*{margin:0;padding:0;box-sizing:border-box}:root{--color-text:#1a1a1a;--color-text-light:#666;--color-text-lighter:#888;--color-bg:#fff;--color-bg-alt:#f8f8f8;--color-bg-subtle:#f5f5f5;--color-border:#e5e5e5;--color-border-light:#f0f0f0;--color-accent:#2c3e50;--color-accent-light:#34495e;--font-serif:"Georgia","Times New Roman",serif;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Roboto","Oxygen","Ubuntu","Cantarell","Fira Sans","Droid Sans","Helvetica Neue",sans-serif;--spacing-xs:0.5rem;--spacing-sm:1rem;--spacing-md:1.5rem;--spacing-lg:2.5rem;--spacing-xl:3.5rem;--spacing-2xl:5rem;--max-width:900px;--line-height:1.75;--line-height-tight:1.4}body{font-family:var(--font-sans);color:var(--color-text);background-color:var(--color-bg);line-height:var(--line-height);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;word-wrap:break-word;overflow-wrap:break-word}main{min-height:calc(100vh - 140px);padding:var(--spacing-xl) 0 var(--spacing-2xl)}.container{max-width:var(--max-width);margin:0 auto;padding:0 var(--spacing-md);position:relative;width:100%;box-sizing:border-box;overflow-wrap:break-word;word-wrap:break-word}.page-header{margin-bottom:var(--spacing-2xl);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--color-border-light)}.page-header h1{font-family:var(--font-serif);font-size:2.5rem;font-weight:400;color:var(--color-accent);margin-bottom:var(--spacing-sm);line-height:var(--line-height-tight);letter-spacing:-.01em;word-wrap:break-word;overflow-wrap:break-word}.page-header p{font-size:1.125rem;color:var(--color-text-light);font-style:normal;font-weight:400}.content-section{margin-bottom:var(--spacing-xl)}.content-section:last-child{margin-bottom:0}.content-section h2{font-family:var(--font-serif);font-size:1.875rem;font-weight:400;color:var(--color-accent);margin-bottom:var(--spacing-md);margin-top:var(--spacing-xl);line-height:var(--line-height-tight);letter-spacing:-.01em;word-wrap:break-word;overflow-wrap:break-word}.content-section h2:first-of-type{margin-top:0}.content-section h3{font-family:var(--font-serif);font-size:1.5rem;font-weight:400;color:var(--color-accent);margin-bottom:var(--spacing-sm);margin-top:var(--spacing-lg);line-height:var(--line-height-tight)}.content-section p{margin-bottom:var(--spacing-md);font-size:1.0625rem;color:var(--color-text);word-wrap:break-word;overflow-wrap:break-word;-webkit-hyphens:auto;hyphens:auto}.content-section p:last-child{margin-bottom:0}.content-section ol,.content-section ul{margin-bottom:var(--spacing-md);padding-left:var(--spacing-lg);margin-left:0}.content-section li{margin-bottom:var(--spacing-sm);font-size:1.0625rem;color:var(--color-text);line-height:var(--line-height)}.content-section li:last-child{margin-bottom:0}.content-section strong{font-weight:600;color:var(--color-accent)}.cetr-diagram{background-color:#fafafa;border-radius:8px;padding:var(--spacing-xl);margin:var(--spacing-xl) 0}.cetr-flow{display:flex;align-items:stretch;justify-content:center;flex-wrap:nowrap;gap:0;flex-direction:row}.cetr-stage{background-color:var(--color-bg);border-radius:6px;padding:var(--spacing-md);flex:1 1;min-width:0;border:1px solid