surface: rgba(255, 255, 255, .92);--surface-strong: #fff;--surface-soft: #f7f9fb;--surface-tint: #f8fbfd;--input-bg: #fff;--nav-bg: rgba(255, 255, 255, .92);--shadow: 0 10px 30px rgba(31, 41, 55, .08);--soft-shadow: 0 5px 18px rgba(31, 41, 55, .06);--shell-width: 1536px;--page-gutter: 56px;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100vh;overflow-x:hidden;background:var(--app-bg)}#root{min-height:100vh}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid rgba(15,155,142,.36);outline-offset:2px}.app-shell{min-height:100vh;display:flex;flex-direction:column;background:radial-gradient(circle at 8% 0%,rgba(15,155,142,.08),transparent 28rem),radial-gradient(circle at 92% 16%,rgba(240,151,69,.1),transparent 26rem),var(--app-bg);color:var(--text)}.theme-dark{--accent: #37d8c5;--accent-dark: #78efe0;--app-bg: #07100f;--text: #d8e5e3;--heading: #f4fbfa;--line: rgba(153, 185, 179, .18);--muted: #90a7a3;--surface: rgba(14, 29, 27, .82);--surface-strong: #10201e;--surface-soft: #142421;--surface-tint: #172a27;--input-bg: #0d1b19;--nav-bg: rgba(12, 25, 23, .86);--shadow: 0 18px 46px rgba(0, 0, 0, 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