:root{--ink:#f2f3ee;--soft:rgba(242,243,238,.66);--faint:rgba(242,243,238,.35);--acid:#d7ff3f;--black:#050607;--line:rgba(242,243,238,.17);--ease:cubic-bezier(.22,.78,.16,1);--px:0px;--py:0px}
*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden;background:var(--black);color:var(--ink);font-family:Inter,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif}button{font:inherit}button:not(:disabled){cursor:pointer}
.experience,.stage,.stage-video,.blackout,.loader{position:fixed;inset:0}.experience{isolation:isolate;background:var(--black)}.stage{z-index:1;overflow:hidden;background:#0a0b0c}.stage::before,.stage::after{content:"";position:absolute;inset:0;z-index:3;pointer-events:none}.stage::before{background:linear-gradient(90deg,rgba(5,6,7,.86) 0%,rgba(5,6,7,.24) 42%,transparent 72%),linear-gradient(0deg,rgba(5,6,7,.82),transparent 44%,rgba(5,6,7,.18))}.stage::after{background:radial-gradient(circle at 56% 49%,transparent 20%,rgba(5,6,7,.13) 54%,rgba(5,6,7,.86) 112%)}
.stage-video{width:100%;height:100%;object-fit:cover;object-position:54% 50%;opacity:0;transform:scale(1.055) translate3d(var(--px),var(--py),0);filter:saturate(.8) contrast(1.09) brightness(.78);transition:opacity 820ms var(--ease),transform 3600ms cubic-bezier(.14,.72,.16,1),filter 1200ms ease;will-change:opacity,transform}.stage-video.is-active{opacity:1;transform:scale(1) translate3d(var(--px),var(--py),0);filter:saturate(.92) contrast(1.1) brightness(.89)}.stage-video[data-scene="form"]{object-position:57% 53%}.stage-video[data-scene="air"]{object-position:55% 48%}.stage-video[data-scene="thermal"]{object-position:53% 48%}.stage-video[data-scene="io"]{object-position:55% 52%}
.stage-grid{position:absolute;inset:0;z-index:4;opacity:.18;pointer-events:none;background-image:linear-gradient(rgba(215,255,63,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(215,255,63,.035) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(90deg,#000,transparent 60%)}.stage-vignette{position:absolute;inset:0;z-index:4;pointer-events:none;background:repeating-linear-gradient(0deg,transparent 0 3px,rgba(255,255,255,.018) 4px);mix-blend-mode:overlay;opacity:.22}.light-sweep{position:absolute;z-index:4;inset:-20%;pointer-events:none;background:linear-gradient(106deg,transparent 42%,rgba(215,255,63,.065) 49%,transparent 56%);transform:translateX(-54%);animation:sweep 10s ease-in-out infinite}@keyframes sweep{0%,26%{transform:translateX(-54%);opacity:0}43%{opacity:1}64%,100%{transform:translateX(56%);opacity:0}}.blackout{z-index:7;pointer-events:none;opacity:0;background:#020303;transition:opacity 420ms cubic-bezier(.38,0,.2,1)}.blackout.is-on{opacity:1}
.hud{position:fixed;inset:0;z-index:9;pointer-events:none}.brand{position:absolute;top:clamp(22px,3.3vw,50px);left:clamp(22px,4.1vw,72px);display:flex;align-items:center;gap:10px;padding:0;border:0;color:var(--ink);background:transparent;pointer-events:auto;font-size:9px;font-weight:700;letter-spacing:.18em;transition:color .2s ease}.brand:hover,.brand:focus-visible{color:var(--acid);outline:none}.brand-index{font-size:16px;letter-spacing:-.08em}.brand i{width:1px;height:16px;background:var(--acid);transform:skewX(-18deg)}.system-state{position:absolute;top:clamp(26px,3.5vw,53px);right:clamp(24px,4.3vw,75px);display:flex;align-items:center;gap:8px;margin:0;color:var(--soft);font-size:9px;font-weight:700;letter-spacing:.14em}.system-state b{width:6px;height:6px;border-radius:50%;background:var(--acid);box-shadow:0 0 0 4px rgba(215,255,63,.12),0 0 14px var(--acid);animation:pulse 2.2s ease infinite}@keyframes pulse{50%{opacity:.42;transform:scale(.72)}}
