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.op-wordmark{color:#fff}.op-root .op-footer a{color:var(--op-on-night-2);text-decoration:none}.op-root .op-footer a:hover{color:#fff;text-decoration:underline}.op-root .op-header :focus-visible,.op-root .op-night :focus-visible,.op-root .op-footer :focus-visible,.op-root .op-panel :focus-visible{outline-color:var(--op-amber)}.op-root h1.op-hero-title{letter-spacing:-.035em;font-size:36px;font-weight:800;line-height:1.04}.op-root h2.op-h2-xl{font-size:32px;line-height:1.08}@media (min-width:1024px){.op-root h1.op-hero-title{font-size:60px;line-height:1}.op-root h2.op-h2-xl{font-size:44px}}.op-root .op-crumbs{font-size:var(--op-t-small);color:var(--op-ink-3);margin-top:20px}.op-root .op-crumbs a{color:var(--op-ink-3);text-decoration:none}.op-root .op-crumbs a:hover{color:var(--op-accent);text-decoration:underline}.op-root .op-crumbs [aria-current=page]{color:var(--op-ink);font-weight:600}.op-root .op-zh{font-family:var(--font-noto-sc), "Noto Sans SC", "PingFang SC", sans-serif;font-size:1.1em;line-height:1.85}.op-root details>summary{cursor:pointer;justify-content:space-between;align-items:center;gap:16px;min-height:44px;padding:10px 0;font-weight:600;list-style:none;display:flex}.op-root details>summary::-webkit-details-marker{display:none}.op-root details>summary:after{content:"";border-bottom:2px solid;border-right:2px solid;flex:none;width:10px;height:10px;transition:transform .12s;transform:rotate(45deg)translate(-2px,-2px)}.op-root details[open]>summary:after{transform:rotate(-135deg)translate(-2px,-2px)}.op-root{--op-danger:#b42318;--op-zh-tint:#fbeee6;--op-zh-line:#f0cdb8;--op-en-line:#c9d5f1}.op-root .op-app-header{background:var(--op-night);color:var(--op-on-night-2)}.op-root .op-app-header a{color:#fff}.op-root .op-app-header .op-wordmark,.op-root .op-app-header .op-wordmark:hover{color:#fff;text-decoration:none}.op-root .op-eyebrow{font-size:var(--op-t-fine);letter-spacing:.06em;text-transform:uppercase;color:var(--op-ink-3);font-weight:700}.op-root .op-app-title{font-family:var(--font-op-display), system-ui, sans-serif;letter-spacing:-.025em;font-weight:800}.op-root .op-btn{border-radius:999px;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:0 22px;font-weight:700;text-decoration:none;transition:background .12s,border-color .12s;display:inline-flex}.op-root .op-btn:disabled,.op-root .op-btn[aria-disabled=true]{opacity:.5;cursor:not-allowed}.op-root .op-btn.op-btn-amber{background:var(--op-amber);color:var(--op-night)}.op-root .op-btn.op-btn-amber:hover:not(:disabled){color:var(--op-night);background:#f6d58f}.op-root .op-btn.op-btn-quiet{background:var(--op-surface);color:var(--op-ink);border:1.5px solid var(--op-line-strong)}.op-root .op-btn.op-btn-quiet:hover:not(:disabled){border-color:var(--op-ink-3);color:var(--op-ink)}.op-root .op-btn.op-btn-danger{background:var(--op-surface);color:var(--op-danger);border:1.5px solid var(--op-danger)}.op-root .op-station{background:var(--op-surface);border:1px solid var(--op-line);border-radius:var(--op-radius)}.op-root .op-panel-en{background:var(--op-tint);border:1px solid var(--op-en-line);border-radius:var(--op-radius-sm)}.op-root .op-panel-zh{background:var(--op-zh-tint);border:1px solid var(--op-zh-line);border-radius:var(--op-radius-sm)}.op-root .op-edge-en{border-left:6px solid var(--op-accent)}.op-root .op-edge-zh{border-left:6px solid var(--op-clay)}.op-root .op-text-en{color:var(--op-accent)}.op-root .op-text-zh{color:var(--op-clay-ink)}.op-root .op-text-danger{color:var(--op-danger)}.op-root .op-muted{color:var(--op-ink-3)}.op-root.op-app{--coral:var(--op-accent);--coral-dark:var(--op-accent-dark);--coral-light:var(--op-tint);--coral-text:var(--op-accent);--bg:var(--op-paper);--surface:var(--op-surface);--border:var(--op-line);--border-hover:var(--op-line-strong);--text-primary:var(--op-ink);--text-secondary:var(--op-ink-2);--text-muted:var(--op-ink-3);--error:var(--op-danger)}.op-root.op-app .op-mic button.rounded-full,.op-root.op-app .op-mic button.rounded-full:hover{box-shadow:0 4px 20px #3158b84d}.op-root a.op-card-link,.op-root a.op-card-link:hover{color:var(--op-ink);text-decoration:none}.op-root a.op-card-link:hover{border-color:var(--op-line-strong)}