:root{--bg: #f0f4f8;--card: #ffffff;--text: #1f2933;--muted: #6b7280;--primary: #2563eb;--primary-dark: #1d4ed8;--green: #16a34a;--green-bg: #f0fdf4;--red: #dc2626;--red-bg: #fef2f2;--gray-bg: #f3f4f6;--border: #e5e7eb;--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;padding-bottom:env(safe-area-inset-bottom)}.container{max-width:640px;margin:0 auto;padding:16px}.header{text-align:center;padding:20px 0 16px}.header h1{font-size:24px;font-weight:700;letter-spacing:.5px}.subtitle{color:var(--muted);font-size:14px;margin-top:4px}.card{background:var(--card);border-radius:var(--radius);padding:16px;margin-bottom:16px;box-shadow:0 1px 3px #00000014}.scan-actions{display:flex;flex-direction:column;gap:10px}.btn{display:inline-block;border:none;border-radius:10px;padding:12px 16px;font-size:15px;font-weight:600;cursor:pointer;text-align:center;transition:opacity .15s,transform .05s;-webkit-tap-highlight-color:transparent;font-family:inherit}.btn:active{transform:scale(.98)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--gray-bg);color:var(--text);border:1px solid var(--border)}.btn-danger{background:var(--red);color:#fff}.btn-lg{padding:14px 18px;font-size:17px}.paste-panel{margin-top:12px;display:flex;flex-direction:column;gap:8px}.paste-panel textarea{width:100%;border:1px solid var(--border);border-radius:8px;padding:10px;font-size:14px;font-family:inherit;resize:vertical}.error-box{margin-top:12px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:8px;padding:10px 12px;font-size:14px;white-space:pre-line}#reader-host{margin-top:12px;min-height:20px}#reader-host video{width:100%;border-radius:8px}#preview-box{margin-top:12px}.preview-tip{margin-top:8px;color:var(--muted);font-size:13px}.result-card{border-radius:var(--radius);padding:18px;margin-bottom:16px;background:var(--card);box-shadow:0 1px 3px #00000014;border-left:6px solid var(--border)}.result-card.ok{border-left-color:var(--green);background:var(--green-bg)}.result-card.bad{border-left-color:var(--red);background:var(--red-bg)}.result-card.neutral{border-left-color:#9ca3af;background:var(--gray-bg)}.result-card h2{font-size:20px;margin-bottom:8px}#result-status{font-size:15px;font-weight:600;margin-bottom:12px;word-break:break-all}.ok-text{color:var(--green)}.bad-text{color:var(--red)}.neutral-text{color:var(--muted)}.badge{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;vertical-align:middle}.badge.danger{background:var(--red);color:#fff}.warn-text{color:#b45309;font-size:14px;margin:6px 0}.reasons,.checklist{margin:8px 0 8px 20px}.reasons li,.checklist li{margin-bottom:4px;font-size:14px}.check-title{font-weight:600;margin-top:10px;font-size:14px}.raw-preview{margin:8px 0;font-size:13px;color:var(--muted);word-break:break-all;background:#0000000a;padding:8px;border-radius:6px}.result-actions{margin-top:14px;display:flex;flex-direction:column;gap:8px}.info-card h2{font-size:17px;margin-bottom:10px}.info-card ul{margin-left:18px}.info-card li{font-size:14px;margin-bottom:6px}.footer{text-align:center;color:var(--muted);font-size:12px;padding:8px 0 24px}.hidden{display:none!important}@media (prefers-color-scheme: dark){:root{--bg: #0f172a;--card: #1e293b;--text: #e2e8f0;--muted: #94a3b8;--border: #334155;--gray-bg: #334155;--green-bg: #052e16;--red-bg: #450a0a}.btn-secondary{background:var(--gray-bg);color:var(--text)}.raw-preview{background:#ffffff0f}.error-box{background:#ffedd51a;color:#fdba74;border-color:#92400e}}