:root {
  --ink: #07130f;
  --ink-2: #0f211a;
  --paper: #f2f0e7;
  --paper-2: #e7e3d6;
  --signal: #c8f560;
  --coral: #ff715b;
  --sky: #9dccff;
  --line-dark: rgba(242, 240, 231, .18);
  --line-light: rgba(7, 19, 15, .16);
  --display: "Bricolage Grotesque", "Helvetica Neue", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--display); font-size: 16px; overflow-x: hidden; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
::selection { background: var(--signal); color: var(--ink); }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 100; transform: translateY(-160%); background: var(--signal); color: var(--ink); padding: .75rem 1rem; font-weight: 700; }
.skip-link:focus { transform: translateY(0); }
.grain { position: fixed; inset: 0; z-index: 1000; pointer-events: none; opacity: .055; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.65'/%3E%3C/svg%3E"); }

.site-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 50; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 18px 3.5vw; color: var(--paper); transition: background .3s, color .3s, border-color .3s; border-bottom: 1px solid transparent; }
.site-header.is-scrolled { background: rgba(242,240,231,.92); color: var(--ink); border-color: var(--line-light); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 10px; width: fit-content; font-weight: 750; font-size: 1.3rem; letter-spacing: -.04em; }
.brand-mark { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.mark-pupil { fill: var(--signal); stroke: none; }
.site-header nav { display: flex; gap: 1.55rem; font-size: .78rem; }
.site-header nav a { opacity: .72; transition: opacity .2s; }
.site-header nav a:hover, .site-header nav a:focus-visible { opacity: 1; }
.header-actions { justify-self: end; display: flex; align-items: center; gap: 12px; }
.language-toggle { display: flex; padding: 3px; border: 1px solid currentColor; border-radius: 999px; background: transparent; color: inherit; cursor: pointer; font-family: var(--mono); font-size: .64rem; }
.language-toggle span { padding: 5px 7px; border-radius: 999px; opacity: .55; }
.language-toggle span:first-child { background: currentColor; color: var(--ink); opacity: 1; }
.site-header.is-scrolled .language-toggle span:first-child { color: var(--paper); }
html[data-lang="zh"] .language-toggle span:first-child { background: transparent; color: inherit; opacity: .55; }
html[data-lang="zh"] .language-toggle span:last-child { background: currentColor; color: var(--ink); opacity: 1; }
html[data-lang="zh"] .site-header.is-scrolled .language-toggle span:last-child { color: var(--paper); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 23px; border: 1px solid var(--signal); background: var(--signal); color: var(--ink); font-weight: 750; font-size: .84rem; letter-spacing: -.01em; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover, .button:focus-visible { transform: translate(-3px,-3px); box-shadow: 6px 6px 0 var(--coral); }
.button-small { min-height: 38px; padding: 0 16px; font-size: .72rem; }

.hero { min-height: 100vh; background: var(--ink); color: var(--paper); padding: 150px 3.5vw 70px; display: grid; grid-template-columns: .92fr 1.08fr; gap: 6vw; align-items: center; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; width: 50vw; height: 50vw; border: 1px solid rgba(200,245,96,.2); border-radius: 50%; top: -31vw; left: 24vw; box-shadow: 0 0 0 9vw rgba(200,245,96,.025), 0 0 0 18vw rgba(200,245,96,.018); }
.hero-copy { max-width: 700px; position: relative; z-index: 1; }
.eyebrow { font: 500 .68rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: .14em; display: flex; align-items: center; gap: 9px; margin: 0 0 28px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--signal); display: inline-block; box-shadow: 0 0 0 4px rgba(200,245,96,.12); }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(3.6rem, 6.2vw, 7.5rem); line-height: .88; letter-spacing: -.075em; margin-bottom: 34px; font-weight: 650; max-width: 900px; }
h1 em, h2 em, blockquote em { color: var(--signal); font-style: normal; font-weight: 450; }
.hero-deck { max-width: 580px; font-size: clamp(1rem, 1.4vw, 1.3rem); line-height: 1.55; color: rgba(242,240,231,.67); margin-bottom: 38px; }
.hero-actions { display: flex; align-items: center; gap: 26px; }
.text-link { display: inline-flex; gap: 20px; font-size: .8rem; border-bottom: 1px solid rgba(242,240,231,.5); padding-bottom: 5px; }
.hero-proof { margin-top: 70px; display: flex; gap: 0; font: .62rem var(--mono); color: rgba(242,240,231,.55); text-transform: uppercase; letter-spacing: .08em; }
.hero-proof span { padding: 0 15px; border-right: 1px solid var(--line-dark); }
.hero-proof span:first-child { padding-left: 0; }
.hero-proof span:last-child { border: 0; }

