:root{--bg:#f5f4f0;--surface:#fff;--border:#e4e2dc;--border-soft:#edece8;--ink:#1c1917;--ink-2:#44403c;--ink-3:#78716c;--ink-4:#a8a29e;--accent:#1d4ed8;--accent-light:#eff6ff;--accent-mid:#dbeafe;--success:#15803d;--success-light:#dcfce7;--error:#b91c1c;--error-light:#fef2f2;--gold:#92400e;--gold-light:#fef3c7;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-serif:"EB Garamond", Georgia, serif;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:20px;--shadow-sm:0 1px 3px #0000000f, 0 1px 2px #0000000a;--shadow-md:0 4px 16px #00000012, 0 1px 4px #0000000a;--shadow-lg:0 12px 40px #0000001a, 0 2px 8px #0000000a}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.55}.app-container{max-width:680px;min-height:100vh;margin:0 auto;padding:0 20px 48px}.app-container-desktop{flex-direction:column;max-width:1400px;min-height:100vh;margin:0 auto;padding:0 20px;display:flex}header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:28px;padding:20px 0 18px;display:flex}h1{letter-spacing:-.3px;color:var(--ink);font-size:18px;font-weight:700}.desktop-split{background:var(--surface);border-top:1px solid var(--border);flex:1;gap:0;min-height:calc(100vh - 80px);margin:0 -20px;display:flex}.left-pane{flex:0 0 35%;min-width:320px;max-width:500px;height:calc(100vh - 80px);position:sticky;top:80px}.right-pane{flex:1;min-width:0}.history-list{flex-direction:column;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeSlideDown{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes scanLine{0%{opacity:0;top:0%}10%{opacity:1}90%{opacity:1}to{opacity:0;top:100%}}@keyframes pulseRing{0%{box-shadow:0 0 #1d4ed84d}70%{box-shadow:0 0 0 10px #1d4ed800}to{box-shadow:0 0 #1d4ed800}}@keyframes shimmer{0%{background-position:-400px 0}to{background-position:400px 0}}