:root{--bg: #f4f4f7;--bg-base: #ffffff;--bg-elevated: #fbfbfd;--surface: #ffffff;--ink: #0b0b0f;--text: #0b0b0f;--text-secondary: rgba(17, 18, 28, .6);--text-tertiary: rgba(17, 18, 28, .42);--text-faint: rgba(17, 18, 28, .22);--accent: #d23d42;--accent-core: #dc565b;--accent-bright: #ff6b70;--accent-deep: #7e2528;--accent-soft: rgba(220, 86, 91, .12);--accent-glow: rgba(220, 86, 91, .42);--cobalt: var(--accent-core);--cobalt-bright: var(--accent-bright);--cobalt-deep: var(--accent-deep);--cobalt-soft: var(--accent-soft);--cobalt-glow: var(--accent-glow);--runner-0: #dc565b;--runner-1: #ff9f45;--runner-2: #ff5d8f;--runner-3: #a78bfa;--runner-4: #ffd84d;--runner-5: #4c8dff;--runner-6: #45d8ff;--runner-7: #34e0a1;--success: #30d158;--warn: #ffb340;--glass-fill: rgba(255, 255, 255, .55);--glass-fill-strong: rgba(255, 255, 255, .74);--glass-edge: rgba(17, 18, 28, .07);--glass-specular: rgba(255, 255, 255, .95);--glass-blur: 22px;--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro 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reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}body{min-height:100vh;background-color:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:17px;line-height:1.5;letter-spacing:-.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;overflow-x:hidden;word-break:keep-all;background-image:radial-gradient(70% 50% at 50% -10%,rgba(255,255,255,.9),transparent 62%),linear-gradient(180deg,#f7f7fa 0%,var(--bg) 40%);background-attachment:fixed}html:lang(ko) body{letter-spacing:0}html:lang(ko) .display{letter-spacing:-.015em;line-height:1.08}html:lang(ko) .h2{letter-spacing:-.014em;line-height:1.16}html:lang(ko) h1,html:lang(ko) h2,html:lang(ko) h3{letter-spacing:-.012em}html:lang(ko) .lede,html:lang(ko) p{letter-spacing:0}img,svg,canvas{display:block;max-width:100%}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}::selection{background:var(--accent-core);color:#fff}body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;pointer-events:none;opacity:.02;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}.section{position:relative;padding-block:clamp(88px,12vw,168px)}.snap-chapter{scroll-snap-align:start;scroll-snap-stop:normal}.section--dark{color-scheme:dark;color:#fff;--text: #fff;--text-secondary: rgba(255, 255, 255, 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