:root {
  color-scheme: light;
  --page: #f7f9fc;
  --surface: #fff;
  --ink: #172943;
  --muted: #58697e;
  --accent: #235ce5;
  --line: #dce3ed;
  --tint: #e8eefb;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 25px; }
body { margin: 0; color: var(--ink); background: var(--page); font: 15px/1.7 var(--font); }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; object-fit: contain; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
h1, h2, h3 { line-height: 1.2; }
svg { display: block; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 5px; }
::selection { background: var(--accent); color: white; }
.shell { width: min(100%, 1240px); margin-inline: auto; padding-inline: 48px; }
.skip-link { position: fixed; top: -100px; left: 20px; padding: 12px 20px; background: white; z-index: 20; }
.skip-link:focus { top: 12px; }
.site-header { min-height: 100px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 24px; font-weight: 750; letter-spacing: -1px; white-space: nowrap; }
.brand img { width: 33px; height: 33px; }
.brand-light { font-weight: 400; }
.brand-dot { color: var(--accent); }
.main-nav { display: flex; gap: 27px; margin-left: auto; font-size: 13px; }
.main-nav a, .language-link { padding-block: 9px; }
.main-nav a:hover, .main-nav [aria-current="page"], .language-link:hover { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 23px; font-size: 12px; font-weight: 600; }
.language-link { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.language-link > span { font-size: 17px; }
.github-link { padding: 8px 15px; border: 1px solid var(--line); border-radius: 8px; white-space: nowrap; }
.github-link:hover { background: var(--tint); }
.hero { display: grid; grid-template-columns: 1.08fr 1fr; align-items: center; gap: 48px; padding-block: 65px 78px; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 10px; font-weight: 600; letter-spacing: 1.8px; text-transform: uppercase; }
.status-dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 4px #235ce510; flex-shrink: 0; }
.hero h1 { font-size: clamp(46px, 5vw, 65px); font-weight: 750; letter-spacing: -3px; line-height: 1.12; margin: 24px 0; }
.hero h1 span { color: var(--accent); }
.hero-description { max-width: 415px; color: var(--muted); font-size: 16px; line-height: 1.85; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 26px; padding: 12px 21px; min-height: 46px; border-radius: 8px; font-size: 13px; font-weight: 600; transition: transform 160ms, background 160ms; }
.button.primary { background: var(--accent); color: white; box-shadow: 0 6px 16px #235ce51a; }
.button.primary:hover { background: #174cc9; transform: translateY(-2px); }
.button.secondary { border: 1px solid var(--line); }
.hero .button { margin-top: 29px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--accent); font-size: 13px; font-weight: 600; }
.text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.toolkit { min-width: 0; border: 1px solid #dce5f5; border-radius: 23px; padding: 24px; background: radial-gradient(ellipse at center, #ffffff70, transparent 70%), var(--tint); transform: rotate(-2deg); }
.toolkit .eyebrow { font-size: 9px; }
.toolkit-map { position: relative; height: 310px; }
.map-lines { position: absolute; width: 100%; height: 100%; inset: 0; stroke: #b4c7e9; stroke-width: 1; }
.idea-node { position: absolute; left: 49%; top: 44%; transform: translateX(-50%); display: flex; align-items: center; flex-direction: column; gap: 6px; font-size: 10px; color: #526c8f; white-space: nowrap; }
.tool-node { position: absolute; display: flex; align-items: center; gap: 12px; border: 1px solid #fff; border-radius: 14px; padding: 14px; background: #fffffff5; box-shadow: 0 12px 28px #2a4f8510; transition: translate 160ms; }
.tool-node:hover { translate: 0 -4px; }
.tool-node strong, .tool-node small { display: block; }
.tool-node strong { font-size: 12px; font-weight: 650; }
.tool-node small { color: var(--muted); font-size: 9px; margin-top: 2px; }
.tool-node > span:last-child { color: #617c9d; font-size: 12px; align-self: start; }
.app-icon { width: 43px; height: 43px; flex-shrink: 0; }
