/* All visual components are scoped to .yzt-home. No framework or external font. */
html.yzt-home-document{color-scheme:light;scroll-behavior:smooth;scroll-padding-top:100px}
body.yzt-home{margin:0}
.yzt-home{--paper:#faf9f6;--ink:#252b28;--muted:#69736d;--line:#dddfd7;--accent:#a95439;--sea:#397b74;--wash:#f1f2eb;--card:#fffefa;--sans:Inter,"Helvetica Neue","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;--serif:"Noto Serif CJK SC","Songti SC","STSong",serif;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;background:var(--paper);color:var(--ink);font:400 16px/1.7 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:clip;transition:background-color .4s,color .4s}
.yzt-home *,.yzt-home *::before,.yzt-home *::after{box-sizing:border-box}
.yzt-home a{color:inherit;text-decoration:none}
.yzt-home button,.yzt-home input{font:inherit;color:inherit}
.yzt-home button{cursor:pointer}
.yzt-home button{background:none;border:0}
.yzt-home svg{display:block}
.yzt-home [hidden]{display:none!important}
.yzt-home ::selection{background:#d8e9e1;color:#16342d}
.yzt-home :focus-visible{outline:2px solid var(--sea);outline-offset:5px;border-radius:3px}
.yzt-home .container{width:min(1240px,calc(100% - 112px));margin-inline:auto}
.yzt-home .sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.yzt-home .skip-link{position:fixed;left:16px;top:-80px;padding:10px 22px;background:var(--ink);color:var(--paper);z-index:100}
.yzt-home .skip-link:focus{top:10px}
.yzt-home .mono{font-family:var(--mono);font-size:11px;letter-spacing:.09em}
.yzt-home .eyebrow{font-size:12px;letter-spacing:.13em;color:var(--muted)}
.yzt-home .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--sea);margin-right:9px;vertical-align:middle}
.yzt-home .icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.yzt-home .reading-progress{height:2px;position:fixed;inset:0 0 auto;z-index:61;transform:scaleX(0);transform-origin:left;background:var(--sea)}
.yzt-home .site-header{position:sticky;top:0;z-index:50;height:94px;display:flex;align-items:center;border-bottom:1px solid transparent;transition:height .35s,background .35s,border-color .35s;background:var(--paper)}
.yzt-home .site-header.is-scrolled{height:76px;border-color:var(--line);background:color-mix(in srgb,var(--paper) 94%,transparent);backdrop-filter:blur(16px)}
.yzt-home .header-inner{width:calc(100% - 112px);margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.yzt-home .brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.yzt-home .brand-symbol{height:34px;width:34px;color:var(--sea);transition:transform .35s}
.yzt-home .brand:hover .brand-symbol{transform:rotate(-9deg)}
.yzt-home .brand-text{display:flex;flex-direction:column;line-height:1.25}
.yzt-home .brand-title{font-size:20px;font-weight:650;letter-spacing:-.5px}
.yzt-home .brand-sub{font-size:10px;letter-spacing:.13em;margin-top:5px;color:var(--muted)}
.yzt-home .nav{display:flex;align-items:center;gap:29px;font-size:13px}
.yzt-home .nav-item{position:relative;white-space:nowrap}
.yzt-home .nav-link{position:relative;display:flex;align-items:center;gap:6px;padding:10px 0;font-size:13px}
.yzt-home .nav-link::after{content:"";position:absolute;left:0;right:0;bottom:5px;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.yzt-home .nav-link:hover::after,.yzt-home .nav-link.active::after{transform:scaleX(1)}
.yzt-home .chevron{width:11px;height:11px;transition:transform .2s}
.yzt-home [aria-expanded="true"] .chevron{transform:rotate(180deg)}
.yzt-home .dropdown{position:absolute;top:44px;left:-22px;width:223px;padding:15px;background:var(--card);border:1px solid var(--line);border-radius:13px;box-shadow:0 14px 35px #21322e12;animation:menu-in .2s ease both}
.yzt-home .dropdown a{display:flex;padding:10px;border-radius:6px;font-size:13px}
.yzt-home .dropdown a:hover,.yzt-home .dropdown a:focus-visible{background:var(--wash);color:var(--sea)}
.yzt-home .search-open{display:flex;align-items:center;gap:9px;padding:9px 12px!important;border:1px solid var(--line)!important;border-radius:7px;font-size:12px!important}
.yzt-home .search-open kbd{font:10px var(--mono);color:var(--muted);padding:2px 4px;border:1px solid var(--line);border-radius:3px}
.yzt-home .menu-button{display:none;align-items:center;gap:8px;font-size:13px;padding:10px 0}
.yzt-home .hero{padding:75px 0 0;text-align:center;position:relative}
.yzt-home .hero-copy{position:relative;z-index:2}
.yzt-home .hero-label{display:flex;align-items:center;justify-content:center;gap:9px;font-size:12px;color:var(--muted);letter-spacing:.14em}
.yzt-home .hero-label .dot{margin-right:0}
.yzt-home h1{font-size:clamp(42px,5.65vw,79px);line-height:1.2;letter-spacing:-.055em;font-weight:500;margin:26px 0 24px}
.yzt-home h1 .char{display:inline-block;white-space:pre;animation:title-in .72s cubic-bezier(.19,1,.22,1) both;animation-delay:calc(var(--i)*35ms)}
.yzt-home h1 .punct{color:var(--accent)}
.yzt-home .hero-lead{font-size:20px;line-height:1.65;margin:0;font-weight:400;letter-spacing:.02em}
.yzt-home .hero-sub{font-size:13px;line-height:1.9;color:var(--muted);margin:12px 0 0}
.yzt-home .hero-actions{display:flex;justify-content:center;gap:22px;align-items:center;margin-top:30px}
.yzt-home .button{display:inline-flex;align-items:center;justify-content:center;gap:25px;border-radius:6px;min-height:44px;padding:10px 20px;border:1px solid var(--line);font-size:13px;transition:transform .25s,background .25s,box-shadow .25s}
.yzt-home .button.primary{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.yzt-home .button .arr{font-size:18px;display:inline-block;transition:transform .25s}
.yzt-home .button:hover .arr{transform:translateX(4px)}
.yzt-home .button.primary:hover{background:var(--sea);border-color:var(--sea);box-shadow:0 4px 15px #163f2715}
.yzt-home .text-link{font-size:13px;display:inline-flex;align-items:center;gap:12px;border-bottom:1px solid transparent;transition:border-color .2s,color .2s}
.yzt-home .text-link:hover{border-bottom-color:var(--sea);color:var(--sea)}
.yzt-home .hero-side-note{position:absolute;left:-1px;top:270px;writing-mode:vertical-rl;letter-spacing:.15em;font-family:var(--mono);font-size:10px;color:var(--muted);display:none}
.yzt-home .scene-wrap{margin:61px 0 0;position:relative;text-align:left}
.yzt-home .scene{position:relative;overflow:hidden;border-radius:8px;isolation:isolate;background:#86a49a;aspect-ratio:1956/804}
.yzt-home .scene-inner{position:absolute;inset:0;transform:translate3d(0,0,0);will-change:transform}
.yzt-home .scene-image{display:block;width:100%;height:100%;object-fit:contain}
