.ocr-root{--ocr-fg: #0f172a;--ocr-fg-2: #475569;--ocr-fg-3: #94a3b8;--ocr-border: #e2e8f0;--ocr-panel: #ffffff;--ocr-chip: #f8fafc;--ocr-blue: #2563eb;--ocr-blue-50: #eff6ff;--ocr-r-sm: 8px;--ocr-r-md: 12px;min-height:100vh;background:#f1f5f9;color:var(--ocr-fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}@media (prefers-color-scheme: dark){.ocr-root{--ocr-fg: #e2e8f0;--ocr-fg-2: #cbd5e1;--ocr-fg-3: #64748b;--ocr-border: #334155;--ocr-panel: #0f172a;--ocr-chip: #1e293b;--ocr-blue: #60a5fa;--ocr-blue-50: #1e3a5f;background:#020617}}.ocr-topbar{display:flex;align-items:center;gap:14px;height:54px;padding:0 18px;border-bottom:1px solid var(--ocr-border);background:var(--ocr-panel);position:sticky;top:0;z-index:20}.ocr-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:inherit}.ocr-logo-mark{display:grid;place-items:center;width:26px;height:26px;border-radius:7px;background:var(--ocr-blue);color:#fff;font-size:13px;font-weight:700}.ocr-logo-name{font-size:15px;font-weight:700}.ocr-crumb{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ocr-fg-3)}.ocr-crumb a{color:var(--ocr-fg-2);text-decoration:none}.ocr-crumb a:hover{color:var(--ocr-blue)}.ocr-top-right{display:flex;gap:8px;margin-left:auto}.ocr-btn-ghost{padding:6px 12px;border:1px solid var(--ocr-border);border-radius:var(--ocr-r-sm);background:transparent;color:var(--ocr-fg-2);font-size:12.5px;text-decoration:none;white-space:nowrap;cursor:pointer;transition:all .16s ease}.ocr-btn-ghost:hover{border-color:var(--ocr-blue);color:var(--ocr-blue)}.ocr-main{max-width:1180px;margin:0 auto;padding:22px 18px 40px}.ocr-intro{margin-bottom:16px}.ocr-title{display:flex;align-items:center;gap:9px;margin:0 0 8px;font-size:24px;font-weight:750}.ocr-title-ico{font-size:22px}.ocr-sub{margin:0 0 12px;font-size:13.5px;line-height:1.75;color:var(--ocr-fg-2);max-width:780px}.ocr-sub b{color:var(--ocr-fg)}.ocr-sub a{color:var(--ocr-blue);text-decoration:none}.ocr-sub a:hover{text-decoration:underline}.ocr-facts{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}.ocr-facts li{padding:5px 11px;border:1px solid var(--ocr-border);border-radius:var(--ocr-r-md);background:var(--ocr-panel);font-size:12px;color:var(--ocr-fg-2)}.ocr-facts b{margin-right:5px;color:var(--ocr-blue);font-weight:650}.ocr-stage{position:relative;height:min(74vh,760px);min-height:460px;border:1px solid var(--ocr-border);border-radius:var(--ocr-r-md);background:var(--ocr-panel);overflow:hidden}.ocr-frame{display:block;width:100%;height:100%;border:0;opacity:0;transition:opacity .28s ease}.ocr-frame[data-ready=true]{opacity:1}.ocr-loading{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;gap:10px;font-size:13px;color:var(--ocr-fg-3)}.ocr-spin{width:17px;height:17px;border:2px solid var(--ocr-border);border-top-color:var(--ocr-blue);border-radius:50%;animation:ocr-rot .7s linear infinite}@keyframes ocr-rot{to{transform:rotate(360deg)}}.ocr-fallback{padding:48px 20px;border:1px dashed var(--ocr-border);border-radius:var(--ocr-r-md);background:var(--ocr-panel);text-align:center}.ocr-fallback-t{margin:0 0 6px;font-size:16px;font-weight:650}.ocr-fallback-d{margin:0 0 16px;font-size:13px;color:var(--ocr-fg-3)}.ocr-fallback-d code{padding:2px 6px;border-radius:4px;background:var(--ocr-chip);font-size:12px}.ocr-btn{display:inline-block;padding:9px 20px;border-radius:var(--ocr-r-sm);background:var(--ocr-blue);color:#fff;font-size:13.5px;text-decoration:none;transition:filter .16s ease}.ocr-btn:hover{filter:brightness(1.08)}.ocr-note{margin-top:14px;padding:11px 14px;border-radius:var(--ocr-r-sm);background:var(--ocr-blue-50);font-size:12px;line-height:1.7;color:var(--ocr-fg-2)}.ocr-note a{color:var(--ocr-blue);text-decoration:none}.ocr-note a:hover{text-decoration:underline}@media (max-width: 720px){.ocr-topbar{height:auto;padding:10px 14px;flex-wrap:wrap}.ocr-crumb{order:3;flex-basis:100%}.ocr-main{padding:16px 12px 32px}.ocr-title{font-size:20px}.ocr-stage{height:68vh;min-height:400px}}@media (prefers-reduced-motion: reduce){.ocr-spin{animation:none}.ocr-frame{transition:none}}