.node-parallel-agents { top: 26px; left: -3px; transform: rotate(-3deg); }
.node-nexus { right: -10px; top: 121px; transform: rotate(5deg); }
.node-synchub-for-agents { left: 32px; bottom: 0; transform: rotate(2deg); }
.nexus-mark { display: grid; place-items: center; border-radius: 11px; background: #ece5f9; color: #7755a1; font: italic 34px/1 Georgia, serif; }
.collection { padding-top: 34px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 25px; }
.section-heading h2 { font-size: 28px; letter-spacing: -.8px; font-weight: 650; }
.section-count { font-size: 11px; color: var(--muted); }
.product-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 22px; }
.product-card { min-width: 0; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); transition: box-shadow 200ms, border-color 200ms; }
.product-card:hover { border-color: #a9bde2; box-shadow: 0 10px 28px #18386a09; }
.card-main { display: flex; flex-direction: column; height: 100%; border-radius: inherit; }
.card-copy { padding: 28px 29px 24px; }
.card-topline { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.category { color: var(--muted); font-size: 11px; }
.open-source { margin-left: auto; font-size: 10px; color: var(--muted); border: 1px solid var(--line); padding: 1px 8px; border-radius: 20px; white-space: nowrap; }
.card-copy h3 { font-size: 25px; letter-spacing: -.6px; margin-bottom: 10px; font-weight: 650; }
.card-copy > p { font-size: 13px; color: var(--muted); }
.card-cta { display: inline-flex; gap: 15px; align-items: center; font-size: 12px; color: var(--accent); font-weight: 600; margin-top: 21px; }
.card-cta > span { transition: translate 180ms; }
.card-main:hover .card-cta > span { translate: 4px 0; }
.tone-blue { --media: #e8eefb; }
.tone-mint { --media: #e2efeb; }
.tone-lavender { --media: #ede8f6; }
.tone-peach { --media: #faebe6; }
.card-image { margin: auto 12px 12px; padding: 22px 24px 0; height: 220px; overflow: hidden; background: var(--media); border-radius: 10px; }
.card-image img { width: 100%; height: auto; object-fit: cover; object-position: top; border-radius: 6px 6px 0 0; box-shadow: 0 4px 18px #20365820; }
.wide-card { grid-column: 1 / -1; }
.wide-card .card-main { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; }
.wide-card .card-copy { padding: 36px; }
.wide-card .card-image { min-width: 0; height: auto; margin: 16px 16px 16px 0; padding: 24px; overflow: visible; }
.wide-card .card-image img { height: auto; object-fit: contain; border: 1px solid #d8d3e2; border-radius: 7px; box-shadow: 0 12px 26px #38245618; }
.compact-card { grid-column: 1 / -1; background: #f0edf8; border-color: #e2ddef; }
.compact-card .card-main { flex-direction: row; align-items: center; }
.compact-card .card-copy { flex: 1; }
.compact-card .card-topline { margin-bottom: 14px; }
.nexus-art { position: relative; display: grid; place-items: center; width: 36%; align-self: stretch; overflow: hidden; color: #8a6aa7; min-height: 210px; }
.nexus-art::before, .nexus-art::after { content: ""; position: absolute; width: 225px; height: 135px; border: 1px solid #d7cce3; border-radius: 50%; transform: rotate(-30deg); }
.nexus-art::after { width: 180px; height: 155px; transform: rotate(30deg); }
.nexus-art > span { font: italic 130px/1 Georgia, serif; transform: rotate(-8deg); }
.nexus-art .product-emblem { position: relative; z-index: 1; width: 150px; height: 150px; max-width: 85%; object-fit: contain; }
.classics { padding-top: 64px; }
.classics .section-heading h2 { font-size: 24px; }
.classic-list { border-top: 1px solid var(--line); }
.classic-item { display: flex; align-items: center; gap: 20px; padding: 21px 8px; border-bottom: 1px solid var(--line); transition: background 180ms; }
.classic-item:hover { background: var(--tint); }
.classic-item .app-icon { width: 39px; height: 39px; }
.classic-item strong { display: block; font-size: 14px; font-weight: 600; }
.classic-item small { display: block; font-size: 12px; color: var(--muted); margin-top: 3px; }
.classic-item > span:last-child { margin-left: auto; padding-left: 15px; color: var(--muted); }