.yzt-home .scene-atmosphere{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.yzt-home .scene-light{position:absolute;inset:0;background:linear-gradient(112deg,transparent 39%,#ffe5a600 52%,#ffe7b040 72%,#ffedbf00 87%);background-size:180% 100%;mix-blend-mode:soft-light;opacity:.5;animation:sun-drift 15s ease-in-out infinite alternate;pointer-events:none}
.yzt-home .sea-glimmer{stroke:#fae4a6;stroke-width:1.8;stroke-linecap:round;fill:none;opacity:0;animation:glimmer 5s ease-in-out infinite;animation-delay:var(--delay)}
.yzt-home .gull{fill:none;stroke:#f5e9cf;stroke-width:2;stroke-linecap:round;animation:gull-glide 18s ease-in-out infinite alternate;animation-delay:var(--delay);transform-box:fill-box;transform-origin:center}
.yzt-home .sky-haze{fill:#fff0cd;opacity:.04;animation:haze-drift 22s ease-in-out infinite alternate}
.yzt-home .scene.is-gusting .gull{animation-duration:2.1s}
.yzt-home .scene.is-gusting .sea-glimmer{animation-duration:1.5s;stroke-width:2.8}
.yzt-home .scene.is-gusting .scene-light{opacity:.95}
.yzt-home .scene-badge{position:absolute;bottom:19px;left:22px;color:#fff8e8;font-size:11px;letter-spacing:.08em;display:flex;align-items:center;gap:8px;text-shadow:0 1px 6px #071e1e80}
.yzt-home .scene-badge::before{content:"";width:5px;height:5px;border:1px solid currentColor;border-radius:50%}
.yzt-home .scene-caption{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:13px;font-size:11px;letter-spacing:.035em;color:var(--muted)}
.yzt-home .scene-caption-left{display:flex;align-items:center;gap:12px}
.yzt-home .scene-controls{display:flex;align-items:center;gap:18px}
.yzt-home .scene-controls button{font-size:11px;padding:3px 0;color:var(--muted);transition:color .2s}
.yzt-home .scene-controls button:hover{color:var(--sea)}
.yzt-home .postcard-stamp{display:none}
.yzt-home .hero-bottom{display:flex;justify-content:space-between;align-items:center;padding:36px 0 45px;gap:20px}
.yzt-home .hero-bottom p{margin:0;color:var(--muted);font-size:12px}
.yzt-home .hero-bottom .scroll-hint{font:10px var(--mono);letter-spacing:.15em;display:flex;align-items:center;gap:17px}
.yzt-home .scroll-line{height:27px;position:relative;width:1px;background:var(--line);overflow:hidden}
.yzt-home .scroll-line:after{content:"";position:absolute;inset:0;background:var(--sea);animation:scroll-line 2.2s ease-in-out infinite}
.yzt-home section{scroll-margin-top:96px}
.yzt-home .journal{border-top:1px solid var(--line);padding:69px 0 55px}
.yzt-home .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:33px}
.yzt-home .section-head h2{font-size:32px;font-weight:500;letter-spacing:-.05em;line-height:1.35;margin:9px 0 0}
.yzt-home .section-head .section-note{font-size:12px;color:var(--muted);margin:0;text-align:right}
.yzt-home .section-number{color:var(--accent);font:10px var(--mono);letter-spacing:.12em}
.yzt-home .journal-filter{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-bottom:25px;min-height:30px;font-size:11px}
.yzt-home .filter-btn{padding:5px 12px;border:1px solid var(--line);border-radius:30px;font-size:11px;color:var(--muted)}
.yzt-home .filter-btn[aria-pressed="true"]{color:var(--paper);background:var(--ink);border-color:var(--ink)}
.yzt-home .current-filter{color:var(--sea);margin-left:10px;font-size:11px}
.yzt-home .post-row{display:grid;grid-template-columns:142px 1fr 110px 38px;gap:24px;align-items:center;padding:27px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:relative;transition:padding .25s,background .25s}
.yzt-home .post-row:hover{padding-left:16px;padding-right:16px;background:var(--wash)}
.yzt-home .post-date{font:12px var(--mono);color:var(--muted)}
.yzt-home .post-title{font-size:20px;font-weight:500;letter-spacing:-.03em;margin:0 0 7px}
.yzt-home .post-excerpt{font-size:12px;color:var(--muted);margin:0}
.yzt-home .post-tag{font-size:11px;text-align:right;color:var(--muted)}
.yzt-home .post-arrow{display:flex;width:35px;height:35px;justify-content:center;align-items:center;border:1px solid var(--line);border-radius:50%;transition:color .2s,background .2s,transform .2s;font-size:19px}
.yzt-home .post-row:hover .post-arrow{background:var(--sea);border-color:var(--sea);color:white;transform:rotate(45deg)}
.yzt-home .journal-foot{display:flex;justify-content:space-between;align-items:center;margin-top:20px;font-size:11px;color:var(--muted)}
.yzt-home .empty-posts{min-height:132px;border-block:1px solid var(--line);display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:9px}
.yzt-home .empty-posts p{margin:0;font-size:15px}
.yzt-home .empty-posts span{font-size:12px;color:var(--muted)}
.yzt-home .knowledge{padding:70px 0 45px;position:relative}
.yzt-home .knowledge-heading{text-align:center;margin-bottom:28px}
.yzt-home .knowledge-heading h2{font-size:40px;font-weight:450;letter-spacing:-.05em;line-height:1.4;margin:14px 0}
.yzt-home .knowledge-heading p{font-size:13px;line-height:1.9;color:var(--muted);margin:0}
.yzt-home .knowledge-eyebrow{font:11px var(--mono);letter-spacing:.15em;color:var(--accent)}
.yzt-home .graph-shell{position:relative}
.yzt-home .graph-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:10px;color:var(--muted);padding:14px 0}
.yzt-home .graph-hint{display:flex;align-items:center;gap:8px}
.yzt-home .graph-hint .icon{width:14px;height:14px}
.yzt-home .graph-tools{display:flex;align-items:center;gap:6px}
.yzt-home .graph-tools button{border:1px solid var(--line);min-width:30px;height:30px;display:flex;align-items:center;justify-content:center;font-size:12px;border-radius:5px;padding:0 9px}
.yzt-home .graph-tools button:hover{border-color:var(--sea);color:var(--sea)}
.yzt-home .graph-tools button[aria-pressed="true"]{background:var(--wash);border-color:var(--sea);color:var(--sea)}
.yzt-home .graph-viewport{overflow:hidden;position:relative;border-radius:8px}
.yzt-home .knowledge-svg{width:100%;height:auto;display:block;touch-action:pan-y;cursor:grab;user-select:none;-webkit-user-select:none}
.yzt-home .knowledge-svg.is-dragging{cursor:grabbing}
.yzt-home .node{cursor:grab;outline:0;touch-action:none;transition:opacity .23s}
.yzt-home .node-bg{fill:var(--paper);stroke:none;opacity:.94;transition:fill .2s,stroke .2s}
.yzt-home .node text{fill:var(--ink);font-family:var(--sans);dominant-baseline:middle;text-anchor:middle;pointer-events:none;transition:fill .2s}
.yzt-home .node.core text{font-size:30px;font-weight:450;letter-spacing:-1px}
.yzt-home .node.group text{font-size:22px;font-weight:550;letter-spacing:-.3px}
.yzt-home .node.category text{font-size:17px;fill:#58655e}
.yzt-home .node.tag text{font-size:13px;fill:#6c776f}
.yzt-home .node-dot{fill:var(--sea);opacity:0;transition:opacity .2s}