.chapter-nav{position:absolute;top:50%;right:clamp(25px,4.2vw,74px);display:grid;gap:4px;transform:translateY(-50%);pointer-events:auto}.chapter{position:relative;display:grid;grid-template-columns:25px 38px auto;align-items:center;gap:8px;padding:3px 0;border:0;color:var(--faint);background:transparent;text-align:left;transition:color .22s ease,transform .22s var(--ease)}.chapter span,.chapter em{font-style:normal;font-size:9px;font-weight:700;letter-spacing:.16em}.chapter i{width:0;height:1px;background:var(--acid);transition:width .25s var(--ease)}.chapter:hover,.chapter:focus-visible{color:var(--ink);outline:none;transform:translateX(-4px)}.chapter.is-current{color:var(--ink)}.chapter.is-current span{color:var(--acid)}.chapter.is-current i{width:28px}
.copy{position:fixed;z-index:6;left:clamp(24px,5.4vw,96px);bottom:clamp(110px,17vh,182px);width:min(610px,calc(100vw - 55px));text-shadow:0 4px 35px rgba(0,0,0,.55);transition:opacity .3s ease,transform .4s var(--ease),filter .3s ease}.copy.is-changing{opacity:0;transform:translateY(14px);filter:blur(4px)}.copy-kicker{display:flex;align-items:center;gap:11px;margin:0 0 18px;color:var(--acid);font-size:10px;font-weight:700;letter-spacing:.19em}.copy-kicker i{width:36px;height:1px;background:currentColor;opacity:.75}h1{max-width:580px;margin:0;font-size:clamp(53px,7.3vw,118px);font-weight:800;line-height:.79;letter-spacing:-.09em;text-wrap:balance}.copy-cn{max-width:430px;margin:27px 0 0;color:var(--ink);font-size:clamp(15px,1.3vw,18px);font-weight:600;line-height:1.5;letter-spacing:.04em}.copy-detail{max-width:445px;margin:13px 0 0;color:var(--soft);font-size:12px;line-height:1.8;letter-spacing:.045em}.copy-mantra{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:20px 0 0;color:var(--acid);font-size:8px;font-weight:800;letter-spacing:.2em}.copy-mantra i{width:16px;height:1px;background:currentColor;opacity:.65}.copy-mantra span{white-space:nowrap}.experience[data-copy-style="outline"] h1{color:transparent;text-shadow:none;-webkit-text-stroke:1px var(--ink);text-stroke:1px var(--ink)}.experience[data-copy-style="outline"] .copy-cn{color:var(--acid)}.experience[data-copy-style="protocol"] h1{font-size:clamp(47px,6.1vw,100px);line-height:.84;letter-spacing:-.07em}.experience[data-copy-style="protocol"] .copy-mantra{padding-top:10px;border-top:1px solid var(--line)}.experience[data-copy-style="editorial"] h1{font-size:clamp(48px,6.5vw,106px);font-weight:600;letter-spacing:-.075em}.experience[data-copy-style="editorial"] .copy-mantra span{padding:5px 7px;background:rgba(215,255,63,.11);border:1px solid rgba(215,255,63,.28)}.experience[data-copy-style="final"] h1{color:var(--acid);font-size:clamp(50px,6.7vw,108px);text-shadow:0 0 40px rgba(215,255,63,.13)}.experience[data-copy-style="final"] .copy-detail{max-width:390px}
.readout{position:fixed;z-index:6;right:clamp(25px,5.2vw,90px);bottom:clamp(112px,16vh,172px);width:min(264px,22vw);padding:16px 0 0;border-top:1px solid var(--line);transition:opacity .3s ease,transform .4s var(--ease)}.readout-top{display:flex;justify-content:space-between;margin:0;color:var(--faint);font-size:8px;font-weight:700;letter-spacing:.16em}.readout-top b{color:var(--acid);font-size:10px}.readout-value{margin-top:15px;color:var(--ink);font-size:clamp(23px,2.3vw,37px);font-weight:750;letter-spacing:-.07em}.readout>p:not(.readout-top){min-height:50px;margin:8px 0 15px;color:var(--soft);font-size:11px;line-height:1.6}.readout-meter{height:2px;overflow:hidden;background:rgba(242,243,238,.16)}.readout-meter i{display:block;width:25%;height:100%;background:var(--acid);box-shadow:0 0 18px rgba(215,255,63,.8);transition:width .75s var(--ease)}
.chapter-marker{position:fixed;z-index:6;bottom:clamp(33px,4.1vw,64px);left:clamp(24px,5.4vw,96px);display:flex;align-items:center;gap:8px;color:var(--soft);font-size:10px;font-weight:700;letter-spacing:.17em}.chapter-marker i{width:54px;height:1px;background:var(--line)}.chapter-marker span:first-child{color:var(--acid)}.scroll-cue{position:fixed;z-index:6;right:clamp(25px,5.2vw,90px);bottom:clamp(39px,4.5vw,67px);display:flex;align-items:center;gap:11px;color:var(--soft);font-size:8px;font-weight:700;font-style:normal;letter-spacing:.16em;transition:opacity .35s ease}.scroll-cue span{width:32px;height:1px;overflow:hidden;background:var(--line)}.scroll-cue span::after{content:"";display:block;width:14px;height:100%;background:var(--acid);animation:scrollline 1.8s ease-in-out infinite}@keyframes scrollline{from{transform:translateX(-17px)}to{transform:translateX(34px)}}.experience[data-station="io"] .scroll-cue{opacity:0}