var(--color-border);display:flex;flex-direction:column;align-items:flex-start;overflow-wrap:break-word;word-wrap:break-word;box-sizing:border-box}.cetr-stage-header{display:flex;align-items:baseline;gap:var(--spacing-xs);margin-bottom:var(--spacing-xs)}.cetr-stage-letter{font-family:var(--font-sans);font-size:1.25rem;font-weight:700;color:var(--color-accent);line-height:1}.cetr-stage-name{font-family:var(--font-sans);font-size:1rem;font-weight:600;color:#1a1a1a;line-height:1.3}.cetr-stage-desc{font-family:var(--font-sans);font-size:.875rem;color:#666;font-weight:400;line-height:1.5;margin:0;word-wrap:break-word;overflow-wrap:break-word;width:100%}.cetr-connector{font-family:var(--font-sans);font-size:1.5rem;color:var(--color-accent);opacity:.5;flex-shrink:0;padding:0 var(--spacing-sm);display:flex;align-items:center;line-height:1}.cetr-connector-loop{display:none}.example-box{background-color:var(--color-bg-subtle);border-left:3px solid var(--color-accent);padding:var(--spacing-md);margin:var(--spacing-md) 0;border-radius:0 4px 4px 0}.example-box h4{font-family:var(--font-serif);font-size:1.125rem;color:var(--color-accent);margin-bottom:var(--spacing-sm);font-weight:400}.example-box p{margin-bottom:0;color:var(--color-text)}@media (max-width:767px){:root{--spacing-xs:0.5rem;--spacing-sm:0.875rem;--spacing-md:1.25rem;--spacing-lg:2rem;--spacing-xl:2.5rem;--spacing-2xl:3.5rem}html{-webkit-text-size-adjust:100%}body{font-size:16px;line-height:1.7}main{padding:var(--spacing-md) 0 var(--spacing-xl);min-height:calc(100vh - 120px)}.container{padding:0 var(--spacing-sm);max-width:100%}.page-header{margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-sm);border-bottom-width:1px}.page-header h1{font-size:1.75rem;line-height:1.3;margin-bottom:var(--spacing-xs)}.page-header p{font-size:1rem;line-height:1.5}.content-section{margin-bottom:var(--spacing-lg)}.content-section h2{font-size:1.5rem;margin-top:var(--spacing-lg);margin-bottom:var(--spacing-sm);line-height:1.3}.content-section h2:first-of-type{margin-top:0}.content-section h3{font-size:1.25rem;margin-top:var(--spacing-md);margin-bottom:var(--spacing-xs);line-height:1.3}.content-section p{font-size:1rem;margin-bottom:var(--spacing-sm);line-height:1.7}.content-section ol,.content-section ul{padding-left:var(--spacing-md);margin-bottom:var(--spacing-sm)}.content-section li{font-size:1rem;margin-bottom:var(--spacing-xs);line-height:1.7}.content-section strong{font-weight:600}.cetr-diagram{padding:var(--spacing-md);margin:var(--spacing-lg) 0;border-radius:8px;background-color:#fafafa;border:1px solid var(--color-border)}.cetr-flow{flex-direction:column}.cetr-flow,.cetr-stage{display:flex;gap:var(--spacing-md)}.cetr-stage{flex:1 1;width:100%;padding:var(--spacing-md);background-color:var(--color-bg);border:1px solid var(--color-border);border-radius:8px;flex-direction:row;align-items:center;box-shadow:0 1px 3px rgba(0,0,0,.06)}.cetr-stage-header{display:flex;flex-direction:column;align-items:flex-start;margin-bottom:0;min-width:90px;flex-shrink:0}.cetr-stage-letter{font-size:1.75rem;font-weight:700;color:var(--color-accent);line-height:1;margin-bottom:4px}.cetr-stage-name{font-size:1.0625rem;font-weight:600;color:#1a1a1a;line-height:1.2}.cetr-stage-desc{font-size:.9375rem;line-height:1.6;margin:0;color:#666;flex:1 1}.cetr-connector{display:none}.example-box{padding:var(--spacing-sm);margin:var(--spacing-sm) 0;border-left-width:3px}.example-box h4{font-size:1rem;margin-bottom:var(--spacing-xs)}.example-box