@font-face{font-family:Hero Display;src:url(/~zhecheng/static/fonts/Michroma-Regular.ttf) format("truetype");font-display:swap}@font-face{font-family:Scene Caption;src:url(/~zhecheng/static/fonts/Scene-Regular.woff) format("woff");font-display:swap}._captions_k2azr_13{display:none}@media (max-width: 899px),(pointer: coarse){._captions_k2azr_13{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;position:fixed;inset:0;pointer-events:none;color:#363636;transition:opacity .4s ease;font-family:Scene Caption,sans-serif;font-size:10px;letter-spacing:.06em;line-height:14px}._captions_k2azr_13 span{display:block;text-align:center;transition:opacity .7s ease,filter .7s ease,letter-spacing .7s ease}._captions_k2azr_13[data-loaded] span{animation:_hero-materialize_k2azr_1 1.4s ease backwards}._captions_k2azr_13[data-dissolved] span{opacity:0;filter:blur(6px);letter-spacing:.3em}._monogram_k2azr_52{font-family:"Hero Display",var(--font-inter),sans-serif;font-weight:400;font-size:15px;line-height:20px;letter-spacing:.34em;margin-right:-.34em;color:#0d0d0d}._discipline_k2azr_62{font-family:var(--font-inter),sans-serif;font-weight:500;font-size:8px;line-height:12px;letter-spacing:.42em;margin-right:-.42em;text-transform:uppercase;background:linear-gradient(90deg,#3f68d6,#7a55d6,#5d666b,#c9488a,#b5782a);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.dark ._discipline_k2azr_62{background-image:linear-gradient(90deg,#7fa8ff,#b9a4ff,#f2f5f5,#ffb3d1,#ffd49a);text-shadow:none}.dark ._captions_k2azr_13{color:#bfbdbd;text-shadow:0 1px 2px #0d0d0d}.dark ._monogram_k2azr_52{color:#e0e0e0}}._untie_k2azr_90{--ink: #272c29;--muted: #68716c;--body: #3f4742;--line: #c9cfca;--led-face: #eef1f2;--led-rim: linear-gradient(104deg, #aab2b6, #f6f8f8 48%, #aab2b6);--led-ink: linear-gradient(104deg, #3d4549, #79838a 48%, #3d4549);--led-comet: transparent 0 72%, #9aa3a888 84%, #ffffff 93%, transparent 100%;--led-comet-glow: drop-shadow(0 0 2px #ffffff);--led-bloom: 0 0 14px -2px #ffffffcc, 0 0 22px -6px #aab2b666;--led-halo: 0 0 10px -4px #ffffff99;position:fixed;z-index:2;left:50%;bottom:40px;width:min(460px,calc(100vw - 40px));transform:translate(-50%);display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;color:var(--body);font-size:14px;line-height:1.7;pointer-events:none;transition:opacity .4s ease}.dark ._untie_k2azr_90{--ink: #eceeeb;--muted: #a4aca5;--body: #cdd3cf;--line: #333834;--led-face: #141515;--led-rim: linear-gradient( 104deg, #8e979b 0%, #7fa8ff 26%, #b9a4ff 38%, #f2f5f5 50%, #ffb3d1 62%, #ffd49a 74%, #8e979b 100% );--led-ink: linear-gradient( 104deg, #c9d0d3 0%, #c4d3ff 30%, #ffffff 50%, #ffd6e6 66%, #ffe6c4 78%, #c9d0d3 100% );--led-comet: transparent 0 70%, #7fa8ff66 78%, #b9a4ff 86%, #fff 91%, #ffb3d1 95%, #ffd49a 98%, transparent 100%;--led-comet-glow: drop-shadow(0 0 2px #fff) drop-shadow(0 0 5px #c9b8ff) drop-shadow(0 0 10px #ffb3d1aa);--led-bloom: -14px 0 24px -6px #7fa8ffaa, 0 0 20px -2px #e8e2ff77, 14px 0 24px -6px #ffb3d1aa, 24px 2px 28px -10px #ffd49a88;--led-halo: -10px 0 18px -8px #7fa8ff55, 0 0 14px -6px #e8e2ff44, 10px 0 18px -8px #ffb3d155, 18px 2px 22px -12px #ffd49a44}._explain_k2azr_157{min-height:56px;display:flex;align-items:flex-end}._stage_k2azr_162{animation:_stage-in_k2azr_1 .6s ease both}._stage_k2azr_162 p:not(._stageTitle_k2azr_166){white-space:nowrap;font-size:min(14px,3.5vw)}._stageTitle_k2azr_166{color:var(--ink);font-size:15px;font-weight:500;font-variant-numeric:tabular-nums;margin-bottom:4px}.dark ._stage_k2azr_162{text-shadow:0 0 2px #0d0d0d,0 1px 12px #0d0d0d}._untieButton_k2azr_182{position:relative;background:none;pointer-events:auto;font:inherit;font-size:12px;color:var(--ink);padding:7px 18px;border:1px solid var(--line);border-radius:999px;cursor:pointer;-moz-user-select:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:none;transition:border-color .2s}._untieButton_k2azr_182:hover{border-color:var(--muted)}._untieButton_k2azr_182[data-holding]{border-color:transparent;background:linear-gradient(var(--led-face),var(--led-face)) padding-box,var(--led-rim) border-box;animation:_untie-led-glow_k2azr_1 2.6s ease-out forwards}._untieButton_k2azr_182[data-holding] ._untieLabel_k2azr_211{background:var(--led-ink);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:_untie-led-power_k2azr_1 1.6s ease-out}._untieButton_k2azr_182[data-holding]:after{content:"";position:absolute;inset:-1px;padding:2px;border-radius:inherit;pointer-events:none;background:conic-gradient(from var(--untie-led-angle),var(--led-comet));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;filter:var(--led-comet-glow);animation:_untie-led-run_k2azr_1 1.8s linear infinite}@property --untie-led-angle{syntax: "<angle>"; inherits: false; initial-value: 0deg;}@keyframes _untie-led-run_k2azr_1{0%{--untie-led-angle: 0deg}to{--untie-led-angle: 360deg}}@keyframes _untie-led-power_k2azr_1{0%{filter:saturate(0) brightness(.6)}55%{filter:saturate(1.35) brightness(1.25)}}@keyframes _untie-led-glow_k2azr_1{0%{box-shadow:none}45%{box-shadow:var(--led-bloom)}to{box-shadow:var(--led-halo)}}._untieButton_k2azr_182[aria-disabled]{opacity:0;pointer-events:none}._untieButton_k2azr_182:focus-visible{outline:1px solid var(--ink);outline-offset:3px}@keyframes _hero-materialize_k2azr_1{0%{opacity:0;filter:blur(6px);letter-spacing:.6em}}@keyframes _stage-in_k2azr_1{0%{opacity:0;transform:translateY(6px)}}@media (max-width: 899px),(pointer: coarse){._untie_k2azr_90{bottom:24px;font-size:13px}._stageTitle_k2azr_166{font-size:14px}._explain_k2azr_157{min-height:60px}._untieButton_k2azr_182{padding:11px 20px}}@media (prefers-reduced-motion: reduce){._captions_k2azr_13,._untie_k2azr_90{transition:none}._stage_k2azr_162,._captions_k2azr_13[data-loaded] span,._untieButton_k2azr_182[data-holding],._untieButton_k2azr_182[data-holding] ._untieLabel_k2azr_211{animation:none}._untieButton_k2azr_182[data-holding]{box-shadow:var(--led-halo)}._untieButton_k2azr_182[data-holding]:after{display:none}._captions_k2azr_13 span{transition:none}}