:root{--ink: #f4f3ed;--muted: #999990;--line: rgba(244, 243, 237, .2);--paper: #1e1e1e;--hero-paper: #1e1e1e;--blue: #008fbd;--blue-soft: #94cede;--panel: #1e1e1e;--signal: #8dd49b;--page-pad: clamp(24px, 6.25vw, 80px);--header-height: 84px;--max-width: 1440px;--cjk-sans: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;font-family:Helvetica,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;text-rendering:optimizeLegibility;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth}.theme-switching *,.theme-switching *:before,.theme-switching *:after{transition:none!important}body{margin:0;min-width:320px;background-color:var(--paper);background-image:linear-gradient(var(--grid-major) 1px,transparent 1px),linear-gradient(90deg,var(--grid-major) 1px,transparent 1px),linear-gradient(var(--grid-minor) 1px,transparent 1px),linear-gradient(90deg,var(--grid-minor) 1px,transparent 1px),linear-gradient(45deg,transparent 49.88%,var(--grid-diagonal) 50%,transparent 50.12%);background-size:120px 120px,120px 120px,24px 24px,24px 24px,240px 240px;background-attachment:fixed}img{display:block;width:100%}a{color:inherit}button{font:inherit}::selection{color:var(--paper);background:var(--ink)}.cursor-trail{position:fixed;z-index:15;inset:0;width:100%;height:100%;pointer-events:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;z-index:100;top:12px;left:12px;padding:10px 14px;background:var(--ink);color:var(--paper);transform:translateY(-160%)}.skip-link:focus{transform:translateY(0)}.container{width:min(100%,var(--max-width));margin-inline:auto}.site-header{position:fixed;inset:0 0 auto;z-index:20;height:var(--header-height);display:flex;align-items:center;justify-content:space-between;padding-inline:var(--page-pad);border-bottom:1px solid rgba(5,5,5,.14);background:#e8edf0db;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.wordmark{font:500 clamp(20px,2.5vw,32px)/1.25 "IBM Plex Mono",monospace;letter-spacing:-.05em;text-decoration:none}.header-title{color:inherit;text-decoration:none}.header-title h1{margin:0;font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:clamp(30px,3.2vw,46px);font-weight:300;line-height:1;letter-spacing:-.025em}.header-actions{display:flex;align-items:center;gap:30px}.language-toggle{display:flex;align-items:center;gap:5px;padding:6px 0;border:0;color:#66767c;background:none;font:500 10px/1 IBM Plex Mono,monospace;letter-spacing:.05em;cursor:pointer}.language-toggle i{color:#a2adb1;font-style:normal}.language-toggle span{transition:color .14s cubic-bezier(.25,.46,.45,.94),opacity .14s cubic-bezier(.25,.46,.45,.94)}.language-toggle[data-language=en] span:first-child,.language-toggle[data-language=zh] span:last-child{color:var(--ink)}.language-toggle[data-language=en] span:last-child,.language-toggle[data-language=zh] span:first-child{opacity:.42}.primary-nav{display:flex;align-items:center;gap:32px}.nav-link,.menu-toggle,.eyebrow,.section-heading h2,.about-label h2,.micro-label,.project-meta span{font:500 11px/14px IBM Plex Mono,monospace;letter-spacing:.1em;text-transform:uppercase}.nav-link{padding-block:6px;color:var(--muted);text-decoration:none;border-bottom:1px solid transparent}.nav-link:hover,.nav-link.is-active{color:var(--ink);border-color:var(--ink)}.menu-toggle{display:none;border:0;background:none;cursor:pointer}main{padding-top:0}section{scroll-margin-top:var(--header-height)}.hero{position:relative;min-height:max(760px,100svh);overflow:hidden;padding:var(--header-height) var(--page-pad) 44px;border-bottom:1px solid rgba(5,5,5,.18);background:var(--hero-paper)}.hero-meta{position:absolute;z-index:3;top:calc(var(--header-height) + 22px);right:var(--page-pad);left:var(--page-pad);display:flex;justify-content:space-between;color:#3c555e;font:500 10px/1.2 IBM Plex Mono,monospace;letter-spacing:.09em;text-transform:uppercase}.capability-map{position:absolute;top:50%;left:42%;width:min(70vw,1000px);aspect-ratio:1000 / 760;transform:translate(-50%,-48%)}.orbit-drawing{width:100%;height:100%;overflow:visible}.orbit-lines path,.orbit-lines line{fill:none;stroke:var(--blue);stroke-width:1.4;vector-effect:non-scaling-stroke;transition:opacity .26s ease,stroke-width .26s ease,stroke .26s ease}.orbit-lines path{opacity:.5;stroke-dasharray:1000;stroke-dashoffset:1000;animation:orbit-draw 1.4s cubic-bezier(.22,.72,.24,1) forwards}.orbit-lines path:nth-child(2){animation-delay:80ms}.orbit-lines path:nth-child(3){animation-delay:.16s}.orbit-lines path:nth-child(4){animation-delay:.24s}.orbit-lines path:nth-child(5){animation-delay:.32s}.orbit-lines path:nth-child(6){animation-delay:.4s}.orbit-lines line{transform-box:fill-box;transform-origin:center;animation:line-reveal .7s .85s