.ko-ai-canvas{height:calc(100svh - 7.5rem);min-height:480px;position:relative}.ko-ai-stage{--ai-head:100;position:absolute;inset:0;container:ai-stage/size}.ko-ai-frame{flex-direction:column;gap:1.25rem;display:flex}@media (width>=64rem){.ko-ai-track,.ko-ai-frame{display:contents}}@media (width<64rem){.ko-ai-canvas{flex:1 1 0;height:auto;min-height:300px}.ko-ai-frame{height:calc(100svh - 6.5rem);max-height:56rem}}.ko-ai-captions{display:grid}.ko-ai-captions>*{grid-area:1/1}.ko-ai-step{margin-bottom:.75rem}.ko-ai-subtitle{margin-top:1.125rem}.ko-ai-cap-h{font-family:var(--font-serif);font-size:var(--ko-type-sub);text-wrap:balance;font-weight:500;line-height:1.25}.ko-ai-rail{gap:.5rem;display:flex}.ko-ai-rail:not(.ko-ai-chapters) li{background:var(--ebony-text-primary);opacity:.28;width:1.5rem;height:1px}.ko-ai-chapters{gap:4px;max-width:17rem}.ko-ai-chapters li{flex:1 1 0;min-width:44px;display:flex}.ko-ai-chapter{width:100%;min-height:44px;color:var(--color-fg-3);text-align:left;cursor:pointer;flex-direction:column;justify-content:center;gap:.45rem;transition:color .3s;display:flex}.ko-ai-chapter:hover,.ko-ai-chapter[aria-current]{color:var(--color-fg)}.ko-ai-chapter:focus-visible{outline:1px solid var(--color-fg-2);outline-offset:1px;border-radius:2px}.ko-ai-chapter-n{font-variant-numeric:tabular-nums;font-size:.75rem;font-weight:600;line-height:1}.ko-ai-chapter-bar{background:color-mix(in srgb, var(--ebony-text-primary) 18%, transparent);width:100%;height:2px;display:block;position:relative;overflow:hidden}.ko-ai-chapter-fill{background:var(--ebony-text-primary);transform-origin:0;position:absolute;inset:0;transform:scaleX(0)}.ko-ai-chapter-name{display:none}@media (width>=64rem){.ko-ai-caption-box{margin-top:clamp(1.5rem,4vh,2.5rem)}.ko-ai-chapters{--ai-row-size:var(--ko-type-list);flex-direction:column;gap:0;max-width:30rem}.ko-ai-chapters li{min-width:0}.ko-ai-chapter{grid-template-columns:2.25rem minmax(0,1fr);align-items:baseline;row-gap:.625rem;padding-top:.75rem;display:grid}.ko-ai-chapter-n{grid-area:1/1}.ko-ai-chapter-name{font-family:var(--font-serif);font-size:var(--ai-row-size);letter-spacing:-.01em;grid-area:1/2;font-weight:500;line-height:1.2;display:block}.ko-ai-chapter-bar{grid-area:2/1/3/3}.ko-ai-chapter:not([aria-current]) .ko-ai-chapter-fill{background:var(--color-line-strong)}.js .ko-ai:not(.ko-ai-flow,[data-ai-motion=scrub]) .ko-ai-captions{display:none}}.ko-ai-layer{position:absolute;inset:0}.ko-ai-ribbon{--ai-ribbon:18cqh;left:0;right:0;top:calc(50cqh - var(--ai-ribbon) / 2);height:var(--ai-ribbon);clip-path:inset(-2000px calc(100% - var(--ai-head) * 1%) -2000px 0);position:absolute}.ko-ai-hairline{background:var(--ebony-hairline-strong);height:1px;position:absolute;top:50cqh;left:0;right:0}.ko-ai-head{height:calc(18cqh + 20px);top:calc(41cqh - 10px);left:calc(var(--ai-head) * 1%);background:var(--ebony-text-primary);width:1px;position:absolute}.ko-ai-seg{height:100%;position:absolute;top:0;overflow:visible}.ko-ai-seg path{fill:none;stroke:currentColor;stroke-width:1.5px;stroke-linecap:round;vector-effect:non-scaling-stroke}.ko-ai-seg [data-density=narrow]{display:none}@media (width<64rem){.ko-ai-ribbon{--ai-ribbon:14cqh}.ko-ai-head{height:calc(14cqh + 16px);top:calc(43cqh - 8px)}.ko-ai-seg [data-density=wide]{display:none}.ko-ai-seg [data-density=narrow]{display:block}}.ko-ai-meta{position:absolute;bottom:calc(59cqh + 18px);left:0}@media (width<64rem){.ko-ai-meta{bottom:calc(57cqh + 14px)}}.ko-ai-minutes{height:36px;position:absolute;top:calc(59cqh + 12px);left:0;right:0}@media (width<64rem){.ko-ai-minutes{top:calc(57cqh + 10px)}}.ko-ai-minutes svg{width:100%;height:12px;display:block;overflow:visible}.ko-ai-minutes path{stroke:var(--ebony-text-tertiary);stroke-width:1px;vector-effect:non-scaling-stroke}.ko-ai-minutes span{color:var(--ebony-text-tertiary);white-space:nowrap;font-size:11px;position:absolute;top:16px;translate:-50%}.ko-ai-minutes span:first-of-type{translate:0}.ko-ai-tag,.ko-ai-meta{white-space:nowrap;font-size:12px}.ko-ai-tag-playing{position:absolute;top:-30px;left:0}.ko-ai-transcript{z-index:2;width:min(100%,460px,56cqw);font-size:clamp(13px,1.7cqh,15px);line-height:1.45;position:absolute;top:6cqh;left:0}.ko-ai-transcript ol{margin:10px 0 0;padding:0;list-style:none}.ko-ai-transcript li{color:var(--ebony-text-tertiary);grid-template-columns:3.25em 1fr;gap:0 .75em;padding:.28em 0;display:grid}.ko-ai-when{align-content:start;display:grid}.ko-ai-when>*{grid-area:1/1}.ko-ai-transcript time{font-variant-numeric:tabular-nums;font-size:.86em;line-height:1.7}.ko-ai-mark{width:1.4em;height:1.4em;box-shadow:inset 0 0 0 1px