.system-window { position: relative; z-index: 2; background: #10221b; border: 1px solid rgba(200,245,96,.36); box-shadow: 22px 22px 0 rgba(200,245,96,.075); min-width: 0; }
.window-bar, .window-footer { display: flex; align-items: center; justify-content: space-between; padding: 12px 15px; font: .58rem var(--mono); letter-spacing: .09em; color: rgba(242,240,231,.55); border-bottom: 1px solid var(--line-dark); }
.window-id, .window-footer > span { display: flex; align-items: center; gap: 8px; }
.live-pulse { width: 7px; height: 7px; background: var(--coral); border-radius: 50%; animation: pulse 1.8s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px rgba(255,113,91,0); } 0%,100% { box-shadow: 0 0 0 0 rgba(255,113,91,.4); } }
.pipeline { display: grid; grid-template-columns: 1fr 24px 1fr 24px 1fr; gap: 5px; padding: 22px 18px; border-bottom: 1px solid var(--line-dark); }
.pipeline-node { border: 1px solid var(--line-dark); background: rgba(255,255,255,.02); color: var(--paper); text-align: left; padding: 13px; min-width: 0; cursor: pointer; transition: border-color .25s, background .25s; }
.pipeline-node:hover, .pipeline-node.is-active { border-color: var(--signal); background: rgba(200,245,96,.07); }
.pipeline-node .node-index { font: .54rem var(--mono); color: var(--signal); display: block; margin-bottom: 19px; }
.pipeline-node strong { display: block; font-size: .78rem; margin-bottom: 5px; }
.pipeline-node small { color: rgba(242,240,231,.43); font: .52rem var(--mono); white-space: nowrap; }
.pipeline-line { position: relative; overflow: hidden; }
.pipeline-line::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; border-top: 1px dotted rgba(242,240,231,.3); }
.pipeline-line i { position: absolute; top: calc(50% - 2px); width: 5px; height: 5px; border-radius: 50%; background: var(--signal); animation: travel 2s linear infinite; }
@keyframes travel { from { left: -5px; } to { left: 100%; } }
.demo-grid { display: grid; grid-template-columns: .9fr 1.1fr; min-height: 300px; }
.source-list { border-right: 1px solid var(--line-dark); padding: 12px; }
.source-item { width: 100%; display: grid; grid-template-columns: 30px 1fr auto; align-items: center; text-align: left; gap: 8px; padding: 13px 9px; color: rgba(242,240,231,.7); background: transparent; border: 0; border-bottom: 1px solid var(--line-dark); cursor: pointer; }
.source-item:hover, .source-item.is-selected { background: rgba(200,245,96,.08); color: var(--paper); }
.source-item.is-selected .source-icon { background: var(--signal); color: var(--ink); }
.source-icon { width: 24px; height: 24px; border: 1px solid currentColor; display: grid; place-items: center; }
.source-item strong, .source-item small { display: block; }
.source-item strong { font-size: .68rem; }
.source-item small { font: .52rem var(--mono); opacity: .45; margin-top: 3px; }
.source-item > i { font: normal .5rem var(--mono); opacity: .45; }
.schema-panel { padding: 18px; min-width: 0; background: #0b1914; }
.panel-label { display: flex; justify-content: space-between; font: .54rem var(--mono); color: rgba(242,240,231,.45); }
.valid { color: var(--signal); }
.valid b { border: 1px solid var(--signal); border-radius: 50%; padding: 0 2px; }
pre { margin: 35px 0 0; white-space: pre-wrap; color: var(--sky); font: .64rem/1.75 var(--mono); overflow: hidden; }
pre .key { color: var(--signal); }
pre .string { color: #ffd6a1; }
pre .bool { color: var(--coral); }
.window-footer { border-top: 1px solid var(--line-dark); border-bottom: 0; }
.window-footer .status-dot { width: 5px; height: 5px; box-shadow: none; }