.profile { display: grid; grid-template-columns: 1fr 1.1fr; align-items: center; gap: 80px; min-height: 65vh; padding-block: 64px 80px; }
.profile-portrait { display: grid; place-items: center; min-height: 400px; padding: 48px; border: 1px solid #dce5f5; border-radius: 24px; background: radial-gradient(circle at 50% 40%, #fff 0, transparent 68%), var(--tint); }
.profile-avatar { width: 259px; height: auto; filter: drop-shadow(0 18px 22px #284c7b18); }
.profile-copy { min-width: 0; }
.profile-copy h1 { margin-top: 18px; font-size: clamp(48px, 5vw, 68px); letter-spacing: -2.5px; }
.profile-role { margin-top: 14px; color: var(--muted); font-size: 20px; }
.profile-contact { margin-block: 34px 28px; border-top: 1px solid var(--line); }
.profile-contact > div { display: grid; grid-template-columns: 70px 1fr; gap: 18px; align-items: baseline; padding-block: 15px; border-bottom: 1px solid var(--line); }
.profile-contact dt { font-size: 12px; color: var(--muted); }
.profile-contact a { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; overflow-wrap: anywhere; }
.profile-contact a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; margin-top: 32px; padding-block: 24px 32px; font-size: 10px; color: var(--muted); }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: 11px; color: var(--muted); padding-block: 28px 14px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb [aria-current] { color: var(--ink); }
.product-hero { display: grid; grid-template-columns: 1fr auto; gap: 60px; padding-block: 33px 48px; align-items: center; }
.product-identity { display: flex; align-items: center; gap: 13px; }
.product-identity .app-icon { width: 52px; height: 52px; }
.product-hero h1 { margin-top: 20px; font-size: clamp(35px, 4vw, 50px); font-weight: 700; letter-spacing: -1.8px; max-width: 760px; overflow-wrap: anywhere; }
.product-tagline { font-size: 20px; margin-top: 16px; color: #35527b; }
.product-description { font-size: 14px; color: var(--muted); line-height: 1.9; max-width: 650px; margin-top: 12px; }
.product-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 27px; }
.download-meta { color: var(--muted); font-size: 12px; }
.product-facts { border-left: 1px solid var(--line); padding-left: 28px; min-width: 175px; }
.product-facts > div + div { margin-top: 18px; }
.product-facts dt { font-size: 11px; color: var(--muted); }
.product-facts dd { font-size: 13px; font-weight: 600; margin-top: 4px; }
.detail-image { background: var(--media, var(--tint)); border: 1px solid var(--line); padding: 35px 55px 20px; border-radius: 18px; }
.detail-image > a { display: block; border-radius: 8px; }
.detail-image img { max-height: 580px; width: auto; height: auto; margin-inline: auto; border-radius: 6px; box-shadow: 0 12px 30px #24375220; }
.detail-image figcaption { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 11px; color: var(--muted); margin-top: 21px; }
.detail-image figcaption a { display: inline-flex; gap: 9px; }
.detail-image figcaption a:hover { color: var(--accent); }
.screenshot-note { color: var(--muted); font-size: 11px; margin-top: 12px; }
.features { padding-block: 56px 45px; }
.features > h2 { font-size: 27px; letter-spacing: -.6px; margin-bottom: 26px; font-weight: 650; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 35px; }
.feature-grid article { position: relative; padding-left: 25px; }
.feature-tick { position: absolute; left: 0; top: -2px; color: var(--accent); }
.feature-grid h3 { font-size: 16px; font-weight: 600; }
.feature-grid p { font-size: 13px; color: var(--muted); margin-top: 10px; }
.getting-started { display: grid; grid-template-columns: 1fr 1.25fr; gap: 50px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 34px 38px; }
.getting-started h2 { font-size: 23px; margin-top: 12px; letter-spacing: -.5px; max-width: 350px; }
.getting-started p:not(.eyebrow) { font-size: 12px; color: var(--muted); margin-top: 14px; max-width: 350px; }
.getting-started .text-link { margin-top: 18px; }
.getting-started ol { padding: 0; margin: 0; list-style: none; counter-reset: steps; display: grid; gap: 18px; }
.getting-started li { position: relative; padding-left: 36px; font-size: 13px; color: var(--muted); counter-increment: steps; }