var(--ebony-hairline-strong);color:var(--ebony-text-primary);font-variant-numeric:tabular-nums;border-radius:999px;place-items:center;margin-top:.05em;font-size:.86em;font-weight:600;line-height:1;display:grid}.ko-ai-bar{width:var(--ai-len);background:var(--ebony-text-tertiary);opacity:.55;border-radius:999px;height:.5em;margin-top:.5em;display:block}.ko-ai-transcript [data-ai-quote]{color:var(--ebony-text-primary)}.ko-ai-transcript [data-ai-quote] .ko-ai-line,.ko-ai-flyer{font-family:var(--font-serif);text-wrap:pretty;font-style:italic;line-height:1.32}.ko-ai-flyer{z-index:4;box-sizing:border-box;color:var(--ebony-text-primary);transform-origin:50%;border-radius:1em;padding:.3em .55em;position:absolute}.ko-ai-flyer,.ko-ai-transcript [data-ai-quote] .ko-ai-line{font-size:calc(1.1*clamp(13px,1.7cqh,15px))}@media (width<64rem){.ko-ai-transcript{width:52cqw;font-size:clamp(10px,1.9cqh,13px);line-height:1.4}.ko-ai-flyer,.ko-ai-transcript [data-ai-quote] .ko-ai-line{font-size:calc(1.1*clamp(10px,1.9cqh,13px))}.ko-ai-transcript li{padding:.2em 0}}@container ai-stage (height<=430px){.ko-ai-transcript li:not([data-ai-quote]){display:none}}.ko-ai-lane{border-top:1px solid var(--ebony-hairline);color:var(--ebony-text-secondary);justify-content:space-between;gap:16px;padding-top:6px;font-size:12px;line-height:1.2;display:flex;position:absolute;left:0;right:0}.ko-ai-lane .ko-ai-sorted{color:var(--ebony-text-tertiary);white-space:nowrap}@media (width<64rem){.ko-ai-lane .ko-ai-sorted{display:none}}.ko-ai-page{--w:min(40cqw, 36cqh, (98cqh - 6.5rem) / 2.45);z-index:3;width:var(--w);position:absolute;top:2cqh;right:0}.ko-ai-page .ko-pin{width:20px;height:20px;font-size:11px}.ko-ai-page .ko-sheet{padding-top:4%}.ko-ai-page .ko-sheet-label{text-wrap:balance}@media (width<64rem){.ko-ai-page{--w:min(46cqw, 38cqh - 17px, (100cqh - 6.5rem) / 2.45);top:max(0px, min(50cqh - var(--w) * 1.23 - 20px, 100cqh - var(--w) * 2.45 - 6.5rem))}.ko-ai-page .ko-pin{width:16px;height:16px;font-size:9px}}.ko-ai-phone{--ph:min(88cqh, 704px);--pw:calc(var(--ph) * .478);--pb:calc(var(--pw) * .03);--sw:calc(var(--pw) - 2 * var(--pb));--ai-bezel:#0a0908;z-index:2;top:calc(50cqh - var(--ph) / 2);left:calc(50cqw - var(--pw) / 2);width:var(--pw);height:var(--ph);padding:var(--pb);border-radius:calc(var(--sw) * .135 + var(--pb));background:var(--ai-bezel);box-shadow:inset 0 0 0 1px var(--ebony-hairline-strong);font-size:clamp(9px, var(--sw) * .046, 15px);position:absolute}@media (width<64rem){.ko-ai-phone{--ph:min(100cqh, 640px, 100cqw / .478)}}.ko-ai-screen{width:100%;height:100%;padding:calc(var(--sw) * .15) calc(var(--sw) * .045) 0;border-radius:calc(var(--sw) * .135);background:var(--ebony-bg);flex-direction:column;display:flex;position:relative;overflow:hidden}.ko-ai-island{top:calc(var(--sw) * .03);left:calc(50% - var(--sw) * .155);width:calc(var(--sw) * .31);height:calc(var(--sw) * .09);background:#000;border-radius:999px;position:absolute}.ko-ai-crop{flex:none}.ko-ai-crop .ko-sheet{border-radius:calc(var(--sw) * .04);border-block:0;padding-top:4%;overflow:hidden}.ko-ai-crop .ko-sheet-band{gap:4px 16px;padding:4px 4.75% 7px;font-size:11px}.ko-ai-crop .ko-pin{width:20px;height:20px;font-size:11px}.ko-ai-card{margin-top:calc(var(--sw) * .03);padding:calc(var(--sw) * .04);border-radius:calc(var(--sw) * .05);background:var(--ebony-surface);color:var(--ebony-text-primary);flex-direction:column;flex:none;gap:.6em;line-height:1.38;display:flex}.ko-ai-card .ko-pin-inline{width:1.5em;height:1.5em;margin-top:.05em;font-size:.75em}.ko-ai-chip{background:var(--ebony-surface-hi);letter-spacing:.02em;min-height:2em;color:var(--ebony-text-secondary);white-space:nowrap;border-radius:999px;align-items:center;padding:0 .75em;font-size:.75em;font-weight:600;display:inline-flex}.ko-ai-chip .ko-ai-swap{justify-items:center}.ko-ai-lang{background:var(--ebony-surface-hi);min-height:2em;color:var(--ebony-text-primary);white-space:nowrap;border-radius:.5em;flex:none;align-items:center;gap:.3em;padding:0 .6em;font-size:.75em;font-weight:600;line-height:1;display:inline-flex}.ko-ai-lang svg{fill:none;width:.7em;height:1.12em;stroke:var(--ebony-text-secondary);stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round;flex:none}.ko-ai-card .label{font-size:.6875em}.ko-ai-card .ko-ai-eyebrow{text-wrap:balance;margin-bottom:.6em;font-size:max(.6875em,10px)}.ko-ai-quote{border-left:2px solid var(--ebony-text-secondary);font-family:var(--font-serif);color:var(--ebony-text-secondary);text-wrap:pretty;padding-left:.85em;font-size:1.05em;font-style:italic;line-height:1.3}.ko-ai-swap{display:grid}.ko-ai-swap>*{grid-area:1/1}.ko-ai-instruction{font-weight:600;line-height:1.35}.ko-ai-steps{color:var(--ebony-text-secondary);flex-direction:column;gap:.5em;margin:0;padding:0;font-size:.9375em;list-style:none;display:flex}@container ai-stage (height<=480px){.ko-ai-steps{display:none}}.ko-ai-steps li{align-items:flex-start;gap:.6em;display:flex}.ko-ai-num{background:var(--ebony-surface-hi);width:1.5em;height:1.5em;color:var(--ebony-text-secondary);border-radius:999px;flex:none;place-items:center;margin-top:.05em;font-size:.75em;font-weight:600;display:grid}.ko-ai-listen{min-height:2.4em;box-shadow:inset 0 0 0 1px var(--ebony-hairline-strong);color:var(--ebony-text-primary);border-radius:999px;align-self:flex-start;align-items:center;gap:.5em;margin-top:.2em;padding:0 1em 0 .85em;font-size:.8125em;font-weight:500;display:inline-flex}.ko-ai-listen svg{width:1.1em;height:1.1em}.ko-ai [data-ai-first],.ko-ai [data-ai-mid],.ko-ai [data-ai-body=zh],.ko-ai .ko-ai-rail,.ko-ai[data-ai-rest=zh] [data-ai-body=en]{opacity:0}.ko-ai[data-ai-rest=zh] [data-ai-body=zh]{opacity:1}.ko-ai[data-ai-rest=en] [data-ai-body=zh],.ko-ai[data-ai-rest=zh] [data-ai-body=en]{display:none}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-step{display:block}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .section-sticky,.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-rail{display:none}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-captions{display:block}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-captions>*{opacity:1}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-captions>*+*{border-top:1px solid var(--ebony-hairline);margin-top:2rem;padding-top:2rem}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-caption-box{align-self:start;padding-top:.5rem}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-canvas{top:calc(var(--ko-chrome) + 1.125rem);align-self:start;position:sticky}@media (width<64rem){.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-frame{height:auto;max-height:none}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-canvas{flex:none;align-self:stretch;height:clamp(480px,80svh,40rem);margin-bottom:1.5rem;position:relative;top:auto}}.js .ko-ai:not(.ko-ai-flow) .ko-ai-step{display:none}@media (prefers-reduced-motion:no-preference){.js .ko-ai:not(.ko-ai-flow) .ko-ai-stage{--ai-head:65}.js .ko-ai:not(.ko-ai-flow) [data-ai-first],.js .ko-ai:not(.ko-ai-flow) .ko-ai-rail,.js .ko-ai:not(.ko-ai-flow) .ko-ai-rail li:first-child{opacity:1}.js .ko-ai:not(.ko-ai-flow) [data-ai-final],.js .ko-ai:not(.ko-ai-flow) [data-ai-part],.js .ko-ai:not(.ko-ai-flow) [data-tint],.js .ko-ai:not(.ko-ai-flow) [data-pin],.js .ko-ai:not(.ko-ai-flow) .ko-ai-mark,.js .ko-ai:not(.ko-ai-flow) .ko-ai-lane>span{opacity:0}@media (width<64rem){.js .ko-ai:not(.ko-ai-flow) .ko-ai-track{height:400svh}.js .ko-ai:not(.ko-ai-flow)[data-ai-motion=play] .ko-ai-track{height:220svh}.js .ko-ai:not(.ko-ai-flow) .ko-ai-frame{top:calc(var(--ko-chrome) + 1.125rem);position:sticky}.js .ko-ai:not(.ko-ai-flow) .ko-ai-header{margin-bottom:calc(var(--ko-chrome) + 1.5rem)}}}.js .ko-ai.ko-ai-flow [data-pin=crop-1]{opacity:1}.ko-ai-transport-row{margin-top:1.5rem}.ko-ai-transport{min-height:2.75rem;color:var(--color-fg);box-shadow:inset 0 0 0 1px var(--color-line-strong);cursor:pointer;border-radius:9999px;align-items:center;gap:.5rem;padding:.4rem 1.2rem .4rem 1rem;font-size:.9375rem;font-weight:600;line-height:1.25;transition:box-shadow .3s;display:inline-flex;position:relative}.ko-ai-transport:hover{box-shadow:inset 0 0 0 1px var(--color-fg-3)}.ko-ai-transport svg{flex:none;width:1rem;height:1rem}html:not(.js) .ko-ai-transport-row,.ko-ai-flow .ko-ai-transport-row{display:none}@media (width<64rem){.ko-ai-caption-box{grid-template-columns:minmax(0,17rem) 44px;grid-template-areas:"chapters transport""captions captions";justify-content:start;column-gap:12px;display:grid}.ko-ai-caption-box>.ko-ai-rail{grid-area:chapters}.ko-ai-captions{grid-area:captions}.ko-ai-transport-row{grid-area:transport;align-self:start;margin-top:0}.ko-ai-transport{justify-content:center;width:44px;height:44px;min-height:44px;padding:0}.ko-ai-transport-label{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}}@media (width>=64rem){.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-grid{grid-template-rows:auto 1fr}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-header{grid-row:1;align-self:start}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-caption-box{grid-row:2;align-self:start;margin-top:2rem}.ko-ai:is(.ko-ai-flow,html:not(.js) *) .ko-ai-canvas{grid-row:1/span 2}}@media (width>=64rem) and (orientation:portrait){.ko-ai-grid{padding-top:calc(var(--ko-chrome) + 1.625rem);grid-template-rows:0 auto auto 1fr}.ko-ai-canvas{aspect-ratio:5/6;align-self:start;height:auto;max-height:calc(100svh - 7.5rem)}}@media (width>=64rem) and (orientation:portrait) and (prefers-reduced-motion:no-preference){.js .ko-ai:not(.ko-ai-flow) .ko-ai-grid{grid-template-rows:auto