cubic-bezier(.22,.72,.24,1) both}.capability-map[data-active] .orbit-lines path{opacity:.18}.capability-map[data-active=ai] [data-orbit=ai],.capability-map[data-active=device] [data-orbit=device],.capability-map[data-active=research] [data-orbit=research],.capability-map[data-active=product] [data-orbit=product],.capability-map[data-active=engineering] [data-orbit=engineering],.capability-map[data-active=culture] [data-orbit=culture]{opacity:1;stroke:var(--blue);stroke-width:2.25;stroke-dasharray:12 10;stroke-dashoffset:0;animation:orbit-flow 10s linear infinite}.map-core{position:absolute;z-index:2;top:50%;left:50%;width:210px;padding:18px 10px;transform:translate(-50%,-50%);text-align:center;background:var(--hero-paper);animation:core-arrive .7s .54s cubic-bezier(.22,.72,.24,1) both}.map-core p{margin:0 0 10px;color:#345762;font:500 9px/1.45 IBM Plex Mono,monospace;letter-spacing:.1em;text-transform:uppercase}.map-core h1{margin:0;color:var(--blue);font:500 clamp(24px,2.3vw,34px)/.9 "IBM Plex Mono",monospace;letter-spacing:-.075em;text-transform:uppercase}.capability-node{position:absolute;z-index:4;display:flex;flex-direction:column;align-items:center;gap:3px;width:176px;padding:8px 10px;border:0;color:#17667d;background:var(--hero-paper);cursor:pointer;opacity:0;animation:node-arrive .52s cubic-bezier(.22,.72,.24,1) forwards;transition:color .22s ease,transform .22s ease}.capability-node:nth-child(1){animation-delay:.52s}.capability-node:nth-child(2){animation-delay:.6s}.capability-node:nth-child(3){animation-delay:.68s}.capability-node:nth-child(4){animation-delay:.76s}.capability-node:nth-child(5){animation-delay:.84s}.capability-node:nth-child(6){animation-delay:.92s}.capability-node:after{content:"";width:0;height:1px;margin-top:3px;background:var(--blue);transition:width .26s cubic-bezier(.22,.72,.24,1)}.capability-node span{font:500 clamp(11px,1vw,14px)/1.1 "IBM Plex Mono",monospace;letter-spacing:-.03em;text-transform:uppercase}.capability-node small{color:#53737c;font:500 8px/1.2 IBM Plex Mono,monospace;letter-spacing:.08em;text-transform:uppercase;opacity:0;transform:translateY(3px);transition:opacity .22s ease,transform .22s ease}.capability-node:hover,.capability-node:focus-visible,.capability-node[aria-pressed=true]{color:var(--ink);transform:scale(1.04)}.capability-node:hover small,.capability-node:focus-visible small,.capability-node[aria-pressed=true] small{opacity:1;transform:translateY(0)}.capability-node:hover:after,.capability-node:focus-visible:after,.capability-node[aria-pressed=true]:after{width:30px}.node-ai{top:8.5%;left:50%;transform:translate(-50%)}.node-device{top:31%;left:75%;transform:translate(-50%)}.node-research{top:62.5%;left:75%;transform:translate(-50%)}.node-product{top:87%;left:50%;transform:translate(-50%,-100%)}.node-engineering{top:62.5%;left:25%;transform:translate(-50%)}.node-culture{top:31%;left:25%;transform:translate(-50%)}.node-ai:hover,.node-ai:focus-visible,.node-ai[aria-pressed=true]{transform:translate(-50%) scale(1.04)}.node-product:hover,.node-product:focus-visible,.node-product[aria-pressed=true]{transform:translate(-50%,-100%) scale(1.04)}.node-device:hover,.node-device:focus-visible,.node-device[aria-pressed=true],.node-research:hover,.node-research:focus-visible,.node-research[aria-pressed=true],.node-engineering:hover,.node-engineering:focus-visible,.node-engineering[aria-pressed=true],.node-culture:hover,.node-culture:focus-visible,.node-culture[aria-pressed=true]{transform:translate(-50%) scale(1.04)}.capability-detail{position:absolute;z-index:5;right:var(--page-pad);bottom:74px;display:grid;grid-template-rows:auto 1fr auto auto;width:clamp(260px,23vw,340px);min-height:430px;padding:22px;color:#f6f8f8;background:#07090a}.detail-index{display:flex;justify-content:space-between;color:#a7b2b6;font:500 9px/1 IBM Plex Mono,monospace;letter-spacing:.08em;text-transform:uppercase}.detail-index span:first-child{color:var(--blue-soft)}.detail-kicker{margin:52px 0 10px;color:var(--blue-soft);font:500 9px/1.25 IBM Plex Mono,monospace;letter-spacing:.08em;text-transform:uppercase}.capability-detail h2{margin:0 0 18px;font-size:clamp(27px,2.4vw,36px);font-weight:400;line-height:.98;letter-spacing:-.055em}.detail-copy{max-width:280px;margin:0;color:#bac2c4;font-size:13px;line-height:1.55}.detail-tags{display:flex;flex-wrap:wrap;gap:5px;margin:28px 0 0;padding:0;list-style:none}.detail-tags li{padding:5px 7px;border:1px solid #384044;color:#dce1e2;font:500 8px/1 IBM Plex Mono,monospace;letter-spacing:.04em;text-transform:uppercase}.detail-hint{margin:18px 0 0;padding-top:12px;border-top:1px solid #2c3234;color:#727d81;font:500 8px/1 IBM Plex