.marquee { overflow: hidden; background: var(--signal); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); padding: 12px 0; }
.marquee-track { width: max-content; display: flex; align-items: center; gap: 32px; animation: marquee 28s linear infinite; font: 500 .66rem var(--mono); letter-spacing: .12em; }
.marquee-track i { font-size: .4rem; }
@keyframes marquee { to { transform: translateX(-50%); } }

.section { padding: 130px 5vw; }
.section-heading { display: grid; grid-template-columns: 1fr 1.4fr 1fr; align-items: end; gap: 5vw; margin-bottom: 75px; }
.section-heading .eyebrow { align-self: start; }
.section-heading h2, .case-intro h2 { font-size: clamp(2.8rem, 5vw, 5.8rem); line-height: .93; letter-spacing: -.065em; margin: 0; }
.section-heading h2 em, .case-intro h2 em { color: #4e6b5d; }
.section-heading > p:last-child { margin: 0; font-size: 1.02rem; line-height: 1.65; color: #435149; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.capability-card { min-height: 520px; padding: 25px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); position: relative; display: flex; flex-direction: column; transition: background .25s, transform .25s; }
.capability-card:hover { transform: translateY(-8px); }
.card-collect:hover { background: var(--signal); }
.card-structure:hover { background: var(--sky); }
.card-operate:hover { background: #ffb6a9; }
.card-publish:hover { background: #d1c7ff; }
.capability-top { display: flex; justify-content: space-between; font: .62rem var(--mono); margin-bottom: auto; }
.capability-top svg { width: 68px; height: 68px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.capability-card h3 { font-size: 1.75rem; line-height: 1; letter-spacing: -.045em; margin-bottom: 18px; }
.capability-card p { color: #47544d; line-height: 1.5; font-size: .88rem; min-height: 85px; }
.capability-card ul { list-style: none; padding: 18px 0 0; margin: 0; border-top: 1px solid var(--line-light); font: .58rem/2 var(--mono); text-transform: uppercase; letter-spacing: .04em; }

.use-cases { background: var(--ink); color: var(--paper); display: grid; grid-template-columns: .9fr 1.1fr; gap: 8vw; }
.case-intro { position: sticky; top: 140px; align-self: start; }
.case-intro h2 em { color: var(--signal); }
.case-list { border-top: 1px solid var(--line-dark); }
.case-row { border-bottom: 1px solid var(--line-dark); }
.case-row button { width: 100%; background: none; border: 0; color: inherit; display: grid; grid-template-columns: 45px 1fr 30px; gap: 15px; align-items: center; text-align: left; padding: 29px 0; cursor: pointer; }
.case-num { font: .6rem var(--mono); color: var(--signal); }
.case-row h3 { font-size: clamp(1.4rem, 2.4vw, 2.6rem); letter-spacing: -.04em; margin: 0; }
.case-arrow { font-size: 1.2rem; transition: transform .3s; }
.case-row.is-open .case-arrow { transform: rotate(90deg); }
.case-detail { display: grid; grid-template-columns: 1fr auto; gap: 30px; overflow: hidden; max-height: 0; opacity: 0; transition: max-height .45s ease, opacity .3s, padding .45s; padding-left: 60px; }
.case-row.is-open .case-detail { max-height: 260px; opacity: 1; padding-bottom: 35px; }
.case-detail p { color: rgba(242,240,231,.63); line-height: 1.55; max-width: 580px; }
.case-detail span { font: .52rem/1.5 var(--mono); color: var(--signal); text-transform: uppercase; max-width: 125px; }