.yzt-home .node.category .node-dot{opacity:.6}
.yzt-home .node:hover text,.yzt-home .node:focus-visible text,.yzt-home .node.is-selected text{fill:var(--sea)}
.yzt-home .node:hover .node-bg,.yzt-home .node:focus-visible .node-bg,.yzt-home .node.is-selected .node-bg{fill:var(--wash);stroke:var(--line);stroke-width:1}
.yzt-home .node.is-dim{opacity:.25}
.yzt-home .node.is-highlight .node-dot{opacity:1}
.yzt-home .node.is-highlight text{fill:var(--sea)}
.yzt-home .graph-edge{stroke:#9caaa0;stroke-width:1;fill:none;opacity:.30;transition:opacity .25s,stroke .25s}
.yzt-home .graph-edge.cross{stroke:var(--sea);stroke-dasharray:4 7;opacity:.18}
.yzt-home .graph-edge.is-highlight{stroke:var(--sea);opacity:.75;stroke-width:1.3}
.yzt-home .graph-edge.is-dim{opacity:.07}
.yzt-home .graph-pulse{fill:var(--sea);opacity:0;pointer-events:none}
.yzt-home .graph-shell.is-inview .graph-pulse{opacity:.5}
.yzt-home .cross-label{font:12px var(--sans);fill:var(--sea);paint-order:stroke;stroke:var(--paper);stroke-width:7;opacity:0;pointer-events:none}
.yzt-home .cross-label.is-highlight{opacity:1}
.yzt-home .graph-legend{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:28px;padding:5px 0 17px;font-size:10px;color:var(--muted)}
.yzt-home .legend-item{display:flex;align-items:center;gap:7px}
.yzt-home .legend-item i{width:23px;border-top:1px solid #93a096;display:inline-block}
.yzt-home .legend-item.cross i{border-top-style:dashed;border-color:var(--sea)}
.yzt-home .relation-switches{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:7px 0 24px}
.yzt-home .relation-switches button{font-size:11px;border:1px solid var(--line);padding:6px 13px;border-radius:30px;color:var(--muted);transition:background .2s,color .2s}
.yzt-home .relation-switches button:hover,.yzt-home .relation-switches button[aria-pressed="true"]{background:var(--wash);color:var(--sea);border-color:var(--sea)}
.yzt-home .topic-detail{display:grid;grid-template-columns:190px 1fr auto;align-items:center;gap:25px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0;min-height:129px}
.yzt-home .topic-detail .detail-kicker{font:10px var(--mono);color:var(--muted);letter-spacing:.08em}
.yzt-home .topic-detail h3{font-size:18px;font-weight:500;line-height:1.4;margin:7px 0 0}
.yzt-home .topic-detail p{margin:0;font-size:12px;line-height:1.9;color:var(--muted);max-width:600px}
.yzt-home .detail-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px;font-size:10px;color:var(--sea)}
.yzt-home .detail-link{font-size:12px;display:inline-flex;gap:12px;white-space:nowrap;border-bottom:1px solid var(--line);padding:5px 0}
.yzt-home .detail-link:hover{color:var(--sea);border-color:var(--sea)}
.yzt-home .topic-directory{margin-top:27px;display:grid;grid-template-columns:1fr 1fr;gap:38px}
.yzt-home .directory-group{display:flex;align-items:flex-start;gap:16px;font-size:11px}
.yzt-home .directory-group>span{color:var(--muted);white-space:nowrap;padding:4px 0;font-size:10px}
.yzt-home .directory-links{display:flex;flex-wrap:wrap;gap:3px 13px}
.yzt-home .directory-links a{padding:4px 0;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.yzt-home .directory-links a:hover{color:var(--sea);border-color:var(--sea)}
.yzt-home .graph-mobile-list{display:none;grid-template-columns:1fr 1fr;gap:10px;padding:12px 0 25px}
.yzt-home .mobile-topic-group{border:1px solid var(--line);border-radius:8px;padding:18px 14px}
.yzt-home .mobile-topic-group h3{font-size:14px;font-weight:500;margin:0 0 9px}
.yzt-home .mobile-topic-group button{display:block;font-size:12px;line-height:1.8;padding:5px 0;color:var(--muted);text-align:left}
.yzt-home .mobile-topic-group button:hover{color:var(--sea)}
.yzt-home .mobile-graph-switch{display:none;font-size:11px;border-bottom:1px solid var(--line);padding:5px 0;margin:15px auto}
.yzt-home .about{padding:100px 0 70px;text-align:center;position:relative}
.yzt-home .about h2{font-size:40px;font-weight:450;line-height:1.4;letter-spacing:-.05em;margin:15px 0 22px}
.yzt-home .about-subtitle{font-size:12px;color:var(--sea);letter-spacing:.08em;margin:0 0 36px}
.yzt-home .about-copy{max-width:845px;margin:auto;font-size:17px;line-height:2.15;color:#435149}
.yzt-home .about-copy p{margin:0 0 20px;text-wrap:pretty}
.yzt-home .about-copy strong{font-weight:500;color:var(--ink)}
.yzt-home .about-copy .personal-detail{font-size:14px;color:var(--muted)}
.yzt-home .about-principle{font-size:17px!important;color:var(--ink)!important;margin-top:29px!important}
.yzt-home .about-principle span{position:relative;z-index:0;white-space:nowrap}
.yzt-home .about-principle span:after{content:"";position:absolute;left:-2px;right:-2px;bottom:-3px;height:8px;z-index:-1;background:#dbe6d9;transform:rotate(-1deg)}
.yzt-home .about-art{display:flex;flex-direction:column;align-items:center;margin:24px auto 0;width:290px;max-width:100%;color:var(--ink)}
.yzt-home .doodle{width:270px;height:198px;overflow:visible}
.yzt-home .doodle .line{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.yzt-home .doodle .paper{fill:var(--paper);stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.yzt-home .doodle .color-fill{fill:var(--accent);stroke:none}
.yzt-home .doodle .soft-fill{fill:#dde9dd;stroke:none}
.yzt-home .doodle .green-stroke{stroke:var(--sea)}
.yzt-home .doodle .plane-float{transform-box:fill-box;transform-origin:center;animation:plane-float 5s ease-in-out infinite}
.yzt-home .doodle .plane-track{stroke-dasharray:3 5;stroke:var(--sea);opacity:.45}
.yzt-home .doodle .pen-wiggle{transform-origin:144px 116px;animation:pen-write 4.8s ease-in-out infinite}
.yzt-home .doodle .write-line{stroke-dasharray:55;stroke-dashoffset:55;animation:write-line 4.8s ease-in-out infinite}
.yzt-home .doodle .page-turn{transform-origin:131px 138px;animation:page-turn 7s ease-in-out infinite}
.yzt-home .doodle .spark{transform-box:fill-box;transform-origin:center;animation:spark 3s ease-in-out infinite;animation-delay:var(--delay)}
.yzt-home .doodle .steam{animation:steam 3s ease-in-out infinite;animation-delay:var(--delay)}
.yzt-home .doodle .leaf-sway{transform-origin:231px 172px;animation:leaf-sway 5s ease-in-out infinite}
.yzt-home .doodle .packet{stroke-dasharray:4 80;animation:packet 3s linear infinite}
.yzt-home .doodle .terminal-cursor{animation:blink 1.3s steps(2,end) infinite}
.yzt-home .doodle .doodle-b,.yzt-home .doodle .doodle-c{display:none}
.yzt-home .about-art.is-launched .plane-flight{animation:plane-launch 2.3s cubic-bezier(.3,.1,.35,1) both}
.yzt-home .about-art.is-launched .leaf-sway{animation-duration:.65s}
.yzt-home .about-art.is-launched .packet{animation-duration:.55s}