Mono,monospace;letter-spacing:.05em;text-transform:uppercase}.hero-scroll{position:absolute;bottom:25px;left:var(--page-pad);display:flex;align-items:center;gap:9px;color:#35535c;font:500 9px/1 IBM Plex Mono,monospace;letter-spacing:.08em;text-transform:uppercase}.hero-scroll span{display:block;width:38px;height:1px;background:var(--blue)}.hero-scroll b{font:inherit}html[lang=zh-CN] body,html[lang=zh-CN] .wordmark,html[lang=zh-CN] .nav-link,html[lang=zh-CN] .menu-toggle,html[lang=zh-CN] .hero-meta,html[lang=zh-CN] .map-core p,html[lang=zh-CN] .map-core h1,html[lang=zh-CN] .capability-node span,html[lang=zh-CN] .capability-node small,html[lang=zh-CN] .detail-index,html[lang=zh-CN] .detail-kicker,html[lang=zh-CN] .detail-tags li,html[lang=zh-CN] .detail-hint,html[lang=zh-CN] .hero-scroll,html[lang=zh-CN] .section-heading h2,html[lang=zh-CN] .about-label h2,html[lang=zh-CN] .micro-label,html[lang=zh-CN] .project-meta span{font-family:var(--cjk-sans)}html[lang=zh-CN] .wordmark{letter-spacing:-.035em}html[lang=zh-CN] .capability-node span,html[lang=zh-CN] .capability-node small,html[lang=zh-CN] .map-core h1,html[lang=zh-CN] .map-core p{letter-spacing:.04em;text-transform:none}html[lang=zh-CN] .capability-detail h2{font-family:var(--cjk-sans);font-weight:500;letter-spacing:-.04em}html[lang=zh-CN] .detail-copy,html[lang=zh-CN] .focus-intro p,html[lang=zh-CN] .capability>p:last-child{line-height:1.75}.capability-detail.is-changing .detail-index,.capability-detail.is-changing .detail-kicker,.capability-detail.is-changing h2,.capability-detail.is-changing .detail-copy,.capability-detail.is-changing .detail-tags{animation:detail-arrive .42s cubic-bezier(.22,.72,.24,1) both}.capability-detail.is-changing .detail-kicker{animation-delay:35ms}.capability-detail.is-changing h2{animation-delay:70ms}.capability-detail.is-changing .detail-copy{animation-delay:105ms}.capability-detail.is-changing .detail-tags{animation-delay:.14s}@keyframes orbit-draw{to{stroke-dashoffset:0}}@keyframes orbit-flow{to{stroke-dashoffset:-220}}@keyframes graph-trail-flow{to{stroke-dashoffset:-1196}}@keyframes line-reveal{0%{opacity:0;transform:scaleY(0)}to{opacity:1;transform:scaleY(1)}}@keyframes core-arrive{0%{opacity:0;transform:translate(-50%,calc(-50% + 10px))}to{opacity:1;transform:translate(-50%,-50%)}}@keyframes node-arrive{0%{opacity:0;filter:blur(3px)}to{opacity:1;filter:blur(0)}}@keyframes detail-arrive{0%{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}.section-heading{padding:48px var(--page-pad);border-bottom:1px solid var(--line)}.section-heading h2,.about-label h2{margin:0;font-size:16px;color:var(--ink)}.project{min-height:464px;display:grid;grid-template-columns:repeat(12,1fr);border-bottom:1px solid var(--line);background:var(--panel);overflow:hidden}.project-visual{grid-column:span 8;overflow:hidden;background:#ddd}.project-visual img{height:100%;object-fit:cover;transition:transform .8s cubic-bezier(.2,.7,.2,1)}.project:hover .project-visual img{transform:scale(1.025)}.project-info{grid-column:span 4;display:flex;flex-direction:column;justify-content:space-between;min-width:0;padding:48px;border-left:1px solid var(--line)}.image-right .project-visual{order:2}.image-right .project-info{order:1;border-left:0;border-right:1px solid var(--line)}.project-info h3{margin:0 0 16px;font-size:32px;font-weight:500;line-height:1.25}.project-info>div>p{max-width:310px;margin:0;color:var(--muted);font-size:16px;line-height:1.5}.project-meta{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding-top:17px;border-top:1px solid var(--line)}.project-meta-item{display:flex;flex-direction:column;gap:10px;min-width:0}.project-meta span{color:#555}.project-meta strong{font-size:12px;line-height:1.35;letter-spacing:.03em;font-weight:500}.about{display:block;min-height:0;padding:72px var(--page-pad) 110px}.focus-heading{display:grid;grid-template-columns:repeat(12,1fr);gap:32px}.about-label{grid-column:span 4}.focus-intro{grid-column:span 8}.focus-intro{padding-top:32px;border-top:1px solid var(--line)}.focus-intro h3{max-width:760px;margin:0 0 24px;font-size:clamp(32px,3.1vw,40px);line-height:1.2;font-weight:500;letter-spacing:-.025em}.focus-intro p{max-width:780px;margin:0;color:var(--muted);font-size:20px;line-height:1.6}.capability-grid{position:relative;isolation:isolate;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));height:clamp(500px,42vw,600px);margin-top:68px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background-image:linear-gradient(to right,transparent calc(100% - 1px),var(--hero-line-soft) calc(100% - 1px));background-size:25% 100%;overflow:hidden}.matrix-pixels{position:absolute;z-index:1;inset:0;pointer-events:none}.matrix-pixel{position:absolute;top:var(--y);left:var(--x);width:var(--pixel-width);height:var(--pixel-height);background:var(--pixel-color);opacity:.58;animation:matrix-pixel-drift 