@charset "UTF-8";
:root{color-scheme:dark;--ink:#f1f2f4;--mute:#b1bccb;--soft:#74859e;--accent:#b8cfed;--line:rgba(187,211,243,.18);--deep:#030711;--serif:Georgia,'Noto Serif SC','Songti SC',serif}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scrollbar-color:#38435d #080d19}
body{margin:0;min-height:100%;background:var(--deep);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'Inter','PingFang SC','Microsoft YaHei',sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
button,a{-webkit-tap-highlight-color:transparent}
button{color:inherit;font:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}
a:hover,button:hover{transition:color .22s,background .22s,border-color .22s}
button:focus-visible,a:focus-visible{outline:2px solid #a6d3ff;outline-offset:5px}
.sky-backdrop,#webgl,.fallback-scene,.grain,.overlay-shade{position:fixed;inset:0}
.sky-backdrop{background:radial-gradient(ellipse at 66% 42%,#0c1a2d 0%,#070c17 30%,#02050d 72%);z-index:0}
#webgl{z-index:2;overflow:hidden}
#webgl canvas{display:block;width:100%;height:100%}
.fallback-scene{z-index:1;display:grid;place-items:center;pointer-events:none;opacity:.95;transition:opacity 1s}
.is-ready .fallback-scene{opacity:0}
.fallback-planet{position:absolute;width:min(49vw,640px);height:min(49vw,640px);border-radius:50%;left:55%;top:50%;transform:translate(-50%,-50%);background:radial-gradient(circle at 36% 28%,#e7c8a8 0%,#cbb28b 9%,#9a745b 23%,#5a4451 45%,#162332 64%,#070f1f 78%);box-shadow:inset -65px -28px 75px #02050aaa,0 0 110px #38506e20;opacity:.95}
.fallback-ring{position:absolute;width:min(64vw,820px);height:min(14vw,180px);left:55%;top:50%;transform:translate(-50%,-50%) rotate(-19deg);border:27px solid #c4ad796e;border-radius:50%;opacity:.3}
.fallback-glow{position:absolute;left:54%;top:48%;width:90vw;height:80vh;transform:translate(-50%,-50%);background:radial-gradient(ellipse,#243f6340,transparent 63%)}
.grain{z-index:4;pointer-events:none;opacity:.095;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E")}
.overlay-shade{z-index:3;pointer-events:none;background:linear-gradient(90deg,#02050b9e,transparent 44%,transparent 72%,#02050b38);mix-blend-mode:normal}
.masthead{position:fixed;z-index:30;inset:0 0 auto;display:flex;align-items:center;justify-content:space-between;padding:29px clamp(22px,4.6vw,86px) 28px;background:linear-gradient(180deg,#030711c9,transparent);pointer-events:none}
.masthead>*{pointer-events:auto}.logo{display:inline-flex;align-items:center;gap:13px}
.logo-emblem{width:39px;height:39px;border:1px solid #d0d8e8a1;display:grid;place-items:center;border-radius:50%;box-shadow:0 0 28px #7c9fdc28;position:relative}
.logo-emblem::before{content:"";position:absolute;inset:5px;border:1px solid #7185a47a;border-radius:50%}
.logo-emblem span{font-size:23px;font-family:var(--serif);line-height:1}
.logo-copy{display:grid;gap:7px}.logo-copy strong{font-size:13px;letter-spacing:.21em;font-weight:600}.logo-copy small{font-size:8px;color:#899bb8;letter-spacing:.27em}
.masthead-center,.masthead-right{font-size:10px;letter-spacing:.17em;color:#b7c4d7}.masthead-center{display:flex;align-items:center;gap:10px;margin-left:-8%}.status-pulse{width:5px;height:5px;background:#a7cde6;border-radius:50%;box-shadow:0 0 8px #a7cde6;animation:pulse 3s ease-in-out infinite}.masthead-divider{color:#4d6285;margin:0 7px}.masthead-right .count{font-size:14px;color:white;margin-left:17px;font-weight:600}.total{color:#647790;margin-left:4px}
.story{position:relative;z-index:5;pointer-events:none}
