@font-face{font-family:"Instrument Serif";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-latin.woff2) format("woff2")}@font-face{font-family:"Instrument Serif";font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/instrument-serif-italic-latin.woff2) format("woff2")}:root{color-scheme:light;--ink: #102a36;--muted: #3a5866;--faint: rgb(16 42 54 / 55%);--hairline: rgb(16 42 54 / 20%);--glass: rgb(244 250 252 / 52%);--scrim: rgb(236 245 248 / 88%);--accent: #2f8fb4;--page-gutter: clamp(24px, 5vw, 88px);--display: "Instrument Serif", "Times New Roman", Georgia, serif;--sans: "Segoe UI Variable Text", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--mono: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;font-family:var(--sans);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#e8f2f5;color:var(--ink)}body[data-tone=dark]{color-scheme:dark;--ink: #f0fafc;--muted: #c3dee8;--faint: rgb(225 244 250 / 58%);--hairline: rgb(216 243 249 / 26%);--glass: rgb(6 30 52 / 38%);--scrim: rgb(3 22 40 / 86%);--accent: #8fdcf2}::selection{background:#8fd3ea;color:#092334}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit}:where(a,button):focus-visible{outline:2px solid #35abd0;outline-offset:6px;border-radius:2px}.skip-link{position:fixed;z-index:10;top:-60px;left:24px;padding:12px 20px;background:#edf8fb;color:#183442}.skip-link:focus{top:16px}.landscape,#glacier-canvas,.scene-wash,.scene-grain{position:fixed;inset:0;width:100%;height:100%;pointer-events:none}.landscape{z-index:0;background:linear-gradient(170deg,#a7d6e9,#eef8fc 42%,#c9e5ee 52%,#488db1 73%,#133c5d)}#glacier-canvas{display:block;opacity:0;transition:opacity 1.2s ease}body[data-render-state=ready] #glacier-canvas{opacity:1}.scene-wash{background:radial-gradient(ellipse 70% 90% at 0% 50%,#f0f7f9b8,#f0f7f900 70%);transition:background .7s}body[data-tone=dark] .scene-wash{background:radial-gradient(ellipse 70% 95% at 0% 50%,#021426b3,#02142600 72%)}.scene-grain{opacity:.05;mix-blend-mode:overlay;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='.88' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23000' filter='url(%23n)' opacity='.6' d='M0 0h180v180H0z'/%3E%3C/svg%3E")}.site-header{position:fixed;z-index:4;inset:0 0 auto;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;padding:26px var(--page-gutter);color:var(--ink);transition:color .6s}.site-header:before{content:"";position:absolute;z-index:-1;inset:0 0 auto;height:140px;background:linear-gradient(180deg,var(--scrim),transparent);pointer-events:none;transition:background .6s}.brand{display:inline-flex;align-items:center;gap:12px;justify-self:start}.brand svg{width:26px;height:29px}.brand>span{font-size:15px;font-weight:600;letter-spacing:.3em;line-height:1}.brand small{display:block;margin-top:6px;font-family:var(--display);font-style:italic;font-size:13px;font-weight:400;letter-spacing:.02em;color:var(--muted)}.edition{margin:0;display:grid;gap:4px;text-align:center}.edition span{font-family:var(--display);font-style:italic;font-size:17px;line-height:1}.edition b{font-family:var(--mono);font-size:10.5px;font-weight:400;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}.header-meta{justify-self:end;display:flex;align-items:center;gap:28px}.elevation{margin:0;display:flex;align-items:baseline;gap:10px;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--muted)}.elevation b{min-width:7ch;font-weight:400;font-size:13px;letter-spacing:.04em;color:var(--ink);font-variant-numeric:tabular-nums;text-align:right}.surface-link{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border:1px solid var(--hairline);border-radius:999px;background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:12px;letter-spacing:.08em;transition:border-color .3s,background .6s}.surface-link:hover{border-color:currentColor}.render-notice{position:fixed;z-index:3;right:var(--page-gutter);top:96px;display:flex;align-items:center;gap:8px;max-width:280px;font-size:11.5px;line-height:1.7;color:var(--muted);transition:opacity .5s}.render-notice[hidden]{display:none}.notice-dot{width:5px;height:5px;flex:none;border-radius:50%;background:currentColor;animation:pulse 1.6s ease-in-out infinite}@keyframes