5.8s cubic-bezier(.455,.03,.515,.955) var(--pixel-delay) infinite alternate}.capability-grid.motion-paused .matrix-pixel{animation-play-state:paused}.focus-block{position:relative;z-index:3;display:grid;place-items:center;width:100%;height:100%;border-right:1px solid var(--hero-line-soft)}.focus-block[data-focus="4"]{border-right:0}.focus-block.is-open{z-index:6}.focus-trigger{position:relative;width:clamp(132px,12vw,156px);height:clamp(132px,12vw,156px);display:flex;align-items:stretch;justify-content:space-between;flex-direction:column;padding:13px;border:1px solid var(--focus-block-border);border-radius:0;color:var(--focus-block-text);background:var(--focus-block-bg);text-align:left;cursor:pointer;box-shadow:0 10px 28px #00000021;transition:transform .15s cubic-bezier(.25,.46,.45,.94),border-color .15s cubic-bezier(.25,.46,.45,.94)}.focus-trigger:focus-visible{outline-color:var(--focus-node);outline-offset:4px}.focus-trigger:active{transform:scale(.97)}.focus-index{font:500 9px/1 IBM Plex Mono,monospace;letter-spacing:.12em;opacity:.58}.focus-trigger-copy{display:flex;flex-direction:column;gap:5px}.focus-trigger-copy small{font:400 7px/1.25 IBM Plex Mono,monospace;letter-spacing:.08em;text-transform:uppercase;opacity:.56}.focus-trigger-copy strong{max-width:105px;font-size:clamp(13px,1.1vw,16px);line-height:1.05;letter-spacing:-.025em;font-weight:400}.focus-trigger-icon{position:absolute;top:11px;right:12px;font:400 16px/1 IBM Plex Mono,monospace;transition:transform .15s cubic-bezier(.25,.46,.45,.94)}.focus-trigger[aria-expanded=true] .focus-trigger-icon{transform:rotate(45deg)}.focus-tags{position:absolute;top:calc(50% + 88px);right:16px;left:16px;width:auto;min-height:104px;padding:16px;border:1px solid var(--line);color:var(--ink);background:var(--focus-panel-bg);box-shadow:0 14px 34px #0000001f;animation:focus-tags-in .2s cubic-bezier(.32,.72,0,1) both}.focus-block[data-focus="3"] .focus-tags,.focus-block[data-focus="4"] .focus-tags{right:16px;left:16px}.focus-tags p{margin:0 0 14px;color:var(--muted);font:500 8px/1 IBM Plex Mono,monospace;letter-spacing:.12em;text-transform:uppercase}.focus-tags ul{display:flex;flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none}.focus-tags li{padding:7px 9px;border:1px solid var(--line);background:var(--paper);font:400 9px/1.2 IBM Plex Mono,monospace}.focus-tags[hidden]{display:none}@keyframes matrix-pixel-drift{0%{transform:translate3d(0,-3px,0)}to{transform:translate3d(var(--pixel-drift),5px,0)}}@keyframes focus-tags-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.site-footer{display:flex;justify-content:flex-end;align-items:flex-end;gap:40px;padding:32px var(--page-pad);border-top:1px solid var(--line);color:var(--muted);font-size:14px;line-height:1.5}.availability{display:flex;align-items:center;gap:10px;margin:0}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 4px #8dd49b29}.footer-right{display:flex;align-items:flex-end;gap:64px}.footer-right p{margin:0;white-space:nowrap}.footer-links{display:flex;flex-direction:column;gap:12px}.footer-links a{text-underline-offset:3px}.footer-links .design-spec-download{width:max-content;padding-bottom:4px;border-bottom:1px solid currentColor;color:var(--ink);font-family:IBM Plex Mono,monospace;font-size:10px;font-weight:500;letter-spacing:.06em;line-height:1.3;text-decoration:none;text-transform:uppercase;transition:color .18s ease,border-color .18s ease}.footer-links .design-spec-download:hover,.footer-links .design-spec-download:focus-visible{color:var(--graph-selection)}:focus-visible{outline:2px solid var(--ink);outline-offset:4px}@media(max-width:900px){:root{--header-height: 78px}.capability-map{left:38%;width:min(83vw,820px)}.capability-detail{right:24px;width:255px;min-height:390px}.capability-detail h2{font-size:28px}.project{min-height:420px;grid-template-columns:1.35fr 1fr}.project-visual,.project-info{grid-column:auto}.project-info{padding:32px}.project-info h3{font-size:27px}.about-label{grid-column:span 3}.focus-intro{grid-column:span 9}.capability-grid{height:570px}.site-footer{align-items:flex-start}.footer-right{gap:32px}}@media(max-width:680px){:root{--header-height: 72px}.site-header{padding-inline:20px}.wordmark{font-size:17px}.header-actions{gap:12px}.language-toggle{font-size:9px}html[lang=zh-CN] .wordmark{font-size:14px}.menu-toggle{display:block;padding:8px 0}.primary-nav{position:absolute;top:72px;left:0;right:0;display:none;align-items:stretch;flex-direction:column;gap:0;padding:12px 20px 24px;border-bottom:1px solid var(--line);background:var(--paper)}.primary-nav.is-open{display:flex}.nav-link{padding:14px 