:root{--bg: #0e1117;--panel: #161b22;--border: #2a2e39;--text: #d1d4dc;--muted: #8b949e;--accent: #26a69a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Apple SD Gothic Neo,Noto Sans KR,sans-serif}.app{max-width:1100px;margin:0 auto;padding:24px 16px 48px}.header h1{margin:0 0 4px;font-size:1.6rem}.muted{color:var(--muted);font-size:.9rem}.error{color:#ef5350;font-size:.9rem}.symbol-selector{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.chip{background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:999px;padding:6px 16px;font-size:.9rem;cursor:pointer;transition:all .15s ease}.chip:hover{border-color:var(--accent)}.chip--active{background:var(--accent);border-color:var(--accent);color:#06251f;font-weight:600}.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:16px 0}.metric{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px;display:flex;flex-direction:column;gap:6px}.metric__label{color:var(--muted);font-size:.8rem}.metric__value{font-size:1.3rem;font-weight:600;font-variant-numeric:tabular-nums}.chart-card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px}