.yzt-home .doodle-button{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:9px;padding:8px 0;border-bottom:1px solid transparent}
.yzt-home .doodle-button:hover{border-color:var(--line);color:var(--sea)}
.yzt-home .doodle-caption{font-size:10px;color:var(--muted);margin:5px 0 0;letter-spacing:.1em}
.yzt-home .footer{padding:31px 0 88px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:25px;font-size:10px;color:var(--muted)}
.yzt-home .footer-left{display:flex;gap:22px;align-items:center}
.yzt-home .footer .footer-thought{color:var(--ink)}
.yzt-home .preview-dock{position:fixed;bottom:18px;right:24px;display:flex;gap:5px;align-items:center;padding:6px 8px;background:color-mix(in srgb,var(--paper) 94%,transparent);border:1px solid var(--line);border-radius:12px;box-shadow:0 5px 20px #1b342a0d;backdrop-filter:blur(12px);z-index:45;font:11px var(--sans)}
.yzt-home .preview-dock .dock-label{padding:0 5px;font-size:9px;color:var(--muted);letter-spacing:.05em}
.yzt-home .preview-dock button{border-radius:6px;min-width:30px;height:29px;display:flex;align-items:center;justify-content:center;font-size:11px;padding:0 8px}
.yzt-home .preview-dock button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.yzt-home .preview-dock .dock-divider{height:14px;width:1px;background:var(--line);margin:0 3px}
.yzt-home .preview-dock .motion-toggle{color:var(--muted);gap:7px;padding-inline:7px}
.yzt-home .preview-dock .motion-dot{height:5px;width:5px;border-radius:50%;background:var(--sea)}
.yzt-home .preview-dock .info-toggle{border:1px solid var(--line);border-radius:50%;min-width:21px;width:21px;height:21px;padding:0;margin-left:3px;font:italic 12px Georgia,serif}
.yzt-home .toast{position:fixed;left:50%;bottom:85px;transform:translateX(-50%) translateY(15px);background:var(--ink);color:var(--paper);font-size:12px;padding:11px 19px;border-radius:30px;z-index:100;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;max-width:calc(100% - 35px);text-align:center}
.yzt-home .toast.is-visible{opacity:1;transform:translateX(-50%) translateY(0)}
.yzt-home dialog{background:var(--paper);color:var(--ink);border:1px solid var(--line);border-radius:16px;max-height:calc(100vh - 70px);width:min(670px,calc(100% - 32px));padding:32px;box-shadow:0 25px 100px #16332c25;overscroll-behavior:contain}
.yzt-home dialog::backdrop{background:#12231d50;backdrop-filter:blur(5px)}
.yzt-home dialog .dialog-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px}
.yzt-home dialog h2{font-size:24px;font-weight:500;margin:0;letter-spacing:-.035em}
.yzt-home dialog .dialog-close{font-size:20px;border:1px solid var(--line);height:31px;width:31px;border-radius:50%;line-height:1}
.yzt-home .search-field{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--ink);padding:14px 0}
.yzt-home .search-field input{background:none;border:none;outline:none;width:100%;min-width:0;font-size:18px}
.yzt-home .search-field input::placeholder{color:var(--muted)}
.yzt-home .search-results{margin-top:20px;display:flex;flex-direction:column;gap:7px;max-height:48vh;overflow:auto}
.yzt-home .search-result{padding:13px 12px;text-align:left;border-radius:7px;display:flex;justify-content:space-between;gap:15px;align-items:center}
.yzt-home .search-result:hover{background:var(--wash)}
.yzt-home .search-result b{font-size:14px;font-weight:500;display:block}
.yzt-home .search-result span{font-size:11px;color:var(--muted)}
.yzt-home .search-note{font-size:10px;color:var(--muted);margin-top:21px}
.yzt-home .info-dialog p{font-size:13px;color:var(--muted);line-height:1.9}
.yzt-home .info-dialog code{font:12px var(--mono);background:var(--wash);padding:2px 4px}
.yzt-home .lightbox{width:min(1500px,calc(100% - 30px));padding:18px}
.yzt-home .lightbox img{display:block;width:100%;height:auto;max-height:75vh;object-fit:contain;border-radius:6px}
.yzt-home .lightbox .dialog-top{margin-bottom:13px}
.yzt-home .lightbox h2{font-size:14px}
.yzt-home .lightbox p{font-size:11px;color:var(--muted);margin:12px 0 0}
.yzt-home.has-js .reveal{opacity:0;transform:translateY(22px);transition:opacity .75s cubic-bezier(.2,.7,.2,1),transform .75s cubic-bezier(.2,.7,.2,1)}
.yzt-home.has-js .reveal.is-revealed{opacity:1;transform:none}
.yzt-home .ambient:not(.is-inview) *,.yzt-home .ambient:not(.is-inview){animation-play-state:paused!important}
.yzt-home[data-motion="off"] *,.yzt-home[data-motion="off"] *::before,.yzt-home[data-motion="off"] *::after{animation:none!important;transition-duration:.01ms!important}
.yzt-home[data-motion="off"] .char,.yzt-home[data-motion="off"] .reveal{opacity:1!important;transform:none!important}
.yzt-home[data-motion="off"] .scene-inner{transform:none!important}
.yzt-home[data-motion="off"] .sea-glimmer{opacity:.25}
.yzt-home[data-motion="off"] .write-line{stroke-dashoffset:0}
.yzt-home[data-motion="off"] .motion-dot{background:var(--muted)}
.yzt-home.is-hidden *,.yzt-home.is-hidden *::before,.yzt-home.is-hidden *::after{animation-play-state:paused!important}
/* B — editorial notebook: different composition, margins and hierarchy. */
.yzt-home[data-style="b"]{--paper:#f6f0e4;--ink:#2f3931;--muted:#707767;--line:#d8d7c7;--accent:#a5553d;--sea:#597764;--wash:#e9ebdd;--card:#fffaf0}
.yzt-home[data-style="b"] .site-header{height:102px;background:var(--paper)}
.yzt-home[data-style="b"] .site-header.is-scrolled{height:76px}
.yzt-home[data-style="b"] .brand-symbol{color:var(--accent)}
.yzt-home[data-style="b"] .brand-title{font-family:var(--serif);font-weight:600}
.yzt-home[data-style="b"] .container{width:min(1270px,calc(100% - 112px))}
.yzt-home[data-style="b"] .hero{display:grid;grid-template-columns:.9fr 1.3fr;column-gap:58px;align-items:center;padding-top:100px;text-align:left;padding-bottom:6px}
.yzt-home[data-style="b"] .hero-copy{padding-bottom:52px}
.yzt-home[data-style="b"] .hero-label{justify-content:flex-start;color:var(--accent);letter-spacing:.12em}
.yzt-home[data-style="b"] h1{font-family:var(--serif);font-size:clamp(40px,4.3vw,64px);line-height:1.45;letter-spacing:-.045em;margin:24px 0 21px;font-weight:500}
.yzt-home[data-style="b"] .hero-lead{font-size:16px}
.yzt-home[data-style="b"] .hero-sub{max-width:330px;font-size:12px;line-height:2}
.yzt-home[data-style="b"] .hero-actions{justify-content:flex-start;margin-top:32px;gap:19px}
.yzt-home[data-style="b"] .button{border-radius:2px}
.yzt-home[data-style="b"] .scene-wrap{margin:0;transform:rotate(1.3deg);padding:12px 12px 14px;background:#fcf8ef;border:1px solid #ddd7c8;box-shadow:9px 15px 0 #e7e5d5,0 13px 26px #4b443412;transition:transform .5s;z-index:1}