.chapter{position:relative;width:100%;height:100svh;min-height:650px;display:flex;align-items:center;isolation:isolate}
.chapter-content{width:min(530px,43vw);margin-left:clamp(22px,10.6vw,210px);padding:70px 0 95px;pointer-events:none;position:relative;will-change:transform,opacity;transition:transform 700ms cubic-bezier(.21,.6,.2,1),opacity 650ms ease}
.chapter[data-side="right"]{justify-content:flex-end}.chapter[data-side="right"] .chapter-content{margin-left:0;margin-right:clamp(48px,12.5vw,240px)}
.chapter-content>*{position:relative;z-index:1}
.motion .chapter:not(.active) .chapter-content{opacity:.12;transform:translateY(26px)}.motion .chapter.active .chapter-content{opacity:1;transform:translateY(0)}
.eyebrow{display:flex;align-items:center;gap:14px;color:#a8bcd8;font-size:10px;font-weight:600;letter-spacing:.22em;white-space:nowrap}
.eyebrow-line{width:28px;height:1px;background:#9bb5db;display:inline-block;flex:none}
.display-index{position:absolute;z-index:0;top:-100px;left:-23px;font-family:var(--serif);font-weight:400;font-size:clamp(150px,24vw,330px);line-height:1;color:#8cabc7;opacity:.035;pointer-events:none;letter-spacing:-.09em}
.chapter h1,.chapter h2{font-weight:420;letter-spacing:-.06em;line-height:1.35;text-wrap:balance;margin:24px 0}
.chapter h1{font-size:clamp(50px,6.2vw,104px);line-height:1.22;white-space:nowrap}
.chapter h2{font-size:clamp(43px,5vw,81px);white-space:nowrap}
.chapter h1 em,.chapter h2 em{font-family:var(--serif);font-style:normal;font-weight:400;color:#c2d5ee;letter-spacing:-.07em}
.planet-number{display:block;margin-top:34px;font-size:10px;color:#768baa;letter-spacing:.25em}
.eng-title{font-size:12px;letter-spacing:.4em;color:#b0c6e1;display:flex;gap:13px;align-items:center;margin:0 0 26px}.eng-title span{font-size:19px;letter-spacing:normal;font-family:var(--serif);color:#abc1d9}
.description{max-width:345px;color:#a0b0c7;line-height:2.1;letter-spacing:.055em;font-size:13px;margin:23px 0 0;text-wrap:pretty}
.data-row{display:flex;gap:28px;border-top:1px solid var(--line);padding-top:26px;margin-top:44px;max-width:440px;justify-content:space-between}
.data-row div{display:grid;gap:11px;min-width:0}.data-row span{font-size:10px;color:#7185a4;letter-spacing:.13em}.data-row strong{font-size:13px;font-weight:500;white-space:nowrap;color:#d9e5f5}
.chapter-intro .intro-copy{padding-top:70px}.chapter-intro h1{margin-top:31px;font-size:clamp(51px,6.3vw,102px)}.intro-copy .description{max-width:375px;margin-top:26px}
.hero-metrics{display:flex;gap:36px;padding-top:27px;border-top:1px solid var(--line);margin-top:42px;max-width:445px}.hero-metrics div{display:flex;flex-direction:column;gap:9px}.hero-metrics strong{font-weight:400;font-size:29px}.hero-metrics strong span{font-size:15px;margin-left:3px;color:#93abc9}.hero-metrics small{font-size:9px;letter-spacing:.13em;color:#7287a5;white-space:nowrap}
.text-link{pointer-events:auto;display:inline-flex;align-items:center;gap:24px;border:0;border-bottom:1px solid #a0bde3;background:none;color:#dbeaff;padding:0 0 11px;font-size:12px;letter-spacing:.15em;margin-top:46px}.text-link span{font-size:19px}.text-link:hover{color:white;gap:33px}
.chapter-outro .outro-copy h2{font-size:clamp(45px,5.2vw,82px)}.outro-credit{font-size:9px;color:#53627d;letter-spacing:.14em;margin-top:65px}
.chapter-rail{position:fixed;right:clamp(22px,3.2vw,66px);top:50%;transform:translateY(-50%);z-index:20;display:grid;justify-items:end;gap:2px}.rail-line{position:absolute;right:6px;top:10px;bottom:10px;width:1px;background:linear-gradient(#6f87a930,#8fa8ce81,#6478912b);z-index:-1}
