.blok-root{touch-action:none;-webkit-user-select:none;user-select:none;background:radial-gradient(80% 55% at 50% 38%,#17366c 0%,#0a1d42 55%,#050f24 100%);position:fixed;inset:0;overflow:hidden}.blok-root:before{content:"";pointer-events:none;opacity:.5;filter:blur(18px);background:radial-gradient(circle at 12% 18%,#c8232a33 0 60px,#0000 61px),radial-gradient(circle at 88% 12%,#f0b42922 0 80px,#0000 81px),radial-gradient(circle at 85% 85%,#c8232a22 0 110px,#0000 111px);position:absolute;inset:0}.blok-canvas{display:block;position:absolute;top:0;left:0}.blok-hud{z-index:2;padding:max(8px, env(safe-area-inset-top)) 12px 6px;box-sizing:content-box;pointer-events:none;grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;height:58px;display:grid;position:absolute;top:0;left:0;right:0}.blok-hud>*{pointer-events:auto}.blok-hud>:last-child{justify-self:end}.blok-counter{color:#081c3b;font-family:var(--font-display);background:linear-gradient(#fff6dc,#f3dc9c);border-radius:999px;align-items:center;gap:6px;padding:5px 12px 5px 8px;font-size:16px;display:flex;box-shadow:0 3px #b77d06,0 8px 18px #0006}.blok-counter .hanzi{color:#fff;background:#c8232a;border-radius:999px;place-items:center;width:26px;height:26px;display:grid}.blok-info{z-index:2;align-items:stretch;display:flex;position:absolute}.blok-card{text-align:left;background:linear-gradient(#ffffff17,#ffffff0a);border:1px solid #fff2;border-radius:18px;align-items:center;gap:12px;width:100%;padding:6px 14px 6px 8px;display:flex;box-shadow:inset 0 1px #ffffff1c}.blok-card:focus-visible{outline-offset:2px;outline:3px solid #ffd45e}.blok-card-glyph{color:#081c3b;background:radial-gradient(circle at 35% 30%,#fffdf6,#f3e6c4);border-radius:14px;flex:none;place-items:center;width:44px;height:44px;font-size:30px;display:grid;box-shadow:0 3px #c9a55a}.blok-tip{text-align:center;color:var(--color-mist);margin:auto;padding:0 8px;font-size:13.5px;line-height:1.3}.blok-bar{z-index:2;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;display:grid;position:absolute}.blok-power{color:#fff;background:linear-gradient(#2a5698,#1b407a);border-radius:16px;justify-content:center;align-items:center;gap:6px;height:46px;padding:0 12px;font-size:14px;font-weight:800;transition:transform .12s,opacity .15s;display:flex;position:relative;box-shadow:0 4px #0c2449,0 8px 16px #0005}.blok-power:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px #0c2449}.blok-power:disabled{opacity:.45}.blok-power:focus-visible{outline-offset:2px;outline:3px solid #ffd45e}.blok-power b{color:#081c3b;background:#ffd45e;border-radius:999px;place-items:center;min-width:22px;height:22px;padding:0 5px;font-size:12px;display:grid}.blok-power.armed{background:linear-gradient(#ff7b5c,#c2361b);animation:.9s ease-in-out infinite blok-pulse;box-shadow:0 4px #7d1d0b,0 0 22px #ff6b4a99}@keyframes blok-pulse{50%{transform:scale(1.05)}}.blok-charge{flex-direction:column;align-items:center;gap:5px;display:flex}.blok-dot{background:#ffffff1f;border:1.5px solid #fff3;border-radius:999px;width:13px;height:13px}.blok-dot.on{background:radial-gradient(circle at 35% 30%,#fff,#ffd45e 60%);border-color:#ffd45e;box-shadow:0 0 10px #ffd45e99}.blok-toast-hint{z-index:3;pointer-events:none;color:#fff;background:#c2361bee;border-radius:999px;width:max-content;max-width:calc(100% - 32px);padding:6px 14px;font-size:13px;font-weight:700;position:absolute;left:50%;translate:-50%;box-shadow:0 6px 16px #0007}.blok-unlock{z-index:4;text-align:center;background:#081c3bf2;border:2px solid #f0b429;border-radius:20px;width:min(330px,100vw - 32px);padding:12px 12px 14px;position:absolute;box-shadow:0 14px 40px #000a,0 0 30px #f0b42944}.blok-chip{color:#fff;background:#ffffff12;border:1px solid #fff2;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;min-width:40px;min-height:40px;padding:3px 6px;display:inline-flex}.blok-chip:hover{background:#fff2}.blok-chip:focus-visible{outline-offset:2px;outline:3px solid #ffd45e}.blok-title{background-color:#050f24;background-position:72% 0;background-repeat:no-repeat;background-size:max(100%,860px);position:fixed;inset:0;overflow-y:auto}.blok-stat{background:#ffffff0f;border:1px solid #ffffff1a;border-radius:16px;align-items:center;gap:10px;padding:10px 12px;display:flex}.blok-stat b{font-family:var(--font-display);color:#fff;font-size:17px;line-height:1.1;display:block}.blok-stat small{color:var(--color-mist-dim);font-size:11.5px;line-height:1.2;display:block}.blok-quiz-glyph{color:#081c3b;background:radial-gradient(circle at 35% 30%,#fffdf6,#f3e6c4);border-radius:22px;flex-direction:column;align-items:center;gap:2px;padding:10px 26px;display:flex;box-shadow:0 5px #c9a55a}.blok-quiz-glyph .pinyin{color:#7a2a12}.blok-listen-big{color:#081c3b;background:#ffd45e;border-radius:999px;place-items:center;width:84px;height:84px;display:grid;box-shadow:0 5px #b77d06,0 0 0 8px #ffd45e22}.blok-listen-big:active{transform:translateY(3px);box-shadow:0 2px #b77d06}.blok-opt{color:#fff;background:#ffffff12;border:2px solid #fff2;border-radius:16px;justify-content:center;align-items:center;gap:10px;min-height:52px;padding:10px 14px;transition:background .15s,border-color .15s,opacity .15s;display:flex;position:relative}.blok-opt-glyph{flex-direction:column;gap:0;min-height:92px}.blok-opt:hover:not(.ok):not(.bad):not(.dim){background:#ffffff20}.blok-opt:focus-visible{outline-offset:2px;outline:3px solid #ffd45e}.blok-opt.ok{background:#1f7a4d66;border-color:#3ddc84}.blok-opt.bad{background:#c8232a55;border-color:#ff4d4f}.blok-opt.dim{opacity:.45}.blok-opt-key{color:var(--color-mist-dim);font-size:11px;font-weight:800;position:absolute;top:6px;left:8px}.blok-opt-mark{position:absolute;top:8px;right:8px}.blok-answer{color:#fff;background:#ffffff10;border-radius:14px;align-items:center;gap:8px;padding:6px 14px;display:flex}.touch-only,.mouse-only{display:inline}.mouse-only{display:none}@media (hover:hover) and (pointer:fine){.mouse-only{display:inline}.touch-only{display:none}}p.mouse-only{display:none}@media (hover:hover) and (pointer:fine){p.mouse-only{display:block}}.blok-power.nudge{animation:.9s ease-in-out infinite blok-pulse;box-shadow:0 4px #0c2449,0 0 0 3px #ffd45e,0 0 24px #ffd45e88}