.yzt-home[data-style="b"] .scene-wrap:hover{transform:rotate(0)}
.yzt-home[data-style="b"] .scene{border-radius:0;aspect-ratio:1956/804}
.yzt-home[data-style="b"] .scene-badge{left:13px;bottom:12px;font-size:9px}
.yzt-home[data-style="b"] .scene-caption{flex-wrap:wrap;gap:8px;padding:2px 5px;font-size:10px}
.yzt-home[data-style="b"] .scene-controls{gap:13px}
.yzt-home[data-style="b"] .scene-controls button{font-size:10px}
.yzt-home[data-style="b"] .postcard-stamp{display:block;position:absolute;right:24px;top:-55px;width:84px;height:84px;transform:rotate(13deg);color:var(--accent);z-index:3;opacity:.7}
.yzt-home[data-style="b"] .hero-bottom{grid-column:1/-1;margin-top:48px;padding-bottom:56px}
.yzt-home[data-style="b"] .hero-bottom p{font-family:var(--serif);font-size:14px;font-style:italic;color:var(--sea)}
.yzt-home[data-style="b"] .section-head h2{font-family:var(--serif);font-weight:500}
.yzt-home[data-style="b"] .journal{padding-top:49px}
.yzt-home[data-style="b"] .journal-body{display:grid;grid-template-columns:210px 1fr;gap:18px 24px}
.yzt-home[data-style="b"] .journal-filter{grid-column:1;grid-row:1;align-content:start;align-items:start;justify-content:flex-start;gap:9px}
.yzt-home[data-style="b"] .posts-container{grid-column:2;grid-row:1}
.yzt-home[data-style="b"] .post-row{grid-template-columns:103px 1fr 36px;gap:15px}
.yzt-home[data-style="b"] .post-tag{display:none}
.yzt-home[data-style="b"] .post-title{font-family:var(--serif);font-size:21px}
.yzt-home[data-style="b"] .journal-foot{grid-column:2;margin-top:0}
.yzt-home[data-style="b"] .knowledge{display:grid;grid-template-columns:225px 1fr;gap:0 28px;padding-top:85px}
.yzt-home[data-style="b"] .knowledge-heading{text-align:left;padding-top:30px}
.yzt-home[data-style="b"] .knowledge-heading h2{font-family:var(--serif);font-size:32px;line-height:1.65;max-width:none;margin:17px 0 22px}
.yzt-home[data-style="b"] .knowledge-heading p{font-size:12px;line-height:2;max-width:195px}
.yzt-home[data-style="b"] .graph-shell{grid-column:2;padding:10px 19px 0;border:1px solid var(--line);border-radius:2px;background-image:radial-gradient(#7e8a671a .65px,transparent .65px);background-size:17px 17px}
.yzt-home[data-style="b"] .relation-switches{gap:8px;margin-top:5px}
.yzt-home[data-style="b"] .relation-switches button{font-size:10px;padding:5px 9px}
.yzt-home[data-style="b"] .topic-detail{grid-column:2;grid-template-columns:155px 1fr;min-height:147px;margin-top:25px;gap:12px 25px;padding:22px 0}
.yzt-home[data-style="b"] .topic-detail .detail-link{grid-column:2;width:fit-content}
.yzt-home[data-style="b"] .topic-directory{grid-column:1/-1;margin-top:30px}
.yzt-home[data-style="b"] .about{display:grid;grid-template-columns:1.15fr .85fr;gap:0 70px;text-align:left;padding-top:95px;padding-bottom:91px}
.yzt-home[data-style="b"] .about-heading{grid-column:1}
.yzt-home[data-style="b"] .about h2{font-family:var(--serif);font-size:35px}
.yzt-home[data-style="b"] .about-subtitle{margin-bottom:27px}
.yzt-home[data-style="b"] .about-copy{grid-column:1;font-size:16px;line-height:2;max-width:none}
.yzt-home[data-style="b"] .about-copy .personal-detail{font-size:13px}
.yzt-home[data-style="b"] .about-principle{font-size:16px!important}
.yzt-home[data-style="b"] .about-art{grid-column:2;grid-row:1/3;align-self:center;width:100%;background:var(--wash);border-radius:50% 48% 46% 49%;max-width:390px;min-height:365px;justify-content:center;margin:0 auto;transform:rotate(-3deg)}
.yzt-home[data-style="b"] .doodle{width:290px;height:221px}
.yzt-home[data-style="b"] .doodle-a,.yzt-home[data-style="b"] .doodle-c{display:none}
.yzt-home[data-style="b"] .doodle-b{display:block}
.yzt-home[data-style="b"] .doodle .paper{fill:#fcf8ed}
/* C — light technical blueprint, never a data dashboard. */
.yzt-home[data-style="c"]{--paper:#f3f6f5;--ink:#163d3b;--muted:#617776;--line:#d4dfdc;--accent:#ba583a;--sea:#297c76;--wash:#e6efea;--card:#fcfefd}
.yzt-home[data-style="c"] .brand-symbol{border:1px solid var(--line);padding:4px;border-radius:7px;width:40px;height:40px}
.yzt-home[data-style="c"] .brand-title{font-family:var(--mono);font-size:19px}
.yzt-home[data-style="c"] .hero{padding-top:57px;text-align:left;display:grid;grid-template-columns:1fr 280px;position:relative}
.yzt-home[data-style="c"] .hero::before{content:"";position:absolute;inset:20px -20px 98px;background-image:linear-gradient(#7490840d 1px,transparent 1px),linear-gradient(90deg,#7490840d 1px,transparent 1px);background-size:40px 40px;mask-image:linear-gradient(black,transparent 95%);pointer-events:none}
.yzt-home[data-style="c"] .hero-copy{grid-column:1/-1;display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:0 80px}
.yzt-home[data-style="c"] .hero-label{grid-column:1/-1;justify-content:flex-start;font-family:var(--mono);font-size:11px}
.yzt-home[data-style="c"] h1{grid-column:1;grid-row:2/5;font-size:clamp(46px,4.55vw,68px);line-height:1.32;margin:22px 0 20px;font-weight:500}
.yzt-home[data-style="c"] .hero-lead{grid-column:2;margin-top:26px;font-size:15px;font-family:var(--mono);color:var(--sea)}
.yzt-home[data-style="c"] .hero-sub{grid-column:2;font-size:13px;max-width:365px;margin-top:9px;line-height:1.95}
.yzt-home[data-style="c"] .hero-actions{grid-column:2;justify-content:flex-start;align-self:start;margin-top:22px}
.yzt-home[data-style="c"] .button{border-radius:0}
.yzt-home[data-style="c"] .scene-wrap{grid-column:1/-1;margin-top:35px;border:1px solid var(--line);background:var(--card);padding:8px;position:relative}
.yzt-home[data-style="c"] .scene-wrap::before,.yzt-home[data-style="c"] .scene-wrap::after{content:"+";position:absolute;color:var(--sea);font:16px var(--mono);top:-9px;left:-6px;z-index:4}
.yzt-home[data-style="c"] .scene-wrap::after{inset:auto -6px -9px auto}
.yzt-home[data-style="c"] .scene{border-radius:0}
.yzt-home[data-style="c"] .scene-caption{padding:0 10px 4px;font-family:var(--mono);font-size:10px}
.yzt-home[data-style="c"] .hero-bottom{grid-column:1/-1;padding-bottom:45px}
.yzt-home[data-style="c"] .section-head{align-items:center}
.yzt-home[data-style="c"] .section-head h2{font-size:30px}
.yzt-home[data-style="c"] .journal{padding-top:46px}
.yzt-home[data-style="c"] .post-row{background:var(--card);border:1px solid var(--line);padding:25px}
.yzt-home[data-style="c"] .post-row:hover{background:var(--wash);padding-left:32px}
.yzt-home[data-style="c"] .post-title{font-size:20px}
.yzt-home[data-style="c"] .knowledge{padding-top:65px}
.yzt-home[data-style="c"] .knowledge-heading{text-align:left;display:grid;grid-template-columns:1fr 390px;gap:0 45px;align-items:center;margin-bottom:25px}
