@media (prefers-reduced-motion:reduce){*{animation-duration:0.001ms !important;transition-duration:0.001ms !important}}:root{--paper:#f2f2f7;--header-bg:rgba(255,255,255,0.78);--card:#ffffff;--card-back:#ffffff;--fill:#e5e5ea;--fill-strong:#d1d1d6;--ink:#1d1d1f;--ink-soft:#6e6e73;--ink-faint:#aeaeb2;--accent:#007aff;--accent-deep:#0060df;--accent-tint:rgba(0,122,255,0.12);--accent-ink:#ffffff;--line:rgba(60,60,67,0.13);--good:#34c759;--good-bg:rgba(52,199,89,0.14);--warn:#ff9500;--warn-bg:rgba(255,149,0,0.14);--shadow:0 1px 1px rgba(0,0,0,0.03),0 8px 20px -10px rgba(0,0,0,0.18);--shadow-lg:0 20px 44px -18px rgba(0,0,0,0.35);--radius:20px;--sab:env(safe-area-inset-bottom,0px);--sat:env(safe-area-inset-top,0px);--font-ui:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Helvetica Neue",Arial,sans-serif;--font-display:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Helvetica Neue",Arial,sans-serif;--font-mono:ui-monospace,"SF 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rgba(0,0,0,0.75)}}:root[data-theme="dark"]{--paper:#000000;--header-bg:rgba(0,0,0,0.78);--card:#1c1c1e;--card-back:#1c1c1e;--fill:#2c2c2e;--fill-strong:#3a3a3c;--ink:#f5f5f7;--ink-soft:#98989d;--ink-faint:#636366;--accent:#0a84ff;--accent-deep:#409cff;--accent-tint:rgba(10,132,255,0.18);--accent-ink:#ffffff;--line:rgba(84,84,88,0.55);--good:#30d158;--good-bg:rgba(48,209,88,0.18);--warn:#ff9f0a;--warn-bg:rgba(255,159,10,0.18);--shadow:0 1px 1px rgba(0,0,0,0.3),0 12px 28px -14px rgba(0,0,0,0.65);--shadow-lg:0 24px 48px -18px rgba(0,0,0,0.75)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;min-width:0}html,body{margin:0;padding:0}html{height:100%}body{background:var(--paper);color:var(--ink);font-family:var(--font-ui);min-height:100%;line-height:1.47;-webkit-font-smoothing:antialiased;overscroll-behavior-y:contain;overflow-x:hidden}.app{max-width:520px;margin:0 auto;padding:0 14px calc(148px + 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h2{font-family:var(--font-display);font-size:17px;font-weight:700;margin:0}.text-btn{border:none;background:transparent;color:var(--accent);font-weight:600;font-size:15px;cursor:pointer;padding:6px}.sheet-section{display:flex;flex-direction:column;gap:8px}.sheet-label{font-size:12px;font-weight:600;color:var(--ink-faint);text-transform:uppercase;letter-spacing:0.04em}.search{display:flex;align-items:center;gap:6px;background:var(--fill);border-radius:10px;padding:10px 12px}.search svg{flex:none;color:var(--ink-faint)}.search input{border:none;background:transparent;outline:none;color:var(--ink);font-family:var(--font-ui);font-size:16px;width:100%}.search input::placeholder{color:var(--ink-faint)}select.domain-select{font-family:var(--font-ui);font-size:15px;font-weight:500;color:var(--ink);background:var(--fill);border:none;border-radius:10px;padding:10px 12px;width:100%}.chip-row{display:flex;gap:6px;flex-wrap:wrap}.chip{font-family:var(--font-ui);font-weight:590;font-size:13px;color:var(--ink-soft);background:var(--fill);border:none;border-radius:999px;padding:8px 13px;cursor:pointer;user-select:none;touch-action:manipulation;transition:transform 0.12s ease,background 0.12s ease,color 0.12s ease}.chip:active{transform:scale(0.94)}.chip.active{background:var(--accent);color:var(--accent-ink)}.chip:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.sheet .ctl.full{width:100%;background:var(--warn-bg);color:var(--warn);flex:none}.index-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px}.index-card{background:var(--card);box-shadow:var(--shadow);border-radius:14px;padding:11px 13px;cursor:pointer;display:flex;flex-direction:column;gap:3px;position:relative;transition:transform 0.12s ease;touch-action:manipulation}.index-card:active{transform:scale(0.96)}.index-card .w{font-family:var(--font-display);font-weight:700;font-size:15.5px;letter-spacing:-0.01em}.index-card .cn{font-size:12px;color:var(--ink-soft);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.index-card .dot{position:absolute;top:10px;right:10px;width:7px;height:7px;border-radius:50%;background:var(--fill-strong)}.index-card .dot.known{background:var(--good)}.index-card .dot.hard{background:var(--warn)}footer.foot{text-align:center;font-size:11px;color:var(--ink-faint);padding-top:4px}.wechat-mask{display:none;position:fixed;inset:0;z-index:999;background:rgba(10,10,12,0.86);backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px)}.wechat-mask.show{display:block}.wechat-arrow{position:absolute;top:2px;right:6px}.wechat-card{position:absolute;left:50%;top:38%;transform:translate(-50%,-50%);width:min(86vw,340px);background:var(--card);color:var(--ink);border-radius:18px;box-shadow:var(--shadow-lg);padding:22px 20px 18px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}.wechat-icon{width:44px;height:44px;border-radius:50%;background:var(--accent-tint);color:var(--accent);display:flex;align-items:center;justify-content:center}.wechat-card h2{font-family:var(--font-display);font-weight:700;font-size:17px;margin:0}.wechat-card p{font-size:13.5px;line-height:1.6;color:var(--ink-soft);margin:0}.wechat-card p b{color:var(--ink);font-weight:600}.wechat-actions{display:flex;flex-direction:column;align-items:stretch;gap:4px;width:100%;margin-top:6px}.wechat-actions .ctl{width:100%}.text-btn.light{color:var(--ink-faint);font-size:13px;font-weight:500}.wechat-copied{color:var(--good) !important}@media (max-width:360px){.headword{font-size:28px}button.ctl{padding:10px 10px;font-size:12px}}