:root{--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-light: #dbeafe;--color-danger: #dc2626;--color-danger-hover: #b91c1c;--color-success: #16a34a;--color-warning: #d97706;--color-gray: #6b7280;--color-gray-light: #f3f4f6;--color-gray-border: #e5e7eb;--color-text: #111827;--color-text-secondary: #374151;--color-text-muted: #6b7280;--color-bg: #ffffff;--color-bg-surface: #f9fafb;--color-obs-info: #3b82f6;--color-obs-open: #ef4444;--color-obs-pending: #f97316;--color-obs-verified: #22c55e;--color-obs-removed: #9ca3af;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--font-xs: 12px;--font-sm: 13px;--font-base: 14px;--font-md: 16px;--font-lg: 18px;--font-xl: 20px;--font-2xl: 24px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 12px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .2);--header-height: 56px;--bottom-nav-height: 56px;--touch-target: 44px}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:var(--font-base);color:var(--color-text);background-color:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100dvh;display:flex;flex-direction:column}h1,h2,h3,h4{margin:0;font-weight:600}p{margin:0}a{color:var(--color-primary);text-decoration:none}button{min-height:var(--touch-target);padding:10px 16px;font-size:var(--font-md);font-family:inherit;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);transition:background-color .15s,opacity .15s;-webkit-tap-highlight-color:transparent}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-secondary{background:var(--color-bg);color:var(--color-text);border-color:var(--color-gray-border)}.btn-danger{background:var(--color-danger);color:#fff;border-color:var(--color-danger)}.btn-ghost{background:none;border-color:transparent;color:var(--color-text-secondary)}.btn-full{width:100%}input,textarea,select{font-family:inherit;font-size:var(--font-base);padding:10px 12px;border:1px solid var(--color-gray-border);border-radius:var(--radius-md);width:100%;box-sizing:border-box;color:var(--color-text);background:var(--color-bg);min-height:var(--touch-target)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}textarea{resize:vertical;min-height:80px}label{display:block;margin-bottom:var(--spacing-xs);font-size:var(--font-base);font-weight:500;color:var(--color-text-secondary)}.form-group{margin-bottom:var(--spacing-md)}.field-error{color:var(--color-danger);font-size:var(--font-xs);margin-top:var(--spacing-xs)}.error-text{color:var(--color-danger)}.loading-text{color:var(--color-text-muted);text-align:center;padding:var(--spacing-xl)}.card{background:var(--color-bg);border:1px solid var(--color-gray-border);border-radius:var(--radius-lg);padding:var(--spacing-md);box-shadow:var(--shadow-sm)}