.yzt-home[data-style="c"] .knowledge-eyebrow{grid-column:1/-1}
.yzt-home[data-style="c"] .knowledge-heading h2{font-size:36px;grid-column:1;margin-bottom:0}
.yzt-home[data-style="c"] .knowledge-heading p{grid-column:2;font-size:12px;margin-top:14px}
.yzt-home[data-style="c"] .graph-shell{border:1px solid var(--line);padding:5px 25px 0;border-radius:3px;background-color:#fbfdfb;background-image:linear-gradient(#4b897611 1px,transparent 1px),linear-gradient(90deg,#4b897611 1px,transparent 1px);background-size:30px 30px}
.yzt-home[data-style="c"] .node-bg{fill:#fbfdfb}
.yzt-home[data-style="c"] .node.group .node-bg{stroke:var(--line);stroke-width:1;rx:3}
.yzt-home[data-style="c"] .node.core .node-bg{fill:var(--ink)}
.yzt-home[data-style="c"] .node.core text{fill:#f6faf7;font-size:26px}
.yzt-home[data-style="c"] .node.core .node-dot{fill:#91bdb0}
.yzt-home[data-style="c"] .graph-edge{stroke:#638f7e;opacity:.4}
.yzt-home[data-style="c"] .topic-detail{margin-top:22px;border:1px solid var(--line);padding:24px;min-height:130px;background:var(--card);grid-template-columns:190px 1fr auto}
.yzt-home[data-style="c"] .about{display:grid;grid-template-columns:260px 1fr;gap:0 70px;text-align:left;padding:104px 0 86px}
.yzt-home[data-style="c"] .about-heading{grid-column:1;grid-row:1}
.yzt-home[data-style="c"] .about h2{font-size:34px}
.yzt-home .about-line{white-space:nowrap}
.yzt-home[data-style="c"] .about-line{display:block}
.yzt-home[data-style="c"] .about-subtitle{font-size:12px;line-height:1.9}
.yzt-home[data-style="c"] .about-copy{grid-column:2;grid-row:1/3;max-width:none;padding-top:10px;font-size:16px;line-height:2.15}
.yzt-home[data-style="c"] .about-art{grid-column:1;grid-row:2;width:250px;margin:0}
.yzt-home[data-style="c"] .doodle{width:250px;height:184px}
.yzt-home[data-style="c"] .doodle-a,.yzt-home[data-style="c"] .doodle-b{display:none}
.yzt-home[data-style="c"] .doodle-c{display:block}
.yzt-home[data-style="c"] .about-principle span:after{background:#dae8df}
/* Tablet */
@media(max-width:1100px){
 .yzt-home .container,.yzt-home[data-style="b"] .container{width:calc(100% - 64px)}
 .yzt-home .header-inner{width:calc(100% - 64px)}
 .yzt-home .nav{gap:20px}
 .yzt-home .search-open kbd{display:none}
 .yzt-home[data-style="b"] .hero{column-gap:30px;padding-top:72px}
 .yzt-home[data-style="b"] h1{font-size:46px}
 .yzt-home[data-style="b"] .hero-lead{font-size:14px}
 .yzt-home[data-style="b"] .hero-actions{flex-wrap:wrap;gap:14px}
 .yzt-home[data-style="b"] .knowledge{grid-template-columns:180px 1fr;gap:0 15px}
 .yzt-home[data-style="b"] .knowledge-heading h2{font-size:28px}
 .yzt-home[data-style="b"] .graph-shell{padding-inline:8px}
 .yzt-home[data-style="b"] .graph-hint{font-size:9px}
 .yzt-home[data-style="b"] .graph-tools{gap:3px}
 .yzt-home[data-style="b"] .graph-tools button{min-width:25px;padding-inline:6px}
 .yzt-home[data-style="b"] .about{gap:0 45px}
 .yzt-home[data-style="b"] .about-art{min-height:315px}
 .yzt-home[data-style="c"] .hero-copy{gap:0 30px}
 .yzt-home[data-style="c"] .about{gap:0 37px;grid-template-columns:245px 1fr}
 .yzt-home .topic-detail{grid-template-columns:165px 1fr auto;gap:18px}
 .yzt-home[data-style="c"] .topic-detail{grid-template-columns:165px 1fr auto}
 .yzt-home .topic-directory{grid-template-columns:1fr;gap:15px}
}
/* Compact tablet navigation: do not force the full desktop menu into 768px. */
@media(min-width:761px) and (max-width:980px){
 .yzt-home .menu-button{display:flex}
 .yzt-home .nav{display:none;position:absolute;top:100%;left:0;right:0;padding:15px 32px 24px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 16px 20px #1f36260a;gap:3px;max-height:calc(100svh - 100px);overflow:auto}
 .yzt-home .nav.is-open{display:flex;flex-direction:column;align-items:stretch}
 .yzt-home .nav-link{padding:11px 3px;font-size:14px;justify-content:space-between;width:100%}
 .yzt-home .nav .nav-item{width:100%}
 .yzt-home .dropdown{position:static;width:100%;box-shadow:none;border-radius:7px;margin:3px 0 10px;padding:8px;background:var(--wash)}
 .yzt-home .search-open{justify-content:center;margin-top:8px;min-height:43px}
 .yzt-home[data-style="b"] .knowledge{display:block}
 .yzt-home[data-style="b"] .knowledge-heading{max-width:560px;margin:0 0 26px}
 .yzt-home[data-style="b"] .knowledge-heading h2{font-size:34px}
 .yzt-home[data-style="b"] .graph-hint{font-size:11px}
}
/* Phone: readable text first, interactive graph is optional. */
@media(max-width:760px){
 html.yzt-home-document{scroll-padding-top:80px}
 .yzt-home{font-size:14px}
 .yzt-home .container,.yzt-home[data-style="b"] .container{width:calc(100% - 40px)}
 .yzt-home .header-inner{width:calc(100% - 40px);gap:16px}
 .yzt-home .site-header,.yzt-home[data-style="b"] .site-header{height:78px}
 .yzt-home .site-header.is-scrolled,.yzt-home[data-style="b"] .site-header.is-scrolled{height:66px}
 .yzt-home .brand-title{font-size:18px}
 .yzt-home .brand-sub{font-size:9px;letter-spacing:.1em}
 .yzt-home .brand-symbol{width:28px;height:28px}
 .yzt-home .brand{gap:9px}
 .yzt-home .menu-button{display:flex}
 .yzt-home .nav{display:none;position:absolute;top:100%;left:0;right:0;padding:15px 20px 24px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 16px 20px #1f36260a;gap:3px;font-size:14px;max-height:calc(100svh - 85px);overflow:auto}
 .yzt-home .nav.is-open{display:flex;flex-direction:column;align-items:stretch}
 .yzt-home .nav-link{padding:11px 3px;font-size:14px;justify-content:space-between;width:100%}
 .yzt-home .nav .nav-item{width:100%}
 .yzt-home .dropdown{position:static;width:100%;box-shadow:none;border-radius:7px;margin:3px 0 10px;padding:8px;background:var(--wash)}
 .yzt-home .dropdown a{font-size:13px;padding:9px}
 .yzt-home .search-open{justify-content:center;margin-top:8px;min-height:43px}
 .yzt-home .hero{padding-top:57px}
 .yzt-home .hero-label{font-size:10px;letter-spacing:.1em}
 .yzt-home h1{font-size:40px;margin-top:23px;margin-bottom:18px;letter-spacing:-.06em;line-height:1.3}
 .yzt-home .hero-lead{font-size:16px;line-height:1.9;max-width:285px;margin-inline:auto}
 .yzt-home .hero-sub{font-size:11px;max-width:285px;margin:10px auto 0}
 .yzt-home .hero-actions{margin-top:24px;gap:19px}
 .yzt-home .button{font-size:12px;gap:18px;padding:9px 16px;min-height:44px}
 .yzt-home .text-link{font-size:12px;gap:8px}
 .yzt-home .scene-wrap{margin-top:37px}
 .yzt-home .scene{border-radius:5px}
 .yzt-home .scene-badge{bottom:10px;left:11px;font-size:8px;gap:5px}
 .yzt-home .scene-badge:before{height:4px;width:4px}
 .yzt-home .scene-caption{font-size:9px;gap:8px;align-items:start;margin-top:10px}
 .yzt-home .scene-caption-left .mono{display:none}