.rail-item{display:flex;align-items:center;justify-content:end;gap:13px;background:transparent;border:0;padding:7px 0 7px 8px;width:95px;color:#7e8da6}.rail-label{font-size:10px;letter-spacing:.09em;opacity:0;transform:translateX(6px);transition:all .26s}.rail-dot{width:5px;height:5px;border-radius:50%;border:1px solid #9caec5;background:#050914;transition:all .25s}
.rail-item:hover .rail-label,.rail-item.active .rail-label{opacity:1;transform:translateX(0)}.rail-item:hover .rail-dot,.rail-item.active .rail-dot{width:9px;height:9px;margin-right:-2px;background:#eaf5ff;border:1px solid white;box-shadow:0 0 10px #bfd6ffb6}
.interaction-hint{position:fixed;z-index:20;bottom:36px;left:clamp(22px,4.6vw,86px);display:flex;align-items:center;gap:12px;font-size:10px;letter-spacing:.15em;color:#8d9fbc;pointer-events:none}.hint-icon{font-size:18px;color:#a1bfdf}
.planet-info{position:fixed;z-index:21;bottom:28px;left:50%;transform:translateX(-50%);min-width:170px;display:flex;flex-direction:column;align-items:center;gap:4px;pointer-events:none;text-align:center}
.planet-info span{font-size:8px;color:#657d9f;letter-spacing:.22em}.planet-info strong{font-size:12px;font-weight:500;letter-spacing:.14em;color:#cbdaf0}.planet-info small{font-size:10px;color:#7589a6;max-width:230px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bottom-actions{position:fixed;z-index:25;right:clamp(22px,4.6vw,86px);bottom:23px;display:flex;align-items:center;gap:6px;padding:6px;border:1px solid #c1d7f32b;border-radius:50px;background:#08101fbb;backdrop-filter:blur(24px);box-shadow:0 15px 40px #0007}
.bottom-actions button{min-height:36px;display:flex;align-items:center;justify-content:center;gap:9px;padding:0 13px;border:0;border-radius:40px;background:transparent;color:#aabbcf}.bottom-actions button:hover{background:#e5f1ff19;color:white}.bottom-actions button[aria-pressed="true"]{color:#dfeeff;background:#8db9ff16}.button-icon{font-size:16px;line-height:1;color:#e1ebf7}.button-caption{font-size:9px;letter-spacing:.09em;white-space:nowrap}
.scroll-line{position:fixed;z-index:28;left:0;right:0;bottom:0;height:2px;background:#2c384c88}.scroll-line-progress{height:100%;width:0%;background:#a6c8f5;box-shadow:0 0 15px #a6c8f5}
#loading{position:fixed;z-index:80;left:50%;top:46%;transform:translate(-50%,-50%);width:240px;display:flex;align-items:center;flex-direction:column;gap:18px;text-align:center;color:#b4c8e2;font-size:11px;letter-spacing:.2em;pointer-events:none;transition:opacity .6s,visibility .6s}
.loading-star{font-family:var(--serif);font-size:42px;animation:pulse 2.7s infinite}.loading-track{width:130px;height:1px;background:#8497b33f;overflow:hidden}.loading-track i{display:block;height:1px;width:42px;background:#bfdaf5;animation:loading 1.4s ease-in-out infinite}.is-ready #loading{opacity:0;visibility:hidden}
.toast{position:fixed;z-index:90;left:50%;bottom:100px;transform:translateX(-50%) translateY(10px);border:1px solid var(--line);border-radius:8px;padding:11px 19px;background:#0c1526e8;color:#c4d8ef;font-size:11px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;white-space:nowrap}.toast.shown{opacity:1;transform:translateX(-50%) translateY(0)}
