:root{--c-bg: #f5f6fa;--c-surface: #ffffff;--c-primary: #1a5276;--c-primary-light: #2980b9;--c-accent: #e67e22;--c-green: #27ae60;--c-red: #c0392b;--c-muted: #95a5a6;--c-text: #2c3e50;--c-border: #dfe6e9;--radius: 8px;--shadow: 0 2px 8px rgba(0, 0, 0, .08)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--c-bg);color:var(--c-text);line-height:1.5}button{cursor:pointer;border:none;border-radius:var(--radius);padding:6px 14px;font-size:.85rem;font-weight:600;transition:opacity .15s}button:hover{opacity:.85}button:disabled{opacity:.4;cursor:not-allowed}input,textarea,select{border:1px solid var(--c-border);border-radius:var(--radius);padding:8px 12px;font-size:.9rem;font-family:inherit;width:100%}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--c-primary-light);box-shadow:0 0 0 2px #2980b926}