 .yzt-home .scene-controls{gap:12px}
 .yzt-home .scene-controls button{font-size:9px;padding:0}
 .yzt-home .hero-bottom{padding:24px 0 31px;gap:14px}
 .yzt-home .hero-bottom p{font-size:10px;max-width:235px;line-height:1.9}
 .yzt-home .hero-bottom .scroll-hint{font-size:8px;gap:9px}
 .yzt-home .scroll-line{height:21px}
 .yzt-home .journal{padding:35px 0 20px}
 .yzt-home .section-head{gap:15px;margin-bottom:24px;align-items:end}
 .yzt-home .section-head h2{font-size:26px}
 .yzt-home .section-head .section-note{font-size:10px;max-width:112px}
 .yzt-home .section-number{font-size:9px}
 .yzt-home .journal-filter{gap:7px;margin-bottom:20px}
 .yzt-home .filter-btn{font-size:10px;padding:5px 10px}
 .yzt-home .current-filter{margin-left:0;font-size:10px}
 .yzt-home .post-row{grid-template-columns:1fr 32px;gap:11px 15px;padding:20px 0}
 .yzt-home .post-date{grid-column:1;grid-row:1;font-size:10px}
 .yzt-home .post-content{grid-column:1;grid-row:2}
 .yzt-home .post-title{font-size:17px;line-height:1.6;margin:0 0 5px}
 .yzt-home .post-excerpt{font-size:11px}
 .yzt-home .post-tag{display:none}
 .yzt-home .post-arrow{grid-column:2;grid-row:1/3;width:30px;height:30px}
 .yzt-home .journal-foot{font-size:10px;gap:15px;margin-top:18px}
 .yzt-home .knowledge{padding:54px 0 25px}
 .yzt-home .knowledge-heading{margin-bottom:20px;text-align:left}
 .yzt-home .knowledge-heading h2{font-size:29px;margin:11px 0}
 .yzt-home .knowledge-heading p{font-size:12px;line-height:1.95;max-width:340px}
 .yzt-home .knowledge-eyebrow{font-size:10px}
 .yzt-home .graph-toolbar{display:none}
 .yzt-home .graph-mobile-list{display:grid}
 .yzt-home .graph-viewport{display:none;overflow:auto;max-height:455px}
 .yzt-home .graph-shell.mobile-expanded .graph-viewport{display:block;overflow:auto;border:1px solid var(--line)}
 .yzt-home .graph-shell.mobile-expanded .knowledge-svg{width:970px;max-width:none;touch-action:pan-x pan-y}
 .yzt-home .graph-shell.mobile-expanded .graph-mobile-list{display:none}
 .yzt-home .graph-shell.mobile-expanded .graph-toolbar{display:flex;flex-wrap:wrap;font-size:9px}
 .yzt-home .mobile-graph-switch{display:block;margin:1px auto 17px}
 .yzt-home .graph-legend{font-size:9px;gap:18px;justify-content:flex-start;padding:0 0 15px}
 .yzt-home .relation-switches{justify-content:flex-start;gap:7px;margin-bottom:22px;margin-top:0}
 .yzt-home .relation-switches button{font-size:9px;padding:6px 10px}
 .yzt-home .topic-detail,.yzt-home[data-style="c"] .topic-detail{grid-template-columns:1fr;gap:12px;padding:20px 0;min-height:196px}
 .yzt-home .topic-detail h3{font-size:17px;margin-top:5px}
 .yzt-home .topic-detail p{font-size:12px;line-height:1.9}
 .yzt-home .detail-link{width:fit-content;font-size:11px}
 .yzt-home .detail-tags{gap:9px;font-size:9px}
 .yzt-home .topic-directory{gap:17px;margin-top:25px}
 .yzt-home .directory-group{display:block}
 .yzt-home .directory-group>span{display:block;margin-bottom:7px;padding:0}
 .yzt-home .directory-links{gap:4px 14px;font-size:10px}
 .yzt-home .about{padding:55px 0 45px;text-align:left}
 .yzt-home .about h2{font-size:30px;margin:11px 0 14px}
 .yzt-home .about-subtitle{font-size:11px;margin-bottom:26px}
 .yzt-home .about-copy{font-size:15px;line-height:2.05}
 .yzt-home .about-copy p{margin-bottom:19px}
 .yzt-home .about-copy .personal-detail{font-size:13px}
 .yzt-home .about-principle{font-size:15px!important;line-height:2.3!important;margin-top:22px!important}
 .yzt-home .about-art{margin-top:5px}
 .yzt-home .doodle{width:244px;height:180px}
 .yzt-home .doodle-button{font-size:10px}
 .yzt-home .doodle-caption{font-size:9px}
 .yzt-home .footer{padding:26px 0 105px;font-size:9px;gap:20px;align-items:flex-start}
 .yzt-home .footer-left{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
 .yzt-home .preview-dock{right:12px;bottom:12px;gap:3px;border-radius:10px;padding:5px 7px;max-width:calc(100% - 24px)}
 .yzt-home .preview-dock .dock-label{font-size:8px;padding-inline:2px}
 .yzt-home .preview-dock button{font-size:10px;height:29px;min-width:28px;padding:0 7px}
 .yzt-home .preview-dock .motion-toggle{font-size:9px;padding:0 5px}
 .yzt-home dialog{padding:23px}
 .yzt-home dialog h2{font-size:21px}
 .yzt-home .search-field input{font-size:16px}
 .yzt-home .search-result{padding-inline:5px}
 .yzt-home .search-result b{font-size:13px}
 .yzt-home[data-style="b"] .hero{display:block;padding-top:46px;text-align:left}
 .yzt-home[data-style="b"] .hero-copy{padding-bottom:0}
 .yzt-home[data-style="b"] h1{font-size:43px;line-height:1.45;margin-top:20px;margin-bottom:17px}
 .yzt-home[data-style="b"] .hero-lead{font-size:14px;margin:0;max-width:none}
 .yzt-home[data-style="b"] .hero-sub{font-size:11px;margin:11px 0 0;max-width:270px}
 .yzt-home[data-style="b"] .hero-actions{margin-top:24px}
 .yzt-home[data-style="b"] .scene-wrap{margin:52px 6px 0 0;padding:8px 8px 10px;box-shadow:6px 8px 0 #e7e5d5}
 .yzt-home[data-style="b"] .postcard-stamp{right:15px;top:-42px;width:62px;height:62px}
 .yzt-home[data-style="b"] .scene-caption{font-size:9px;padding:0 2px;gap:6px}
 .yzt-home[data-style="b"] .scene-controls button{font-size:9px}
 .yzt-home[data-style="b"] .hero-bottom{margin-top:8px;padding-bottom:32px}
 .yzt-home[data-style="b"] .hero-bottom p{font-size:11px;max-width:230px}
 .yzt-home[data-style="b"] .journal{padding-top:31px}
 .yzt-home[data-style="b"] .journal-body{display:block}
 .yzt-home[data-style="b"] .journal-filter{margin-bottom:18px}
 .yzt-home[data-style="b"] .journal-foot{margin-top:17px}
 .yzt-home[data-style="b"] .post-row{grid-template-columns:1fr 30px;gap:10px}
 .yzt-home[data-style="b"] .post-title{font-size:18px}
 .yzt-home[data-style="b"] .knowledge{display:block;padding-top:54px}
 .yzt-home[data-style="b"] .knowledge-heading{padding-top:0}
 .yzt-home[data-style="b"] .knowledge-heading h2{max-width:none;font-size:29px;margin:13px 0}
 .yzt-home[data-style="b"] .knowledge-heading p{max-width:none;font-size:12px}
 .yzt-home[data-style="b"] .graph-shell{padding:16px 12px 0}
 .yzt-home[data-style="b"] .graph-legend{justify-content:center}
 .yzt-home[data-style="b"] .topic-detail{grid-template-columns:1fr;min-height:205px;margin-top:18px;padding:20px 0;gap:12px}
 .yzt-home[data-style="b"] .topic-detail .detail-link{grid-column:1}
 .yzt-home[data-style="b"] .about{display:flex;flex-direction:column;padding-top:53px;gap:0;padding-bottom:52px}
 .yzt-home[data-style="b"] .about h2{font-size:29px}
 .yzt-home[data-style="b"] .about-copy{font-size:15px}
 .yzt-home[data-style="b"] .about-art{width:280px;min-height:278px;margin:17px auto 0}