minmax(0,1fr);height:100svh}.js .ko-ai:not(.ko-ai-flow) .ko-ai-header{grid-area:1/1/auto/span 6;align-self:start}.js .ko-ai:not(.ko-ai-flow) .ko-ai-caption-box{grid-area:1/7/auto/-1;align-self:start;margin-top:0}.js .ko-ai:not(.ko-ai-flow) .ko-ai-canvas{aspect-ratio:auto;grid-area:2/1/auto/-1;align-self:stretch;height:auto;max-height:none;margin-top:clamp(1.5rem,3svh,2.5rem)}}@media (40rem<=width<64rem) and (orientation:portrait) and (prefers-reduced-motion:no-preference){.js .ko-ai:not(.ko-ai-flow) .ko-ai-frame{max-height:none}.js .ko-ai:not(.ko-ai-flow) .ko-ai-stage{--ai-rib:40cqh}.js .ko-ai:not(.ko-ai-flow) .ko-ai-ribbon{--ai-ribbon:var(--ai-rib)}.js .ko-ai:not(.ko-ai-flow) .ko-ai-head{top:calc(50cqh - var(--ai-rib) / 2 - 8px);height:calc(var(--ai-rib) + 16px)}.js .ko-ai:not(.ko-ai-flow) .ko-ai-meta{bottom:calc(50cqh + var(--ai-rib) / 2 + 14px)}.js .ko-ai:not(.ko-ai-flow) .ko-ai-minutes{top:calc(50cqh + var(--ai-rib) / 2 + 10px)}}.ko-sub{--settle:cubic-bezier(.16, 1, .3, 1);max-width:34rem;position:relative}.ko-count{container:ko-count/inline-size}.ko-count-label{margin:0 0 1rem}html:not(.js) :is(.ko-count-cells,.ko-sub-stage,.ko-sub-small){display:none}.ko-count-cells{border-block:1px solid var(--ebony-hairline);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.ko-count-cell{border-left:1px solid var(--ebony-hairline);flex-direction:column;gap:.625rem;min-width:0;padding:1.125rem 0 1rem clamp(.625rem,4cqi,1.25rem);display:flex}.ko-count-cell:first-child{border-left:0;padding-left:0}.ko-count-num{font-family:var(--font-serif);font-size:min(var(--ko-type-2), 14cqi);font-optical-sizing:auto;font-variant-numeric:tabular-nums lining-nums;letter-spacing:-.02em;white-space:nowrap;color:var(--ebony-text-primary);font-weight:500;line-height:1}[data-countdown=pending] .ko-count-num{visibility:hidden}.ko-count-unit{letter-spacing:.1em;text-transform:uppercase;white-space:nowrap;color:var(--ebony-text-tertiary);font-size:.6875rem;font-weight:600;line-height:1.2}:lang(zh-Hans) .ko-count-unit{letter-spacing:.16em;font-size:.75rem}@container ko-count (width<19rem){.ko-count-cells{grid-template-columns:repeat(2,minmax(0,1fr))}.ko-count-cell:nth-child(3){border-left:0;padding-left:0}.ko-count-cell:nth-child(n+3){border-top:1px solid var(--ebony-hairline)}.ko-count-num{font-size:min(var(--ko-type-2), 26cqi)}}@container ko-count (width<12rem){.ko-count-unit{letter-spacing:.02em;text-transform:none}}.ko-count-launched{border-block:1px solid var(--ebony-hairline);font-family:var(--font-serif);font-size:var(--ko-type-3);letter-spacing:-.015em;text-wrap:balance;color:var(--ebony-text-primary);margin:0;padding-block:1rem;font-weight:500;line-height:1.15}.ko-sub-body{text-wrap:pretty;max-width:40ch;color:var(--ebony-text-secondary);margin:1.5rem 0 0;font-size:1.0625rem;line-height:1.5}.ko-sub-noscript{max-width:40ch;color:var(--ebony-text-primary);margin:1rem 0 0;font-size:1.0625rem;line-height:1.5}.ko-sub-noscript a{color:inherit;text-decoration:underline;-webkit-text-decoration-color:var(--ebony-hairline-strong);text-decoration-color:var(--ebony-hairline-strong);text-underline-offset:4px;overflow-wrap:anywhere}.ko-sub-stage{margin-top:1.75rem;display:grid;container:ko-sub/inline-size}.ko-sub-stage>*{grid-area:1/1;min-width:0}.ko-sub-row{gap:.75rem;display:flex}.ko-sub-field{border:1px solid var(--ebony-hairline-strong);background:var(--ebony-surface);min-width:0;min-height:3rem;color:var(--ebony-text-primary);transition:border-color .3s var(--settle);border-radius:9999px;flex:auto;padding-inline:1.25rem;font-size:1rem}.ko-sub-field::placeholder{color:var(--ebony-text-tertiary);opacity:1}.ko-sub-field:focus-visible{outline:2px solid var(--ebony-text-primary);outline-offset:2px}.ko-sub-field[aria-invalid=true]{border-width:2px;border-color:var(--ebony-text-secondary)}.ko-sub-button{background:var(--ebony-text-primary);max-width:100%;min-height:3rem;color:var(--ebony-bg);cursor:pointer;transition:opacity .3s var(--settle);border-radius:9999px;flex:none;justify-content:center;align-items:center;gap:.5rem;padding-inline:1.5rem;font-size:1rem;font-weight:600;line-height:1.2;display:inline-flex}.ko-sub-button:hover{opacity:.9}.ko-sub-mark{place-items:center;width:1.1em;height:1.1em;display:inline-grid}.ko-sub-mark>*{transition:opacity .2s var(--settle);grid-area:1/1}.ko-sub-spinner{opacity:0;border:2px solid;border-right-color:#0000;border-radius:9999px;width:.85em;height:.85em}[data-subscribe=sending] .ko-sub-button{cursor:progress}[data-subscribe=sending] .ko-sub-arrow{opacity:0}[data-subscribe=sending] .ko-sub-spinner{opacity:1;animation:.8s linear infinite ko-sub-spin}@keyframes ko-sub-spin{to{transform:rotate(1turn)}}.ko-sub-error{text-wrap:pretty;min-height:1.5em;color:var(--ebony-text-primary);margin:.625rem 