0;border-bottom-color:var(--line)}.nav-link.is-active{border-color:var(--ink)}.hero{min-height:930px;padding:72px 20px 34px}.hero-meta{top:88px;right:20px;left:20px}.hero-meta span:last-child{display:none}.capability-map{top:132px;left:50%;width:640px;transform:translate(-50%) scale(.58);transform-origin:top center}.capability-node{width:158px}.capability-node span{font-size:12px}.capability-node small{font-size:8px;opacity:1}.map-core h1{font-size:29px}.capability-detail{right:20px;bottom:64px;left:20px;width:auto;min-height:300px}.detail-kicker{margin-top:32px}.detail-copy{max-width:100%}.hero-scroll{bottom:25px;left:20px}.section-heading{padding:32px 24px}.project{display:flex;flex-direction:column;min-height:0}.project-visual,.image-right .project-visual{order:1;aspect-ratio:1.65}.project-info,.image-right .project-info{order:2;min-height:320px;padding:28px 24px;border:0;border-top:1px solid var(--line)}.about{display:block;min-height:0;padding:56px 24px 88px}.focus-heading{display:block}.about-label{margin-bottom:40px}.focus-intro h3{font-size:31px}.focus-intro p{font-size:18px}.capability-grid{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(2,minmax(0,1fr));height:720px;margin-top:56px;padding:0;background-size:50% 100%;overflow:hidden}.focus-block,.focus-block[data-focus]{position:relative;inset:auto!important;width:100%!important;height:100%;margin:0;border-right:1px solid var(--hero-line-soft);border-bottom:1px solid var(--hero-line-soft)}.focus-block[data-focus="2"],.focus-block[data-focus="4"]{border-right:0}.focus-block[data-focus="3"],.focus-block[data-focus="4"]{border-bottom:0}.focus-block.is-open{height:100%}.focus-trigger{width:136px;height:136px}.focus-tags,.focus-block[data-focus="3"] .focus-tags,.focus-block[data-focus="4"] .focus-tags{top:calc(50% + 80px);right:18px;left:18px;width:auto;min-height:96px;padding:13px}.matrix-pixels{opacity:.48}.site-footer{flex-direction:column;padding:32px 24px}.footer-right{width:100%;flex-direction:column;align-items:flex-start;gap:32px}.footer-right p{white-space:normal}}@media(max-width:560px){.capability-grid{grid-template-columns:minmax(0,1fr);grid-template-rows:repeat(4,270px);height:auto;background-size:100% 270px}.focus-block,.focus-block[data-focus]{min-height:270px;border-right:0;border-bottom:1px solid var(--hero-line-soft)}.focus-block[data-focus="3"]{border-bottom:1px solid var(--hero-line-soft)}.focus-block[data-focus="4"]{border-bottom:0}.focus-tags,.focus-block[data-focus="3"] .focus-tags,.focus-block[data-focus="4"] .focus-tags{top:calc(50% + 76px)}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}:root{--hero-bg: #1e1e1e;--hero-text: #f4f3ed;--hero-muted: #999990;--hero-line: rgba(244, 243, 237, .2);--hero-line-soft: rgba(244, 243, 237, .09);--header-bg: rgba(30, 30, 30, .88);--grid-minor: rgba(244, 243, 237, .008);--grid-major: rgba(244, 243, 237, .018);--grid-diagonal: rgba(244, 243, 237, .006);--trail-rgb: 244, 243, 237;--trail-accent-rgb: 155, 99, 255;--ease-out-ui: cubic-bezier(.25, .46, .45, .94);--ease-in-out-ui: cubic-bezier(.455, .03, .515, .955);--graph-selection: #c3a3ff;--graph-selection-glow: rgba(155, 99, 255, .72);--focus-line: rgba(244, 243, 237, .32);--focus-line-hover: rgba(244, 243, 237, .8);--focus-node: #c8c8c2;--focus-core-ink: #1e1e1e;--matrix-field: rgba(244, 243, 237, .025);--focus-block-bg: #050505;--focus-block-text: #f4f3ed;--focus-block-border: rgba(244, 243, 237, .2);--focus-panel-bg: rgba(35, 35, 33, .96)}:root[lang=zh-CN]{--ink: #1e1e1e;--muted: #666660;--line: rgba(30, 30, 30, .18);--paper: #f4f4f0;--hero-paper: #f4f4f0;--panel: #f4f4f0;--hero-bg: #f4f4f0;--hero-text: #1e1e1e;--hero-muted: #686862;--hero-line: rgba(30, 30, 30, .2);--hero-line-soft: rgba(30, 30, 30, .08);--header-bg: rgba(244, 244, 240, .9);--grid-minor: rgba(30, 30, 30, .009);--grid-major: rgba(30, 30, 30, .018);--grid-diagonal: rgba(30, 30, 30, .006);--trail-rgb: 30, 30, 30;--trail-accent-rgb: 132, 76, 235;--graph-selection: #7135d6;--graph-selection-glow: rgba(113, 53, 214, .3);--focus-line: rgba(30, 30, 30, .3);--focus-line-hover: rgba(30, 30, 30, .76);--focus-node: #3f3f3a;--focus-core-ink: #f4f4f0;--matrix-field: rgba(30, 30, 30, .035);--focus-block-bg: #050505;--focus-block-text: #f4f3ed;--focus-block-border: rgba(5, 5, 5, .9);--focus-panel-bg: rgba(244, 244, 240, .97);color-scheme:light}.site-header{color:var(--hero-text);border-bottom-color:var(--hero-line);background:var(--header-bg)}.language-toggle{color:var(--hero-muted)}.language-toggle i{color:#696963}.language-toggle[data-language=en] span:first-child,.language-toggle[data-language=zh] span:last-child{color:var(--hero-text)}.nav-link{color:var(--hero-muted)}.nav-link:hover,.nav-link.is-active{color:var(--hero-text);border-color:var(--hero-text)}.hero{min-height:1040px;padding:calc(var(--header-height) + 