.about { background: var(--paper); }
.about-label { display: flex; align-items: flex-start; justify-content: space-between; border-bottom: 1px solid var(--ink); }
.about-code { font: .56rem var(--mono); letter-spacing: .08em; }
.about-story { display: grid; grid-template-columns: 1.35fr .65fr; gap: 8vw; padding: 70px 0 100px; }
.about-story h2 { font-size: clamp(3rem, 5.5vw, 6.5rem); line-height: .92; letter-spacing: -.07em; margin: 0; }
.about-story h2 em { color: #4e6b5d; font-style: normal; font-weight: 450; }
.about-body { border-left: 1px solid var(--line-light); padding-left: 3vw; align-self: end; }
.about-body p { color: #3f4d45; font-size: .98rem; line-height: 1.65; }
.about-body p:first-child { color: var(--ink); font-size: 1.22rem; letter-spacing: -.02em; }
.about-manifesto { border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); display: grid; grid-template-columns: repeat(3, 1fr); font: 500 .66rem var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.about-manifesto span { padding: 24px 0; border-right: 1px solid var(--ink); }
.about-manifesto span + span { padding-left: 24px; }
.about-manifesto span:last-child { border: 0; color: #4e6b5d; }

.principles { background: var(--coral); }
.principle-statement { display: grid; grid-template-columns: .65fr 1.35fr; gap: 7vw; margin-bottom: 100px; }
blockquote { margin: 0; font-size: clamp(3rem, 6vw, 7rem); line-height: .92; letter-spacing: -.075em; font-weight: 650; }
blockquote em { color: var(--paper); }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); }
.principle-grid article { padding: 30px 5vw 0 0; border-right: 1px solid var(--line-light); min-height: 260px; }
.principle-grid article + article { padding-left: 3vw; }
.principle-grid article:last-child { border: 0; }
.principle-grid span { font: .6rem var(--mono); }
.principle-grid h3 { font-size: 1.5rem; margin: 70px 0 12px; letter-spacing: -.035em; }
.principle-grid p { max-width: 340px; line-height: 1.55; font-size: .85rem; }

.cta-section { min-height: 760px; background: var(--ink); color: var(--paper); display: grid; place-items: center; position: relative; overflow: hidden; padding: 100px 5vw; text-align: center; }
.cta-copy { position: relative; z-index: 2; max-width: 980px; }
.cta-copy .eyebrow { justify-content: center; }
.cta-copy h2 { font-size: clamp(3.5rem, 7vw, 8rem); line-height: .88; letter-spacing: -.075em; margin-bottom: 30px; }
.cta-copy p { max-width: 600px; margin: 0 auto 35px; color: rgba(242,240,231,.6); line-height: 1.6; }
.contact-brief { max-width: 760px; margin: 0 auto 30px; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line-dark); text-align: left; }
.contact-brief span { padding: 14px; border-right: 1px solid var(--line-dark); color: rgba(242,240,231,.55); font: .52rem/1.5 var(--mono); text-transform: uppercase; }
.contact-brief span:last-child { border-right: 0; }
.button-light { background: var(--paper); border-color: var(--paper); }
.cta-orbit { position: absolute; width: 760px; height: 760px; border: 1px solid rgba(200,245,96,.18); border-radius: 50%; animation: spin 25s linear infinite; }
.cta-orbit::before, .cta-orbit::after { content: ""; position: absolute; border: 1px solid rgba(200,245,96,.1); border-radius: 50%; inset: 12%; }
.cta-orbit::after { inset: 28%; }
.cta-orbit span { position: absolute; width: 12px; height: 12px; background: var(--signal); border-radius: 50%; }
.cta-orbit span:nth-child(1) { top: 11%; left: 20%; }
.cta-orbit span:nth-child(2) { right: -6px; top: 50%; background: var(--coral); }
.cta-orbit span:nth-child(3) { bottom: 8%; left: 35%; background: var(--sky); }
@keyframes spin { to { transform: rotate(360deg); } }

