:root{--ink:#0b1220;--ink-soft:#1a2333;--accent:#12b886;--accent-dark:#0ca678;--muted:#5b6472;--muted-soft:#8a919e;--line:#e6e9ef;--bg:#f5f7fa;--card:#ffffff;--danger:#e03131;--danger-bg:#fff5f5;--radius:16px;--shadow:0 1px 3px rgba(11,18,32,0.04),0 8px 28px rgba(11,18,32,0.06);--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.55}a{color:var(--accent-dark);text-decoration:none}a:hover{text-decoration:underline}.page{min-height:100dvh;display:flex;flex-direction:column}.shell{padding:24px 20px 48px;flex:1 1;flex-direction:column}.shell,.topbar{width:100%;max-width:560px;margin:0 auto;display:flex}.topbar{align-items:center;padding:18px 20px}.wordmark{font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--ink)}.wordmark span{color:var(--accent)}.center{flex:1 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