 .yzt-home[data-style="b"] .doodle{width:250px;height:185px}
 .yzt-home[data-style="b"] .about-principle{font-size:15px!important}
 .yzt-home[data-style="c"] .hero{display:block;padding-top:43px}
 .yzt-home[data-style="c"] .hero::before{inset:15px -8px 80px;background-size:28px 28px}
 .yzt-home[data-style="c"] .hero-copy{display:block}
 .yzt-home[data-style="c"] .hero-label{font-size:9px}
 .yzt-home[data-style="c"] h1{font-size:43px;line-height:1.45;margin-top:22px;margin-bottom:16px}
 .yzt-home[data-style="c"] .hero-lead{margin:0;font-size:13px;max-width:none}
 .yzt-home[data-style="c"] .hero-sub{font-size:11px;margin:9px 0 0;max-width:310px}
 .yzt-home[data-style="c"] .hero-actions{margin-top:23px}
 .yzt-home[data-style="c"] .scene-wrap{margin-top:35px;padding:5px}
 .yzt-home[data-style="c"] .scene-caption{padding:0 3px 1px;font-size:8px;gap:5px}
 .yzt-home[data-style="c"] .scene-controls{gap:9px}
 .yzt-home[data-style="c"] .scene-controls button{font-size:8px}
 .yzt-home[data-style="c"] .hero-bottom{padding-bottom:32px}
 .yzt-home[data-style="c"] .journal{padding-top:32px}
 .yzt-home[data-style="c"] .section-head h2{font-size:26px}
 .yzt-home[data-style="c"] .post-row{padding:19px 15px}
 .yzt-home[data-style="c"] .post-row:hover{padding-left:20px}
 .yzt-home[data-style="c"] .post-title{font-size:17px}
 .yzt-home[data-style="c"] .knowledge{padding-top:50px}
 .yzt-home[data-style="c"] .knowledge-heading{display:block}
 .yzt-home[data-style="c"] .knowledge-heading h2{font-size:29px;margin:12px 0}
 .yzt-home[data-style="c"] .knowledge-heading p{margin-top:0}
 .yzt-home[data-style="c"] .graph-shell{padding:15px 12px 0;background-size:24px 24px}
 .yzt-home[data-style="c"] .topic-detail{padding:20px 17px;margin-top:19px;gap:12px}
 .yzt-home[data-style="c"] .about{display:flex;flex-direction:column;padding:55px 0 49px;gap:0}
 .yzt-home[data-style="c"] .about h2{font-size:30px}
 .yzt-home[data-style="c"] .about-copy{padding-top:0;font-size:15px}
 .yzt-home[data-style="c"] .about-art{margin:0 auto;width:250px}
}
@media(max-width:360px){.yzt-home h1{font-size:35px}.yzt-home .scene-controls{gap:8px}.yzt-home .preview-dock .dock-label{display:none}.yzt-home .hero-label{letter-spacing:0}.yzt-home .brand-sub{font-size:8px}}
@media(prefers-reduced-motion:reduce){html.yzt-home-document{scroll-behavior:auto}.yzt-home:not([data-motion="on"]) *{animation:none!important;transition:none!important}.yzt-home:not([data-motion="on"]) .char,.yzt-home:not([data-motion="on"]) .reveal{transform:none!important;opacity:1!important}}
@keyframes title-in{from{opacity:0;transform:translateY(35px) rotate(3deg);filter:blur(3px)}to{opacity:1;transform:none;filter:blur(0)}}
@keyframes menu-in{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}
@keyframes sun-drift{from{background-position:10% 0;opacity:.3}to{background-position:65% 0;opacity:.65}}
@keyframes glimmer{0%,100%{opacity:.02;transform:translateX(-4px)}45%{opacity:.55}65%{opacity:.25;transform:translateX(7px)}}
@keyframes gull-glide{from{transform:translate(-18px,7px) rotate(-3deg)}50%{transform:translate(32px,-12px) rotate(4deg)}to{transform:translate(80px,5px) rotate(-1deg)}}
@keyframes haze-drift{from{transform:translateX(-35px);opacity:.025}to{transform:translateX(55px);opacity:.08}}
@keyframes scroll-line{0%{transform:translateY(-100%)}65%,100%{transform:translateY(100%)}}
@keyframes plane-float{0%,100%{transform:translate(0,0) rotate(-2deg)}50%{transform:translate(2px,-7px) rotate(4deg)}}
@keyframes plane-launch{0%{transform:translate(0,0);opacity:1}40%{transform:translate(90px,-75px) rotate(12deg);opacity:1}65%{transform:translate(115px,-90px) rotate(18deg);opacity:0}66%{transform:translate(-35px,45px) rotate(-20deg);opacity:0}100%{transform:translate(0,0);opacity:1}}
@keyframes pen-write{0%,55%,100%{transform:translate(0,0) rotate(-2deg)}15%{transform:translate(7px,1px) rotate(2deg)}27%{transform:translate(1px,5px) rotate(-1deg)}42%{transform:translate(9px,6px) rotate(2deg)}}
@keyframes write-line{0%{stroke-dashoffset:55;opacity:0}10%{opacity:1}45%,90%{stroke-dashoffset:0;opacity:1}100%{stroke-dashoffset:0;opacity:0}}
@keyframes page-turn{0%,35%,100%{transform:scaleX(1)}49%{transform:scaleX(.15) translateY(-4px)}62%{transform:scaleX(1)}}
@keyframes spark{0%,100%{opacity:.4;transform:scale(.8)}50%{opacity:1;transform:scale(1.1)}}
@keyframes steam{0%,100%{opacity:.1;transform:translateY(3px)}50%{opacity:.6;transform:translateY(-8px)}}
@keyframes leaf-sway{0%,100%{transform:rotate(-3deg)}50%{transform:rotate(4deg)}}
@keyframes packet{to{stroke-dashoffset:-84}}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
@media print{.yzt-home .preview-dock,.yzt-home .scene-controls,.yzt-home .graph-tools,.yzt-home .menu-button,.yzt-home .nav{display:none!important}.yzt-home .site-header{position:static}.yzt-home .reveal{opacity:1!important;transform:none!important}.yzt-home section{break-inside:avoid}}

/* B final / greeting only. Existing layout and illustration rules stay unchanged.
   Full inline width is reserved; clip-path reveals, rather than stretching glyphs.
   Plain HTML is readable when JavaScript is disabled. */
.yzt-home .hero-eyebrow{display:inline-block;white-space:nowrap}
.yzt-home.has-js .hero-eyebrow.greeting-reveal{
  animation:yzt-greeting-reveal 1.25s cubic-bezier(.25,.65,.35,1) .15s both;
}
@keyframes yzt-greeting-reveal{
  from{clip-path:inset(0 100% 0 0);opacity:.35}
  20%{opacity:1}
  to{clip-path:inset(0 0 0 0);opacity:1}
}
.yzt-home[data-motion="off"] .hero-eyebrow.greeting-reveal{
  animation:none!important;clip-path:none;opacity:1;
}
@media(prefers-reduced-motion:reduce){
  .yzt-home .hero-eyebrow.greeting-reveal{
    animation:none!important;clip-path:none;opacity:1;
  }
}

/* WordPress compatibility only; original B component rules above are preserved. */
.yzt-home.admin-bar .site-header{top:32px}
.yzt-home .skip-link.screen-reader-text{display:none}
.yzt-home.admin-bar .reading-progress{top:32px}
.yzt-home .post-pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0;font-size:12px}
.yzt-home .post-pagination button:disabled{opacity:.4;cursor:default}
.yzt-home .search-dialog form{margin:0}
.yzt-home .search-status{font-size:13px}
.yzt-home .no-js-search{text-align:center;padding:20px}
.yzt-home .no-js-search input{max-width:60%;background:var(--card);border:1px solid var(--line);padding:8px}
.yzt-home .no-js-search button{padding:8px 16px}
@media(max-width:782px){.yzt-home.admin-bar .site-header,.yzt-home.admin-bar .reading-progress{top:46px}}
@media(max-width:600px){.yzt-home.admin-bar .site-header.is-scrolled{top:0}.yzt-home.admin-bar .reading-progress{top:0}}