footer { background: var(--paper); padding: 36px 3.5vw; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; border-top: 1px solid var(--ink); font-size: .72rem; }
.footer-brand { font-size: 1.15rem; }
footer > p { text-align: center; margin: 0; color: #657169; }
footer > div { justify-self: end; display: flex; gap: 18px; font: .58rem var(--mono); }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
[data-reveal].is-visible { opacity: 1; transform: none; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 4px; }

@media (max-width: 1050px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 135px; }
  .hero-copy { max-width: 900px; }
  .system-window { max-width: 820px; }
  .section-heading { grid-template-columns: 1fr 2fr; }
  .section-heading > p:last-child { grid-column: 2; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .use-cases { grid-template-columns: 1fr; }
  .case-intro { position: static; max-width: 750px; }
  .about-story { grid-template-columns: 1fr; }
  .about-body { max-width: 660px; margin-left: auto; }
}

@media (max-width: 650px) {
  .site-header { padding: 14px 18px; }
  .button-small { display: none; }
  .brand { font-size: 1.1rem; }
  .hero { padding: 120px 20px 50px; gap: 55px; }
  h1 { font-size: clamp(3.25rem, 16vw, 5rem); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-proof { margin-top: 45px; flex-wrap: wrap; row-gap: 10px; }
  .hero-proof span { font-size: .52rem; }
  .system-window { margin: 0 -10px; box-shadow: 10px 10px 0 rgba(200,245,96,.075); }
  .pipeline { grid-template-columns: 1fr; }
  .pipeline-line { height: 15px; }
  .pipeline-line::before { top: 0; bottom: 0; left: 50%; right: auto; border-top: 0; border-left: 1px dotted rgba(242,240,231,.3); }
  .pipeline-line i { display: none; }
  .pipeline-node { display: grid; grid-template-columns: 30px 1fr; }
  .pipeline-node .node-index { margin: 0; grid-row: span 2; }
  .demo-grid { grid-template-columns: 1fr; }
  .source-list { border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .schema-panel { min-height: 280px; }
  .section { padding: 90px 20px; }
  .section-heading { display: block; }
  .section-heading h2, .case-intro h2 { margin-bottom: 30px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card { min-height: 430px; }
  .case-detail { grid-template-columns: 1fr; padding-left: 45px; }
  .principle-statement { display: block; }
  .about-story { padding: 50px 0 70px; }
  .about-body { border-left: 0; padding-left: 0; }
  .about-manifesto { grid-template-columns: 1fr; }
  .about-manifesto span, .about-manifesto span + span { padding: 17px 0; border-right: 0; border-bottom: 1px solid var(--ink); }
  .about-manifesto span:last-child { border-bottom: 0; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article, .principle-grid article + article { padding: 25px 0; border-right: 0; border-bottom: 1px solid var(--line-light); min-height: 0; }
  .principle-grid h3 { margin-top: 45px; }
  .cta-section { min-height: 680px; padding: 80px 20px; }
  .cta-orbit { width: 120vw; height: 120vw; }
  .contact-brief { grid-template-columns: 1fr; }
  .contact-brief span { border-right: 0; border-bottom: 1px solid var(--line-dark); }
  .contact-brief span:last-child { border-bottom: 0; }
  footer { grid-template-columns: 1fr; gap: 24px; text-align: center; }
  footer .brand, footer > div { justify-self: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}