28px) var(--page-pad) 78px;overflow:clip;color:var(--hero-text);border-bottom-color:var(--hero-line);background:transparent}.hero-meta{top:calc(var(--header-height) + 18px);color:var(--hero-muted)}.knowledge-graph{position:relative;width:min(100%,1440px);margin:0 auto}.graph-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;min-height:24px;padding-top:0}.graph-heading p,.graph-heading h1{margin:0}.graph-heading p{margin-bottom:7px;color:var(--hero-muted);font:400 10px/1.25 IBM Plex Mono,monospace;letter-spacing:.12em;text-transform:uppercase}.graph-heading h1{font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:clamp(42px,5.4vw,76px);font-weight:300;line-height:.94;letter-spacing:-.025em}.graph-legend{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:5px 18px;max-width:62%;padding-bottom:4px}.graph-legend button{display:inline-flex;align-items:center;gap:7px;padding:4px 0;border:0;color:var(--hero-muted);background:transparent;font:400 9px/1.2 IBM Plex Mono,monospace;letter-spacing:.04em;cursor:pointer}.graph-legend button:before{content:"";width:7px;height:7px;border:1px solid var(--hero-text);border-radius:50%}.graph-legend button:hover,.graph-legend button[aria-pressed=true]{color:var(--hero-text)}.graph-legend button[aria-pressed=true]:before{background:var(--hero-text)}.graph-stage{position:relative;height:clamp(650px,78vh,880px);margin-top:12px}#knowledge-graph-svg{display:block;width:100%;height:100%;overflow:visible}.curve-stop-edge{stop-color:var(--hero-text);stop-opacity:.045}.curve-stop-center{stop-color:var(--hero-text);stop-opacity:.2}.graph-depth-curves{transform-box:view-box;transform-origin:center;will-change:transform;animation:curve-bundle-turn 52s var(--ease-in-out-ui) infinite}.graph-depth-curve{fill:none;stroke:url(#curve-depth-gradient);stroke-linecap:round;vector-effect:non-scaling-stroke;transform-box:fill-box;transform-origin:center;pointer-events:none;will-change:transform;animation:depth-curve-drift var(--curve-duration) var(--ease-in-out-ui) var(--curve-delay) infinite alternate}.graph-depth-curve.depth-far{stroke-width:.78;opacity:.52;stroke-dasharray:1.5 9}.graph-depth-curve.depth-mid{stroke-width:1.05;opacity:.72;stroke-dasharray:3 11}.graph-depth-curve.depth-near{stroke-width:1.45;opacity:.9}.graph-depth-curve.is-purple{stroke:url(#curve-purple-gradient);stroke-width:1.1;opacity:.65}#knowledge-graph-svg.curves-paused .graph-depth-curves,#knowledge-graph-svg.curves-paused .graph-depth-curve,#knowledge-graph-svg.curves-paused .graph-motion path,#knowledge-graph-svg.curves-paused .graph-field,#knowledge-graph-svg.curves-paused .graph-orbit{animation-play-state:paused}@keyframes depth-curve-drift{0%{transform:translate3d(-34px,-3px,0) scaleY(.98)}to{transform:translate3d(34px,3px,0) scaleY(1.02)}}@keyframes curve-bundle-turn{0%,to{transform:rotate(-2.2deg) scale(1.08)}50%{transform:rotate(2.2deg) scale(1.14)}}.graph-orbit{fill:none;stroke:var(--hero-text);stroke-width:1.15;opacity:.38;stroke-dasharray:2 8;vector-effect:non-scaling-stroke;transition:opacity .15s var(--ease-out-ui),stroke-width .15s var(--ease-out-ui)}.graph-orbit:nth-child(3n){stroke-dasharray:none;opacity:.32}.graph-orbit.is-muted{opacity:.055}.graph-orbit.is-active{opacity:.55;stroke-width:1.4}.graph-motion path{fill:none;stroke:var(--focus-node);stroke-width:3;stroke-linecap:round;stroke-dasharray:120 1076;opacity:1;vector-effect:non-scaling-stroke;animation:graph-trail-flow 6.4s linear infinite}.graph-link{fill:none;stroke:var(--hero-text);stroke-width:1;opacity:0;vector-effect:non-scaling-stroke;transition:opacity .16s ease,stroke .2s ease}.graph-link.is-active{opacity:.72;stroke:var(--graph-selection)}.graph-node{cursor:pointer;pointer-events:bounding-box}.graph-node-hit{fill:transparent;stroke:none}.graph-node-dot{fill:var(--hero-text);stroke:var(--hero-bg);stroke-width:2;vector-effect:non-scaling-stroke;transform-box:fill-box;transform-origin:center;transition:transform .14s var(--ease-out-ui),fill .14s var(--ease-out-ui),stroke .14s var(--ease-out-ui)}.graph-node-label{fill:var(--hero-text);font:500 9px/1 IBM Plex Mono,monospace;letter-spacing:.01em;paint-order:stroke;stroke:var(--hero-bg);stroke-width:4px;stroke-linejoin:round;pointer-events:none;transition:fill .14s var(--ease-out-ui),opacity .14s var(--ease-out-ui)}.graph-node[data-rank="2"] .graph-node-label,.graph-node[data-rank="3"] .graph-node-label{opacity:0}.graph-node.is-related .graph-node-label,.graph-node.is-selected .graph-node-label{opacity:1!important;visibility:visible!important}.graph-node.is-muted{opacity:.1}.graph-node.is-related .graph-node-dot{stroke-width:4}.graph-node.is-selected .graph-node-dot{fill:var(--graph-selection);stroke:var(--hero-bg);stroke-width:3;transform:scale(1.12);filter:drop-shadow(0 0 5px var(--graph-selection-glow))}.graph-node.is-selected .graph-node-label{fill:var(--graph-selection);font-weight:500}.graph-node:active .graph-node-dot{transform:scale(.96)}.graph-node:focus,.graph-node:focus-visible{outline:none}.graph-node:focus-visible:not(.is-selected) .graph-node-dot{stroke:var(--hero-text);stroke-width:3}.graph-node:focus-visible .graph-node-label{text-decoration:underline}#knowledge-graph-svg.is-keyboard-selecting .graph-node-dot,#knowledge-graph-svg.is-keyboard-selecting .graph-node-label,#knowledge-graph-svg.is-keyboard-selecting .graph-orbit{transition:none}@media(hover:hover)and (pointer:fine){.focus-trigger:hover{transform:translateY(-3px);border-color:#85857e}.graph-node:hover .graph-node-label{opacity:1!important;visibility:visible!important}.graph-node:not(.is-selected):hover .graph-node-dot{fill:var(--graph-selection)}}.graph-tooltip{position:absolute;z-index:7;max-width:210px;padding:8px 10px;color:var(--hero-bg);background:var(--hero-text);border:1px solid var(--hero-text);font:500 10px/1.35 IBM Plex Mono,monospace;pointer-events:none}.graph-detail{display:grid;grid-template-columns:minmax(190px,.8fr) minmax(280px,1.5fr) auto;align-items:center;gap:22px;min-height:67px;border-top:1px solid var(--hero-line);border-bottom:1px solid var(--hero-line)}.graph-detail-name{display:flex;flex-direction:column;gap:4px}.graph-detail-name span{color:var(--hero-muted);font:400 9px/1.2 IBM Plex Mono,monospace;letter-spacing:.1em}.graph-detail-name strong{font-family:Helvetica,Helvetica Neue,Arial,sans-serif;font-size:14px;font-weight:400}.graph-detail>p{margin:0;color:var(--hero-muted);font-size:12px;line-height:1.45}.graph-detail>a{color:var(--hero-text);font:500 10px/1.2 IBM Plex Mono,monospace;letter-spacing:.08em;text-decoration:none;white-space:nowrap}.graph-detail>a:hover{text-decoration:underline;text-underline-offset:4px}.graph-detail>a[hidden]{display:none}html[data-layout=plan-b] .graph-heading{min-height:24px}html[data-layout=plan-b] .graph-heading p{display:none}html[data-layout=plan-b] .hero-meta{justify-content:flex-start;text-align:left}html[data-layout=plan-b] .hero-meta span:last-child{display:none}html[data-layout=plan-b] .graph-depth-curves{display:none}html[data-layout=plan-b] .graph-stage{margin-top:0}html[data-layout=plan-b] .graph-legend{position:absolute;z-index:8;top:42px;left:0;display:block;width:100%;height:650px;max-width:none;padding:0;pointer-events:none}html[data-layout=plan-b] .graph-legend button{position:absolute;min-width:138px;justify-content:center;padding:10px 16px;border:1px dashed var(--hero-muted);border-radius:999px;color:var(--hero-text);background:var(--hero-bg);letter-spacing:0;pointer-events:auto;transition:color .15s var(--ease-out-ui),background-color .15s var(--ease-out-ui),border-color .15s var(--ease-out-ui),transform .15s var(--ease-out-ui)}html[data-layout=plan-b] .graph-legend button:before{display:none}html[data-layout=plan-b] .graph-legend button:nth-child(1){top:31%;left:7%}html[data-layout=plan-b] .graph-legend button:nth-child(2){top:6%;left:27%}html[data-layout=plan-b] .graph-legend button:nth-child(3){top:12%;right:8%}html[data-layout=plan-b] .graph-legend button:nth-child(4){top:54%;left:8%}html[data-layout=plan-b] .graph-legend button:nth-child(5){top:66%;left:43%}html[data-layout=plan-b] .graph-legend button:nth-child(6){top:55%;right:7%}html[data-layout=plan-b] .graph-legend button[aria-pressed=true]{color:var(--hero-bg);border-color:var(--hero-text);border-style:solid;background:var(--hero-text);transform:scale(1.03)}html[data-layout=plan-b] .graph-orbit{opacity:.44;stroke-width:1.1;stroke-dasharray:2 8;animation:plan-b-dash-flow 34s linear infinite}html[data-layout=plan-b] .graph-orbit:nth-child(3n){opacity:.44;stroke-dasharray:2 8}html[data-layout=plan-b] .graph-orbit.is-muted{opacity:.28}html[data-layout=plan-b] .graph-orbit.is-active{opacity:0}html[data-layout=plan-b] .graph-motion path{stroke:var(--hero-text);stroke-width:1.6;stroke-dasharray:none;animation:none}html[data-layout=plan-b] .graph-field{transform-box:view-box;transform-origin:center;will-change:transform;animation:plan-b-field-drift 22s cubic-bezier(.45,0,.55,1) infinite alternate}html[data-layout=plan-b] .graph-orbit:nth-child(2n){animation-direction:reverse;animation-duration:42s}html[data-layout=plan-b] #knowledge-graph-svg.is-selection-active .graph-orbit{animation-duration:16s}html[data-layout=plan-b] #knowledge-graph-svg.is-selection-active .graph-orbit:nth-child(2n){animation-duration:20s}@keyframes plan-b-field-drift{0%{transform:translate3d(-4px,2px,0) rotate(-.3deg)}50%{transform:translate3d(3px,-4px,0) rotate(.18deg)}to{transform:translate3d(5px,3px,0) rotate(.34deg)}}@keyframes plan-b-dash-flow{to{stroke-dashoffset:-80}}html[data-layout=plan-b] .graph-node .graph-node-label{opacity:0!important}html[data-layout=plan-b] .graph-node.is-related .graph-node-label,html[data-layout=plan-b] .graph-node.is-selected .graph-node-label{opacity:1!important}html[data-layout=plan-b] .graph-node:not(.is-selected) .graph-node-dot{opacity:.62}.hero-scroll{color:var(--hero-muted);text-decoration:none}.hero-scroll span{background:var(--hero-text)}.hero-scroll:hover{color:var(--hero-text)}.hero :focus-visible,.site-header :focus-visible{outline-color:var(--hero-text)}@media(max-width:900px){.graph-heading{align-items:flex-start;flex-direction:column;gap:18px}.graph-legend{justify-content:flex-start;max-width:none}.graph-stage{height:620px}.graph-detail{grid-template-columns:minmax(160px,.8fr) minmax(220px,1.3fr) auto}}@media(max-width:680px){.primary-nav{border-bottom-color:var(--hero-line);background:var(--hero-bg)}.nav-link{border-bottom-color:var(--hero-line)}.hero{min-height:1040px;padding:calc(var(--header-height) + 28px) 20px 72px}.hero-meta{top:calc(var(--header-height) + 14px);right:20px;left:20px}.hero-meta span:last-child{display:none}.graph-heading{min-height:0;padding-top:24px}.graph-heading h1{font-size:clamp(40px,13vw,54px)}.graph-legend{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));width:100%;gap:4px 10px}.graph-legend button{min-width:0;font-size:8px;text-align:left}html[data-layout=plan-b] .graph-legend{position:static;display:grid;width:100%;height:auto;pointer-events:auto}html[data-layout=plan-b] .graph-legend button{position:static;min-width:0;padding:8px 10px}.graph-stage{height:500px;margin:8px -20px 0;overflow:hidden}#knowledge-graph-svg{width:100%;transform:none}.graph-node-label{font-size:8px}.graph-node:not(.is-selected) .graph-node-label{opacity:0}.graph-detail{grid-template-columns:minmax(0,1fr);gap:7px;min-height:122px;padding:12px 0}.graph-detail>a{justify-self:start}.hero-scroll{bottom:18px}}@media(max-width:680px){:root{--header-height: 64px}body{background-attachment:scroll}.cursor-trail{display:none}.site-header{height:calc(var(--header-height) + env(safe-area-inset-top));padding-top:env(safe-area-inset-top);padding-right:max(16px,env(safe-area-inset-right));padding-left:max(16px,env(safe-area-inset-left))}.wordmark{font-size:clamp(13px,4.1vw,16px);letter-spacing:-.045em;white-space:nowrap}.header-title h1{font-size:clamp(24px,7.2vw,31px);white-space:nowrap}.language-toggle,.menu-toggle{min-width:44px;min-height:44px;align-items:center;justify-content:center}.primary-nav{top:calc(var(--header-height) + env(safe-area-inset-top));padding-right:max(20px,env(safe-area-inset-right));padding-bottom:max(20px,env(safe-area-inset-bottom));padding-left:max(20px,env(safe-area-inset-left))}.nav-link{min-height:48px;display:flex;align-items:center}.hero{min-height:auto;padding:calc(var(--header-height) + env(safe-area-inset-top) + 34px) max(18px,env(safe-area-inset-right)) 30px max(18px,env(safe-area-inset-left))}.hero-meta{top:calc(var(--header-height) + env(safe-area-inset-top) + 14px);right:max(18px,env(safe-area-inset-right));left:max(18px,env(safe-area-inset-left))}.graph-heading{gap:16px;padding-top:18px}.graph-heading p{margin-bottom:8px;font-size:9px}.graph-heading h1{max-width:100%;font-size:clamp(42px,13vw,52px);line-height:.98;letter-spacing:-.02em}html[data-layout=plan-b] .graph-heading{min-height:0}html[data-layout=plan-b] .graph-legend{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}html[data-layout=plan-b] .graph-legend button{min-height:44px;padding:9px 10px;font-size:8px;line-height:1.25;text-align:center}.graph-stage{height:430px;margin:12px -18px 0}#knowledge-graph-svg{width:100%;margin-left:0}html[data-layout=plan-b] .graph-node-label{font-size:14px;stroke-width:7px}.graph-node-hit{r:44px}.graph-detail{gap:9px;min-height:150px;padding:16px 0 18px}.graph-detail-name strong{font-size:18px}.graph-detail>p{font-size:14px;line-height:1.5}.graph-detail>a{display:inline-flex;align-items:center;min-height:44px;justify-self:start}.site-footer{gap:30px;padding:28px max(20px,env(safe-area-inset-right)) max(28px,env(safe-area-inset-bottom)) max(20px,env(safe-area-inset-left))}.footer-links a{display:inline-flex;align-items:center;min-height:44px}}@media(max-width:380px){.header-actions{gap:4px}.language-toggle{min-width:38px}html[data-layout=plan-b] .graph-legend button{padding-inline:7px;font-size:7.5px}.graph-stage{height:400px}}