pulse{50%{opacity:.25}}.journey{position:relative;z-index:1}.chapter{position:relative;height:120svh;min-height:720px}.chapter:last-child{height:100svh;min-height:640px}.chapter-inner{position:fixed;inset:0;z-index:1;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:120px var(--page-gutter);opacity:var(--chapter-opacity, 0);transform:translateY(var(--chapter-shift, 0));transition:color .65s;pointer-events:none;will-change:opacity,transform}.chapter[data-visible] .chapter-inner{pointer-events:auto}.chapter-label{display:flex;align-items:center;gap:14px;margin:0 0 26px;color:var(--muted)}.label-number{font-family:var(--display);font-style:italic;font-size:26px;line-height:1;color:var(--ink)}.chapter-label i{width:36px;height:1px;background:currentColor;opacity:.55}.label-name{font-family:var(--mono);font-size:11px;letter-spacing:.24em}h1{margin:0 0 30px -.04em;font-family:var(--display);font-size:clamp(68px,9.2vw,164px);line-height:.86;font-weight:400;letter-spacing:-.015em}h1>span{display:block;white-space:nowrap}h1 em{font-style:italic;letter-spacing:-.02em}.title-dot{color:var(--accent)}.hero-chinese{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 20px;margin:0 0 20px;font-size:22px;font-weight:300;letter-spacing:.16em}.hero-chinese>span{font-size:12px;letter-spacing:.14em;color:var(--muted)}.chapter-copy{margin:0;max-width:27em;color:var(--muted);font-size:15px;font-weight:400;line-height:2.05;letter-spacing:.04em;white-space:pre-line}h2{margin:0 0 26px;font-size:clamp(34px,3.7vw,58px);font-weight:300;letter-spacing:.02em;line-height:1.3}.begin-link{display:inline-flex;align-items:center;gap:16px;margin-top:38px;padding:13px 20px 13px 24px;border:1px solid var(--hairline);border-radius:999px;background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);font-size:13px;letter-spacing:.12em;transition:border-color .3s,gap .3s}.begin-link svg{width:11px;height:20px;transition:transform .3s}.begin-link:hover{border-color:currentColor;gap:22px}.begin-link:hover svg{transform:translateY(3px)}.hero-caption{position:absolute;right:calc(var(--page-gutter) + 64px);bottom:104px;margin:0;display:grid;gap:8px;max-width:220px;padding-left:16px;border-left:1px solid var(--hairline);font-size:12px;line-height:1.7;letter-spacing:.08em;color:var(--muted)}.hero-caption span{font-family:var(--display);font-style:italic;font-size:17px;letter-spacing:.02em;color:var(--ink)}.chapter-note{display:flex;align-items:center;gap:12px;margin:34px 0 0;font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--faint)}.chapter-note i{display:block;width:28px;height:1px;background:currentColor;opacity:.7}.replay-link{display:inline-flex;align-items:center;gap:14px;margin-top:30px;padding:11px 20px;border:1px solid var(--hairline);border-radius:999px;background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);font-size:13px;letter-spacing:.1em;transition:border-color .3s}.replay-link:hover{border-color:currentColor}.chapter-nav{position:fixed;right:var(--page-gutter);top:50%;z-index:4;display:grid;gap:20px;transform:translateY(-50%);color:var(--ink);transition:color .6s}.chapter-nav:after{content:"";position:absolute;z-index:-1;right:4px;top:10px;bottom:10px;width:1px;background:var(--hairline)}.chapter-nav a{display:flex;align-items:center;justify-content:flex-end;gap:12px;min-width:30px;min-height:20px}.nav-title{opacity:0;transform:translate(6px);transition:opacity .25s,transform .25s;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em}.nav-number{font-family:var(--display);font-style:italic;font-size:15px;opacity:.55;transition:opacity .25s}.chapter-nav i{width:9px;height:9px;border:1px solid currentColor;border-radius:50%;background:var(--scrim);opacity:.7;transition:transform .3s,background .3s}.chapter-nav a[aria-current=step] i{background:currentColor;opacity:1;transform:scale(1.15);box-shadow:0 0 0 4px #8fdcf238}.chapter-nav a[aria-current=step] .nav-title{opacity:1;transform:none}.chapter-nav a[aria-current=step] .nav-number{opacity:1}.chapter-nav a:hover .nav-title,.chapter-nav a:focus-visible .nav-title{opacity:1;transform:none}.journey-footer{position:fixed;z-index:4;inset:auto 0 0;padding:22px var(--page-gutter) 26px;display:flex;align-items:center;gap:32px;color:var(--ink);transition:color .6s}.journey-footer:after{content:"";position:absolute;z-index:-1;inset:auto 0 0;height:140px;background:linear-gradient(0deg,var(--scrim),transparent);pointer-events:none;transition:background .6s}.footer-chapter{display:flex;align-items:baseline;gap:12px;margin:0;min-width:210px;font-family:var(--mono);font-size:11px;letter-spacing:.18em}.footer-number{font-family:var(--display);font-style:italic;font-size:22px;letter-spacing:0}.footer-chapter i{align-self:center;width:20px;height:1px;background:currentColor;opacity:.5}.journey-track{position:relative;flex:1;max-width:320px;height:1px;background:var(--hairline)}.journey-track:before{content:"";position:absolute;inset:-3px 0;background:linear-gradient(90deg,transparent calc(25% - .5px),var(--hairline) 0 calc(25% + .5px),transparent 0 calc(50% - .5px),var(--hairline) 0 calc(50% + .5px),transparent 0 calc(75% - .5px),var(--hairline) 0 calc(75% + .5px),transparent 0)}.journey-track span{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:left;background:currentColor}.motion-button{margin-left:auto;display:flex;align-items:center;gap:10px;padding:9px 16px;border:1px solid var(--hairline);border-radius:999px;background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:12px;cursor:pointer;letter-spacing:.08em;transition:border-color .3s}.motion-button:hover{border-color:currentColor}.motion-icon{width:8px;height:9px;border-left:2.5px solid currentColor;border-right:2.5px solid currentColor}.motion-button[aria-pressed=true] .motion-icon{width:0;height:0;border-style:solid;border-color:transparent;border-width:5px 0 5px 8px;border-left-color:currentColor;border-right-width:0}.no-script{position:fixed;right:24px;bottom:80px;max-width:240px;z-index:5;padding:12px 16px;background:#edf7fa;color:#183442;font-size:12px;line-height:1.8}body[data-render-state=fallback] .render-notice{background:#ebf7fbeb;color:#254d62;padding:12px 16px;border:1px solid #aecad6;border-radius:10px}body[data-render-state=fallback] .notice-dot{animation:none}body[data-render-state=fallback][data-tone=dark] .landscape{background:linear-gradient(150deg,#163b56,#1c6287 38%,#062239 80%)}@media(max-width:1080px){.elevation,.hero-caption{display:none}}@media(max-width:760px){:root{--page-gutter: 22px}.site-header{grid-template-columns:1fr auto;padding-top:20px;gap:12px}.brand{gap:9px}.brand svg{width:22px;height:25px}.brand>span{font-size:13px}.brand small{font-size:12px;margin-top:4px}.edition{text-align:right;justify-self:end}.edition span{font-size:15px}.edition b{font-size:9.5px}.header-meta{display:none}.chapter{height:120svh;min-height:660px}.chapter:last-child{min-height:660px}.chapter-inner{min-height:100svh;padding-top:150px;padding-bottom:130px;padding-right:46px;justify-content:flex-start}h1{font-size:clamp(60px,18vw,96px);margin-bottom:22px}.hero-chinese{font-size:19px}.chapter-label{margin-bottom:20px}.label-number{font-size:23px}.label-name{font-size:10px}.chapter-copy{font-size:13.5px;line-height:2;letter-spacing:.02em}h2{font-size:30px;margin-bottom:22px}.begin-link{margin-top:30px}.chapter-nav{right:14px;gap:16px;top:64%}.nav-title,.nav-number{display:none}.chapter-nav a{min-width:28px;min-height:26px}.journey-footer{gap:14px;padding-bottom:max(20px,env(safe-area-inset-bottom))}.footer-chapter{min-width:0;gap:9px;font-size:10px;letter-spacing:.12em}.footer-chapter i{display:none}.footer-number{font-size:19px}.journey-track{max-width:48px}.motion-button{font-size:11px;white-space:nowrap;padding:8px 13px}.render-notice{top:86px;font-size:10.5px;max-width:245px}.scene-wash{background:linear-gradient(180deg,rgb(237 247 250 / 55%),transparent 80%)}body[data-tone=dark] .scene-wash{background:linear-gradient(180deg,rgb(3 27 48 / 66%),transparent 85%)}}@media(max-width:760px)and (max-height:720px){.chapter-inner{padding-top:116px;padding-bottom:96px}h1{font-size:clamp(52px,15vw,80px);margin-bottom:16px}.hero-chinese{font-size:17px;margin-bottom:12px}.chapter-label{margin-bottom:14px}.chapter-copy{font-size:13px;line-height:1.95}h2{font-size:26px;margin-bottom:16px}.chapter-note,.begin-link,.replay-link{margin-top:20px}}@media(max-height:620px)and (min-width:761px){.chapter-inner{padding-top:96px;padding-bottom:80px}h1{font-size:84px;margin-bottom:18px}.chapter-label{margin-bottom:16px}.hero-chinese{margin-bottom:14px}.begin-link{margin-top:20px}.hero-caption{display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}.chapter-inner{transform:none}}