0 0;padding-left:1.25rem;font-size:.9375rem;line-height:1.5}@container ko-sub (width<23rem){.ko-sub-row{flex-direction:column}.ko-sub-button{width:100%;padding-inline:12px}.ko-sub-field{padding-inline:1rem}.ko-sub-error{padding-left:1rem}}.ko-sub-trap{width:1px;height:1px;position:absolute;left:-10000px;overflow:hidden}.ko-sub-done{opacity:0;visibility:hidden;transition:opacity .55s var(--settle), visibility 0s .55s;align-self:start}.ko-sub-done:focus-visible{outline:none}[data-subscribe=done] .ko-sub-done{opacity:1;visibility:visible;transition:opacity .55s var(--settle) .15s, visibility 0s}.ko-sub-form{transition:opacity .3s var(--settle), visibility 0s}[data-subscribe=done] .ko-sub-form{opacity:0;visibility:hidden;transition:opacity .3s var(--settle), visibility 0s .3s}.ko-sub-done-title{font-family:var(--font-serif);font-size:var(--ko-type-sub);letter-spacing:-.01em;color:var(--ebony-text-primary);margin:0;font-weight:500;line-height:1.2}.ko-sub-done-body{text-wrap:pretty;color:var(--ebony-text-secondary);margin:.5rem 0 0;font-size:1.0625rem;line-height:1.5}.ko-sub-small{color:var(--ebony-text-secondary);margin:.25rem 0 0;font-size:.875rem;line-height:1.5}.ko-sub-privacy{white-space:nowrap;color:var(--ebony-text-secondary);text-decoration:underline;-webkit-text-decoration-color:var(--ebony-hairline-strong);text-decoration-color:var(--ebony-hairline-strong);text-underline-offset:4px;transition:color .3s var(--settle)}.ko-sub-privacy:hover{color:var(--ebony-text-primary)}@media (prefers-reduced-motion:reduce){.ko-sub *,.ko-sub-stage>*{transition:none!important}[data-subscribe=sending] .ko-sub-spinner{opacity:.5;border-right-color:currentColor;animation:none}}.ko-close{--settle:cubic-bezier(.16, 1, .3, 1)}.ko-close :is(#join,#for-families){scroll-margin-top:calc(var(--ko-chrome) + 1.5rem)}.ko-close :is(#for-teachers,#for-students){scroll-margin-top:calc(var(--ko-chrome) + 1.5rem + var(--door-aim,0px))}.ko-close #dive-deeper{scroll-margin-top:calc(var(--ko-chrome) + 1.5rem)}.ko-close-part{padding-block:clamp(4rem,8vw,6.5rem)}.ko-close-part+.ko-close-part{padding-top:0}.ko-close-part:first-child{padding-top:max(clamp(4rem, 8vw, 6.5rem), calc(var(--ko-chrome) + 2rem))}@media screen and (prefers-reduced-motion:no-preference){.js .ko-close [data-reveal]{opacity:0}}@media print{.ko-close [data-reveal]{opacity:1!important;transform:none!important}}.ko-doors{grid-template-columns:minmax(0,1fr);margin-top:clamp(3rem,5vw,4.5rem);display:grid}@media (width>=48rem){.ko-doors{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:clamp(2rem,4vw,4rem)}}.ko-door{border-top:1px solid var(--color-line-strong);box-shadow:inset 0 0 0 0 var(--color-fg);transition:border-color .55s var(--settle), box-shadow .55s var(--settle);flex-direction:column;align-items:flex-start;padding-block:clamp(1.5rem,2.4vw,2rem) clamp(2rem,3vw,2.5rem);display:flex}.ko-door[data-marked]{border-top-color:var(--color-fg);box-shadow:inset 0 1px 0 0 var(--color-fg)}.ko-door-title{font-family:var(--font-serif);font-weight:500;font-size:var(--ko-type-3);letter-spacing:-.015em;text-wrap:balance;color:var(--color-fg);line-height:1.1}:lang(zh-Hans) .ko-door-title{font-size:calc(var(--ko-type-3) * .9);letter-spacing:.02em;line-height:1.25}.ko-door-line{max-width:26ch;font-family:var(--font-serif);font-size:var(--ko-type-sub);color:var(--color-fg-2);text-wrap:pretty;margin-top:.875rem;line-height:1.35}:lang(zh-Hans) .ko-door-line{max-width:20em;line-height:1.55}:lang(zh-Hans) .ko-door-phrase{display:inline-block}.ko-door-link{color:var(--color-fg);text-decoration:underline;-webkit-text-decoration-color:var(--color-line-strong);text-decoration-color:var(--color-line-strong);text-underline-offset:.3em;transition:text-decoration-color .3s var(--settle);margin-top:auto;padding-top:1.5rem;font-size:1rem;font-weight:600;line-height:1.4}.ko-door-link:hover{-webkit-text-decoration-color:var(--color-fg);text-decoration-color:var(--color-fg)}@media (prefers-reduced-motion:reduce){.ko-door{transition:none}}.ko-guardian{color:var(--ivory-text-primary);border:1px solid var(--ivory-hairline-strong);padding:clamp(min(1.75rem,6vw),4.5vw,4rem)}.ko-guardian-label{letter-spacing:.1em;text-transform:uppercase;color:var(--ivory-text-secondary);font-size:.75rem;font-weight:600}:lang(zh-Hans) .ko-guardian-label{letter-spacing:.16em}.ko-guardian-cells{border-top:1px solid var(--ivory-hairline-strong);grid-template-columns:minmax(0,1fr);margin-top:clamp(2.25rem,4vw,3.5rem);display:grid}.ko-guardian-cell{border-bottom:1px solid var(--ivory-hairline);padding-block:1.5rem 1.75rem}.ko-guardian-cell-title{font-family:var(--font-serif);color:var(--ivory-text-primary);font-size:1.3125rem;font-weight:600;line-height:1.25}.ko-guardian-cell-body{max-width:46ch;color:var(--ivory-text-secondary);text-wrap:pretty;margin-top:.6rem;font-size:1rem;line-height:1.55}@media (width>=48rem) and (width<64rem){.ko-guardian-cells{grid-template-columns:repeat(2,minmax(0,1fr))}.ko-guardian-cell{padding-block:1.75rem 2rem}.ko-guardian-cell:nth-child(odd){padding-inline-end:clamp(1.5rem,3vw,3rem)}.ko-guardian-cell:nth-child(2n){border-inline-start:1px solid var(--ivory-hairline);padding-inline-start:clamp(1.5rem,3vw,3rem)}.ko-guardian-cell:last-child:nth-child(odd){grid-column:1/-1}}@media (width>=64rem){.ko-guardian-cells{grid-template-columns:repeat(3,minmax(0,1fr))}.ko-guardian-cell{border-inline-start:1px solid var(--ivory-hairline);padding-block:1.75rem 2rem;padding-inline:clamp(1.25rem,2.2vw,2.25rem)}.ko-guardian-cell:first-child{border-inline-start:0;padding-inline-start:0}.ko-guardian-cell:last-child{padding-inline-end:0}}.ko-guardian-strip{margin-top:clamp(2.25rem,4vw,3.25rem)}.ko-guardian-steps{grid-template-columns:minmax(0,1fr);gap:1.25rem;margin-top:1.25rem;display:grid}.ko-guardian-steps li{color:var(--ivory-text-secondary);text-wrap:pretty;align-items:baseline;gap:.875rem;font-size:1rem;line-height:1.5;display:flex}.ko-guardian-step-n{width:1.5rem;height:1.5rem;box-shadow:inset 0 0 0 1px var(--ivory-hairline-strong);font-variant-numeric:tabular-nums;color:var(--ivory-text-primary);border-radius:9999px;flex:none;align-self:flex-start;place-items:center;font-size:.75rem;font-weight:600;display:grid;translate:0 .3rem}.ko-guardian-step-title{color:var(--ivory-text-primary);font-weight:600}@media (width>=48rem){.ko-guardian-steps{border-top:1px solid var(--ivory-hairline);grid-template-columns:repeat(3,minmax(0,1fr));gap:0}.ko-guardian-steps li{padding-top:1.25rem;padding-inline-end:1.5rem}}.ko-guardian-note{color:var(--ivory-text-secondary);margin-top:1.5rem;font-size:.9375rem;line-height:1.5}.ko-guardian-links{border-top:1px solid var(--ivory-hairline-strong);flex-wrap:wrap;gap:.75rem 2.5rem;margin-top:clamp(2rem,3.5vw,2.75rem);padding-top:1.5rem;font-size:1rem;font-weight:600;display:flex}.ko-guardian-links a{color:var(--ivory-text-primary);text-decoration:underline;-webkit-text-decoration-color:var(--ivory-hairline-strong);text-decoration-color:var(--ivory-hairline-strong);text-underline-offset:.3em;transition:text-decoration-color .3s var(--settle)}.ko-guardian-links a:hover{-webkit-text-decoration-color:var(--ivory-text-primary);text-decoration-color:var(--ivory-text-primary)}.ko-ledger{border-bottom:1px solid var(--ebony-hairline);container-type:inline-size}.ko-ledger-row{border-top:1px solid var(--ebony-hairline);grid-template-columns:4rem minmax(0,1fr);align-items:baseline;gap:.2rem 1rem;padding-block:1.1rem;display:grid}.ko-ledger-row:last-child{border-top-color:var(--ebony-hairline-strong)}.ko-ledger-year{font-variant-numeric:tabular-nums;color:var(--ebony-text-tertiary);font-size:.9375rem}.ko-ledger-body{font-family:var(--font-serif);color:var(--ebony-text-primary);font-size:clamp(1.25rem,1.6vw,1.5rem);font-weight:500;line-height:1.25}.ko-ledger-distinction{color:var(--ebony-text-secondary);grid-column:2;font-size:.9375rem;line-height:1.45}@media (width<20rem){.ko-ledger-row{grid-template-columns:minmax(0,1fr)}.ko-ledger-distinction{grid-column:1}}@media (width>=768px){.ko-ledger-row{grid-template-columns:5rem minmax(0,1fr) minmax(0,1fr)}.ko-ledger-distinction{grid-column:3}}@container (width<20rem){.ko-ledger-row{grid-template-columns:minmax(0,1fr)}.ko-ledger-distinction{grid-column:1}}.ko-close-part:has(+.ko-deeper){padding-bottom:clamp(2.5rem,4vw,3.5rem)}.ko-close-part.ko-deeper{padding-bottom:0}.ko-deeper-link{border-block:1px solid var(--color-line);color:var(--color-fg);flex-wrap:wrap;align-items:baseline;gap:.35rem 1.25rem;padding-block:1.1rem;display:flex}.ko-deeper-title{font-family:var(--font-serif);font-size:clamp(1.25rem,1.6vw,1.5rem);font-weight:500;line-height:1.25}.ko-deeper-arrow{transition:translate .3s var(--settle);display:inline-block}.ko-deeper-link:hover .ko-deeper-arrow{translate:.25rem}.ko-deeper-line{color:var(--color-fg-2);text-wrap:pretty;font-size:.9375rem;line-height:1.45}.ko-close-part.ko-join{text-align:center;flex-direction:column;align-items:center;margin-top:clamp(3rem,6vw,5rem);padding-block:clamp(2.5rem,5vw,4rem) clamp(4.5rem,9vw,7.5rem);display:flex}.ko-join-mark img{width:48px;height:44px;display:block}.ko-join-title{margin-top:clamp(1.5rem,2.5vw,2rem)}.ko-join-act{width:min(100%,34rem);margin-top:clamp(2rem,3.5vw,2.75rem)}.ko-join .ko-sub{margin-inline:auto}.ko-join :is(.ko-count-label,.ko-sub-body,.ko-sub-noscript,.ko-sub-small){text-align:center;margin-inline:auto}.ko-join .ko-sub-stage{text-align:left}.ko-join .ko-sub-error{text-align:center;padding-left:0}.ko-join .ko-sub-small{margin-top:.75rem}.ko-join .ko-sub-done{text-align:center}.ko-join .ko-count-cell,.ko-join .ko-count-cell:first-child{align-items:center;padding-inline:.25rem}.ko-join-status{color:var(--color-fg-3);margin:1.75rem 0 0;font-size:.875rem;line-height:1.5}:lang(zh-Hans) .ko-door-link .ko-door-phrase{-webkit-text-decoration:inherit;text-decoration:inherit}.ko-hero{position:relative;overflow-x:clip}.ko-hero :focus-visible{outline-color:var(--ebony-text-primary)}.ko-hero-grid{max-width:1320px;padding:calc(var(--ko-chrome) + 1.25rem) max(5vw, 1.5rem) 3rem;grid-template-columns:minmax(0,1fr);row-gap:2.25rem;margin-inline:auto;display:grid}.ko-hero-label{margin-bottom:1.5rem;display:none}@media (width>=1024px){.ko-hero-label{display:block}}.ko-hero-deck{max-width:24ch;font-family:var(--font-serif);font-size:var(--ko-type-sub);color:var(--ebony-text-secondary);text-wrap:balance;margin-top:1.25rem;line-height:1.3}.ko-hero-cta{flex-wrap:wrap;align-items:center;gap:.75rem 1.25rem;margin-top:2rem;display:flex}.ko-hero-small{color:var(--ebony-text-tertiary);font-size:.875rem}.ko-hero-status{margin-top:1.25rem}.ko-hero-doors{border-top:1px solid var(--ebony-hairline);flex-wrap:wrap;gap:.5rem 1.75rem;margin-top:2.25rem;padding-top:1.25rem;font-size:.9375rem;display:flex}.ko-hero-doors a{color:var(--ebony-text-secondary);transition:color .3s}.ko-hero-doors a:hover{color:var(--ebony-text-primary)}.ko-hero-figure{width:100%}.ko-field{--bl:max(5vw, 1.5rem);--br:max(5vw, 1.5rem);--fh:clamp(240px, 34svh, 288px);padding-top:var(--fh);position:relative}.ko-field-stage{top:0;right:calc(-1 * var(--br));left:calc(-1 * var(--bl));height:var(--fh);pointer-events:none;position:absolute}.ko-field-leader{background:color-mix(in srgb, var(--ebony-text-primary) 36%, transparent);transform-origin:50% 0;opacity:0;pointer-events:none;width:1px;height:0;margin-left:-.5px;position:absolute;top:0;left:0;transform:scaleY(0)}.ko-field-card{border:1px solid var(--ebony-hairline);background:var(--ebony-surface);opacity:0;visibility:hidden;pointer-events:none;border-radius:.55em;width:max-content;max-width:min(13em,100%);margin-top:.75rem;padding:.6em .85em .7em;font-size:calc(.25rem + 9.5px + .1vw);position:relative}.ko-field-card[data-live]{pointer-events:auto}.ko-field-card .label{margin-bottom:.4em;font-size:max(.6875em,10px);line-height:1.2}.ko-field-lines{color:var(--ebony-text-secondary);text-wrap:balance;line-height:1.32;display:grid}.ko-field-lines:lang(zh-Hans){word-break:keep-all}.ko-field-lines>span{visibility:hidden;grid-area:1/1}.ko-field-card[data-note="0"] [data-line="0"],.ko-field-card[data-note="1"] [data-line="1"],.ko-field-card[data-note="2"] [data-line="2"],.ko-field-card[data-note="3"] [data-line="3"]{visibility:inherit}html:not(.js) :is(.ko-field-card,.ko-field-leader){display:none}.ko-field-canvas,.ko-field-poster{width:100%;height:100%;display:block;position:absolute;inset:0}.ko-field-poster{object-fit:contain}@media (width>=480px){.ko-field-poster{object-fit:none}}@media (width>=1024px) and (aspect-ratio>=4/5){.ko-hero-grid{min-height:100dvh;padding-top:calc(var(--ko-chrome) + .5rem);grid-template-columns:repeat(12,minmax(0,1fr));align-items:center;column-gap:1.5rem;padding-bottom:1.5rem}.ko-hero-text{grid-column:span 7}.ko-hero-figure{grid-column:span 5}.ko-field{--bl:96px;--br:calc(max(5vw, 1.5rem) + max(0px, (100vw - 1320px) / 2));--fh:min(416px, 56svh);height:var(--fh);padding-top:0}.ko-field-card{margin-top:0;position:absolute;top:0;left:0}.ko-field-poster{object-fit:contain}}@media (width>=1024px) and (aspect-ratio>=4/5) and (height<=800px){.ko-hero-grid{padding-bottom:.5rem}}.ko-conductor{align-items:center;width:100%;height:100%;display:grid}.ko-conductor .ko-twin-card{--pict:22px}.ko-next{--settle:cubic-bezier(.16, 1, .3, 1)}@media screen and (prefers-reduced-motion:no-preference){.js .ko-next [data-reveal]{opacity:0}}@media print{.ko-next [data-reveal]{opacity:1!important;transform:none!important}}.ko-next-inner{padding-block:max(clamp(4rem, 7vw, 6.5rem), calc(var(--ko-chrome) + 2rem)) clamp(4rem, 7vw, 6.5rem)}.ko-next-head{grid-template-columns:minmax(0,1fr);row-gap:1rem;display:grid}.ko-next-tagline{max-width:24ch}.ko-next-name:lang(zh-Hans),.ko-next-tagline:lang(zh-Hans){word-break:keep-all;overflow-wrap:anywhere}.ko-next-groups{grid-template-columns:minmax(0,1fr);row-gap:3rem;margin-top:clamp(3rem,5vw,4.5rem);display:grid;container-type:inline-size}.ko-next-group{min-width:0;scroll-margin-top:calc(var(--ko-chrome) + 1.5rem);flex-direction:column;row-gap:1rem;display:flex}.ko-next-chapter{border-top:1px solid var(--color-line-strong);padding-top:.75rem}.ko-next .ko-next-chapter a{color:var(--color-fg-2);transition:color .3s var(--settle);text-decoration:none}.ko-next .ko-next-chapter a:hover{color:var(--color-fg)}.ko-next-cards{flex:1;grid-template-columns:minmax(0,1fr);gap:1.5rem;display:grid}.ko-next-card{border:1px solid var(--color-line);min-width:0;transition:border-color .3s var(--settle);flex-direction:column;padding:min(1.5rem,6vw);display:flex;position:relative}.ko-next-card:hover{border-color:var(--color-line-strong)}.ko-next-card:has(.ko-next-link:focus-visible){outline:2px solid var(--color-fg);outline-offset:3px}.ko-next-art{aspect-ratio:4/3;align-content:center;width:100%;min-width:0;max-width:560px;margin-bottom:1.5rem;display:grid}.ko-next-text{flex-direction:column;flex:1;align-items:flex-start;display:flex;container-type:inline-size}.ko-next-title{font-family:var(--font-serif);font-size:var(--ko-type-3);letter-spacing:-.015em;text-wrap:pretty;overflow-wrap:break-word;font-weight:500;line-height:1.1}.ko-next-title:lang(zh-Hans){font-size:min(calc(var(--ko-type-3) * .9), calc(100cqi / 9.2));letter-spacing:.02em;word-break:keep-all;overflow-wrap:anywhere}.ko-next-body{color:var(--color-fg-2);text-wrap:pretty;margin-top:.5rem;font-size:1rem;line-height:1.5}.ko-next-link{color:var(--color-fg);margin-top:auto;padding-top:1.25rem;font-size:.9375rem;font-weight:600;text-decoration:none}.ko-next-link:after{content:"";position:absolute;inset:0}.ko-next-link:focus-visible{outline:none}.ko-next-arrow{transition:translate .3s var(--settle);display:inline-block}.ko-next-card:hover .ko-next-link .ko-next-arrow,.ko-next-chapter a:hover .ko-next-arrow{translate:.25rem}@container (width>=36rem){.ko-next-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.ko-next-group-reading .ko-next-cards{grid-template-columns:minmax(0,1fr)}.ko-next-group-reading{width:calc(50% - .75rem)}}@media (width>=64rem){.ko-next-head{grid-template-columns:repeat(12,minmax(0,1fr));align-items:end;column-gap:1.5rem}.ko-next-name{grid-column:1/span 7}.ko-next-tagline{grid-column:9/span 4;padding-bottom:.35em}.ko-next-groups{grid-template-columns:repeat(12,minmax(0,1fr));column-gap:1.5rem}.ko-next-group-hearing{grid-column:span 8}.ko-next-group-reading{grid-column:span 4;width:auto}.ko-next-art{aspect-ratio:auto;max-width:none;height:clamp(13rem,17.4vw,16rem)}}.ko-next-follow{width:100%;padding-bottom:8px;position:relative;container-type:inline-size}.ko-next-follow-plate{grid-template-rows:minmax(calc(100cqw / var(--window) + 2px), 1fr) auto;min-width:0;min-height:calc(66.6667cqw - 8px);margin:0;display:grid}.ko-next-follow-window{background:var(--ebony-paper);border-block:1px solid var(--ebony-paper-hairline);align-content:center;display:grid;overflow:hidden}.ko-next-follow-view{aspect-ratio:var(--window);position:relative;overflow:hidden}.ko-next-follow-hits{width:100%;height:100%;position:absolute;inset:0}.ko-next-follow-stack{will-change:transform;position:relative}.ko-next-follow-slot{aspect-ratio:var(--slot)}.ko-next-follow-slot>.ko-score{height:100%}.ko-next-follow-cursor{pointer-events:none;will-change:transform;background:#7c5cff33;border-radius:9999px;place-items:center;display:grid;position:absolute;top:0;left:0}.ko-next-follow-cursor>span{background:#7c5cfff2;border-radius:9999px}.ko-next-follow-band{min-height:44px;font-family:var(--font-sans);color:var(--color-fg-2);align-content:center;row-gap:.2rem;margin-top:8px;padding-inline-end:56px;font-size:.6875rem;line-height:1.3;display:grid}.ko-next-orchestra{position:relative}.ko-next-conductor{width:100%}.ko-next .ko-twin{--line:var(--color-fg-3);--mark:var(--color-fg)}.ko-next-transport{z-index:1;width:44px;height:44px;box-shadow:inset 0 0 0 1px var(--color-line-strong);background:var(--color-ground);color:var(--color-fg);border-radius:9999px;place-items:center;display:grid;position:absolute;bottom:8px;right:8px}.ko-next-transport svg{width:12px;height:12px}.ko-next-reading-art{min-width:0}.ko-next-layers{padding:2% 0 1%;display:grid}.ko-next-layers>*{grid-area:1/1;align-self:start;position:relative}.ko-next-copy{justify-self:start;width:86%;transform:translate(-1%,-2%)rotate(-3deg)}.ko-next-copy .ko-sheet{background:var(--ivory-surface-hi);border-block:0}.ko-next-copy .ko-score{opacity:.5}.ko-next-live{justify-self:end;width:93%;margin-top:5%}.ko-next-marks{opacity:.92;width:100%;height:100%;position:absolute;inset:0;overflow:visible}@media (prefers-reduced-motion:no-preference){.js .ko-next-marks:not([data-pen]){visibility:hidden}}.ko-next-tick{fill:none;width:14px;height:14px;stroke:var(--ebony-roll-ink);stroke-width:1.5px;stroke-dasharray:2.5 2;position:absolute}.ko-next-tick-tl{top:6px;left:6px}.ko-next-tick-tr{top:6px;right:6px;rotate:90deg}.ko-next-tick-br{bottom:6px;right:6px;rotate:180deg}.ko-next-tick-bl{bottom:6px;left:6px;rotate:270deg}.ko-status-spacer{visibility:hidden}