p{font-size:.9375rem;line-height:1.6}}.Footer_footer__pQtti{border-top:1px solid var(--color-border-light);margin-top:var(--spacing-2xl);padding:var(--spacing-lg) 0;text-align:center;color:var(--color-text-lighter);font-size:.9375rem}.Footer_footer__pQtti p{margin:0}@media (max-width:767px){.Footer_footer__pQtti{margin-top:var(--spacing-xl);padding:var(--spacing-md) 0;font-size:.875rem}}.Navigation_nav__NZulV{border-bottom:1px solid var(--color-border-light);background-color:hsla(0,0%,100%,.98);position:-webkit-sticky;position:sticky;top:0;z-index:100;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.Navigation_container__ClVVs{max-width:var(--max-width);margin:0 auto;padding:0 var(--spacing-md);display:flex;align-items:center;justify-content:space-between;height:70px}.Navigation_logo__ZzKRw{font-family:var(--font-serif);font-size:1.5rem;font-weight:400;color:var(--color-accent);text-decoration:none;letter-spacing:.08em;transition:opacity .2s ease}.Navigation_logo__ZzKRw:hover{opacity:.8}.Navigation_mobileToggle__Vcym4{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:var(--spacing-xs)}.Navigation_mobileToggle__Vcym4 span{width:24px;height:2px;background-color:var(--color-accent);transition:all .3s ease}.Navigation_navList__9pxBX{display:flex;list-style:none;gap:var(--spacing-lg);align-items:center;margin:0;padding:0}.Navigation_navLink__iFSOa{color:var(--color-text-light);text-decoration:none;font-size:.9375rem;transition:color .2s ease;padding:var(--spacing-xs) 0;position:relative;font-weight:400}.Navigation_navLink__iFSOa:hover{color:var(--color-accent)}.Navigation_navLink__iFSOa.Navigation_active__SA7aP{color:var(--color-accent);font-weight:500}.Navigation_navLink__iFSOa.Navigation_active__SA7aP:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background-color:var(--color-accent)}@media (max-width:767px){.Navigation_nav__NZulV{position:-webkit-sticky;position:sticky;top:0;z-index:200}.Navigation_container__ClVVs{height:56px;padding:0 var(--spacing-sm);min-height:56px}.Navigation_logo__ZzKRw{font-size:1.25rem;letter-spacing:.1em}.Navigation_mobileToggle__Vcym4{display:flex;padding:var(--spacing-xs);min-width:44px;min-height:44px;align-items:center;justify-content:center}.Navigation_mobileToggle__Vcym4 span{width:22px;height:2px}.Navigation_navList__9pxBX{position:fixed;top:56px;left:0;right:0;background-color:hsla(0,0%,100%,.98);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--color-border-light);flex-direction:column;align-items:stretch;gap:0;padding:0;max-height:0;overflow:hidden;transition:max-height .3s ease;box-shadow:0 4px 12px rgba(0,0,0,.08)}.Navigation_navList__9pxBX.Navigation_open__6axri{max-height:calc(100vh - 56px);padding:var(--spacing-xs) 0;overflow-y:auto;-webkit-overflow-scrolling:touch}.Navigation_navList__9pxBX li{border-bottom:1px solid var(--color-border-light)}.Navigation_navList__9pxBX li:last-child{border-bottom:none}.Navigation_navLink__iFSOa{display:block;padding:var(--spacing-sm) var(--spacing-md);font-size:1rem;min-height:44px;display:flex;align-items:center;-webkit-tap-highlight-color:rgba(0,0,0,.1)}.Navigation_navLink__iFSOa.Navigation_active__SA7aP:after{display:none}.Navigation_navLink__iFSOa.Navigation_active__SA7aP{background-color:var(--color-bg-subtle);font-weight:500}.Navigation_navLink__iFSOa:active{background-color:var(--color-bg-alt)}}