.controls{position:fixed;z-index:8;right:clamp(25px,5.2vw,90px);bottom:clamp(79px,9.4vw,128px);display:flex;align-items:center;gap:11px;pointer-events:auto}.control{border:1px solid rgba(242,243,238,.22);padding:9px 11px;color:var(--ink);background:rgba(5,6,7,.42);backdrop-filter:blur(8px);font-size:9px;font-weight:700;letter-spacing:.11em;transition:border-color .2s ease,background .2s ease,transform .2s var(--ease),color .2s ease}.control span{color:var(--acid);font-size:14px;vertical-align:-1px}.control:hover,.control:focus-visible{border-color:var(--acid);background:rgba(215,255,63,.12);outline:none;transform:translateY(-2px)}.control:disabled{opacity:.3;cursor:not-allowed}.control-back{display:none}
.loader{z-index:20;display:grid;place-items:center;overflow:hidden;background:#050607;transition:opacity .9s var(--ease),visibility .9s step-end}.loader::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 50% 45%,rgba(215,255,63,.08),transparent 30%)}.loader.is-exiting{opacity:0;visibility:hidden}.loader-grain{position:absolute;inset:-30%;opacity:.11;background-image:repeating-radial-gradient(circle at 50% 50%,rgba(255,255,255,.22) 0 1px,transparent 1px 3px);animation:grain .2s steps(2) infinite}@keyframes grain{50%{transform:translate3d(2%,-3%,0)}}.loader-content{position:relative;z-index:1;width:min(440px,calc(100vw - 48px));text-align:center}.loader-content p{margin:0;color:var(--acid);font-size:9px;font-weight:700;letter-spacing:.22em}.loader-content strong{display:block;margin:11px 0 15px;color:var(--ink);font-size:clamp(92px,14vw,170px);line-height:.7;letter-spacing:-.12em}.loader-content>span{color:var(--soft);font-size:9px;font-weight:700;letter-spacing:.16em}.loader-content>i{display:block;height:2px;margin:14px 0 28px;overflow:hidden;background:rgba(242,243,238,.18)}.loader-content>i b{display:block;width:0;height:100%;background:var(--acid);box-shadow:0 0 18px var(--acid);transition:width .35s ease}#enter-button{border:1px solid var(--acid);padding:13px 16px;color:#101302;background:var(--acid);font-size:10px;font-weight:800;letter-spacing:.12em;transition:transform .2s var(--ease),box-shadow .2s ease}#enter-button span{margin-left:16px;font-size:15px}#enter-button:disabled{opacity:.35}#enter-button:not(:disabled):hover,#enter-button:not(:disabled):focus-visible{outline:none;transform:translateY(-3px);box-shadow:0 13px 36px rgba(215,255,63,.25)}.experience.is-loading .hud,.experience.is-loading .copy,.experience.is-loading .readout,.experience.is-loading .chapter-marker,.experience.is-loading .scroll-cue,.experience.is-loading .controls{opacity:0;pointer-events:none}
@media(max-width:760px){.stage-video{object-position:56% 50%}.stage::before{background:linear-gradient(0deg,rgba(5,6,7,.9),transparent 62%,rgba(5,6,7,.35))}.system-state{display:none}.chapter-nav{top:auto;right:24px;bottom:25px;left:24px;display:grid;grid-template-columns:repeat(8,1fr);gap:6px;transform:none}.chapter{display:block;padding:7px 2px;text-align:center}.chapter span{font-size:9px}.chapter em,.chapter i{display:none}.chapter.is-current::after{content:"";position:absolute;right:0;bottom:0;left:0;height:1px;background:var(--acid)}.copy{bottom:146px;width:calc(100vw - 48px)}h1{max-width:410px;font-size:clamp(48px,14.8vw,73px)}.copy-cn{max-width:345px;margin-top:23px;font-size:14px}.copy-detail{max-width:350px;font-size:11px}.copy-mantra{margin-top:14px;font-size:7px}.readout{right:24px;bottom:72px;width:min(214px,57vw);padding-top:10px}.readout-value{margin-top:10px;font-size:25px}.readout>p:not(.readout-top){display:none}.readout-meter{margin-top:9px}.chapter-marker,.scroll-cue,.controls{display:none}.stage-grid{background-size:46px 46px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}