.credits-dialog{width:min(460px,calc(100vw - 35px));padding:38px;background:#0a1323eF;border:1px solid #8faec15e;color:#e6f0fb;border-radius:12px;backdrop-filter:blur(25px);box-shadow:0 35px 130px #000d}.credits-dialog::backdrop{background:#020712ad;backdrop-filter:blur(6px)}.credits-dialog .eyebrow{font-size:10px;letter-spacing:.21em}.credits-dialog h3{font:normal 32px/1.3 var(--serif);margin:20px 0}.credits-dialog p{font-size:12px;line-height:2;color:#a0b3cc}.credits-dialog p a{color:#d2e8ff;text-decoration:underline;text-underline-offset:4px}.credits-meta{margin-top:26px;border-top:1px solid var(--line);padding-top:20px;letter-spacing:.12em;font-size:9px;color:#7588a4}.credits-close{position:absolute;right:16px;top:16px;font-size:18px;border:0;background:transparent;color:#d0e4f3}
@keyframes pulse{0%,100%{opacity:.4}50%{opacity:1}}@keyframes loading{0%{transform:translateX(-42px)}100%{transform:translateX(170px)}}
@media (max-width:1100px){.masthead-center{display:none}.chapter-content{margin-left:9vw;width:49vw}.chapter[data-side="right"] .chapter-content{margin-right:10vw}.chapter h2{font-size:clamp(43px,5.3vw,67px)}.planet-info{display:none}.button-caption{display:none}.bottom-actions button{padding:0 10px}.interaction-hint{font-size:9px}}
@media (max-width:720px){.masthead{padding:17px 22px}.logo-emblem{height:33px;width:33px}.logo-copy strong{font-size:11px}.logo-copy small{font-size:7px;letter-spacing:.14em}.masthead-right{font-size:8px;letter-spacing:0}.masthead-right .count{margin-left:5px;font-size:12px}.chapter{align-items:flex-start;min-height:0;height:100svh}.chapter-content,.chapter[data-side="right"] .chapter-content{width:calc(100% - 44px);max-width:410px;margin:0 22px;padding:115px 0 0}.chapter-intro .intro-copy{padding-top:155px}.chapter h1{font-size:clamp(43px,11vw,72px)}.chapter h2{font-size:clamp(39px,9.2vw,60px);margin:15px 0 8px}.chapter .eyebrow{font-size:9px}.planet-number{margin-top:18px}.description{line-height:1.8;max-width:300px;margin-top:14px;font-size:12px}.eng-title{font-size:10px;margin-bottom:10px}.data-row{margin-top:24px;padding-top:18px;gap:13px;max-width:370px}.data-row strong{font-size:11px}.data-row span{font-size:9px}.hero-metrics{margin-top:25px;gap:23px;padding-top:18px}.hero-metrics strong{font-size:24px}.hero-metrics small{font-size:7px}.text-link{margin-top:25px}.chapter-rail{right:14px;top:auto;bottom:90px;transform:none;display:none}.bottom-actions{right:17px;bottom:17px;padding:4px;gap:0}.bottom-actions button{min-height:35px;padding:0 8px}.bottom-actions .button-icon{font-size:14px}.interaction-hint{left:22px;bottom:34px;font-size:8px;max-width:125px;letter-spacing:.08em}.hint-icon{display:none}.display-index{font-size:170px;left:-10px;top:25px}.overlay-shade{background:linear-gradient(180deg,#02050dea,#03071150 43%,transparent 75%)}.fallback-planet{width:65vw;height:65vw;top:70%;left:56%}.fallback-ring{top:70%;width:86vw;height:20vw}.planet-info{display:none}.outro-credit{font-size:8px}}
@media (max-height:690px) and (min-width:721px){.chapter{min-height:600px}.chapter-content{padding:80px 0 50px}.planet-number{margin-top:15px}.chapter h2{font-size:clamp(40px,4vw,66px)}.description{margin-top:10px}.data-row{margin-top:22px;padding-top:18px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.status-pulse,.loading-star,.loading-track i{animation:none}.chapter-content{transition:none}.motion .chapter:not(.active) .chapter-content{opacity:.95;transform:none}}

/* Keep module-load failures visible rather than silently showing the static fallback. */
#loading.failed{opacity:1!important;visibility:visible!important;top:auto;bottom:80px;transform:translateX(-50%);width:min(440px,calc(100vw - 32px));background:rgba(10,20,36,.95);border:1px solid rgba(255,181,142,.32);padding:18px;border-radius:12px;letter-spacing:.04em;font-size:12px;line-height:1.7;z-index:90}
#loading.failed .loading-track,#loading.failed .loading-star{display:none}