.getting-started li::before { content: counter(steps); position: absolute; left: 0; top: 1px; display: grid; place-items: center; width: 23px; height: 23px; border-radius: 50%; color: var(--accent); background: var(--tint); font-size: 11px; font-weight: 600; }
.nexus-placeholder { display: grid; justify-items: center; background: #f0edf8; }
.nexus-placeholder .nexus-art { width: 100%; min-height: 230px; }
.nexus-placeholder > p { font-size: 12px; color: #706080; }
.availability-box { margin-block: 36px; padding: 26px; border: 1px solid var(--line); border-radius: 12px; }
.availability-box h2 { font-size: 23px; }
.availability-box p { color: var(--muted); margin-top: 12px; font-size: 14px; }
.related { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-block: 32px; margin-top: 45px; border-block: 1px solid var(--line); }
.next-project { display: flex; gap: 22px; align-items: center; text-align: right; }
.next-project small { display: block; font-size: 10px; color: var(--muted); }
.next-project strong { font-size: 14px; font-weight: 600; }
.next-project:hover { color: var(--accent); }
.not-found { padding-top: 16vh; }
.not-found h1 { font-size: 48px; margin-block: 20px; letter-spacing: -2px; }
html[lang="zh-CN"] .hero h1 { font-size: clamp(42px, 4.6vw, 60px); letter-spacing: -.8px; line-height: 1.32; }
html[lang="zh-CN"] .eyebrow { letter-spacing: 1.5px; }
html[lang="zh-CN"] .product-hero h1 { letter-spacing: -.5px; }

@media (max-width: 1050px) {
  .shell { padding-inline: 30px; }
  .site-header { gap: 25px; }
  .main-nav { gap: 20px; }
  .header-actions { gap: 16px; }
  .hero { gap: 35px; }
  .hero h1 { font-size: 53px; }
  .toolkit { padding: 20px; }
  .tool-node { padding: 12px; gap: 8px; }
  .tool-node .app-icon { width: 36px; height: 36px; }
  .tool-node strong { font-size: 10px; }
  .tool-node small { font-size: 8px; }
  .card-copy { padding-inline: 24px; }
  .card-topline { flex-wrap: wrap; gap: 10px; }
  .card-copy h3 { font-size: 24px; }
  .card-image { padding-inline: 18px; }
  .product-hero { gap: 30px; }
  .product-facts { min-width: 150px; padding-left: 23px; }
  .getting-started { gap: 30px; }
}
@media (max-width: 800px) {
  .wide-card .card-main { grid-template-columns: 1fr; }
  .wide-card .card-copy { padding: 26px; }
  .wide-card .card-image { margin: 0 12px 12px; padding: 18px; }
  .profile { grid-template-columns: 1fr; gap: 32px; padding-block: 30px 40px; max-width: 530px; margin-inline: auto; }
  .profile-portrait { min-height: 270px; padding: 32px; }
  .profile-avatar { width: 210px; }
  .site-header { flex-wrap: wrap; padding-block: 20px; gap: 18px; }
  .header-actions { margin-left: auto; }
  .main-nav { order: 3; width: 100%; margin-left: 0; }
  .hero { padding-top: 37px; grid-template-columns: 1fr; gap: 40px; }
  .hero-copy { max-width: 570px; }
  .hero h1 { font-size: 60px; }
  .hero-description { max-width: 460px; }
  .toolkit { max-width: 530px; width: 100%; justify-self: center; transform: none; }
  .node-parallel-agents { left: 10px; }
  .node-nexus { right: 8px; }
  .node-synchub-for-agents { left: 30px; }
  .tool-node { padding: 14px; gap: 12px; }
  .tool-node strong { font-size: 12px; }
  .tool-node small { font-size: 9px; }
  .product-grid { gap: 18px; }
  .card-copy { padding: 23px 20px; }
  .category { font-size: 10px; }
  .card-topline .app-icon { width: 36px; height: 36px; }
  .open-source { font-size: 9px; }
  .card-copy h3 { font-size: 23px; }
  .card-image { height: 190px; }
  .product-hero { grid-template-columns: 1fr; gap: 28px; }
  .product-facts { display: flex; flex-wrap: wrap; gap: 20px 35px; border-left: 0; padding-left: 0; }
  .product-facts > div + div { margin-top: 0; }
  .detail-image { padding: 25px 30px 18px; }
  .feature-grid { gap: 24px; }
}
@media (max-width: 600px) {
  .shell { padding-inline: 22px; }
  .site-header { gap: 17px 8px; padding-block: 20px; }
  .brand { font-size: 22px; gap: 6px; }
  .brand img { width: 29px; height: 29px; }
  .header-actions { gap: 13px; font-size: 11px; }
  .github-link { border: 0; padding: 8px 0; }
  .github-link > span { display: none; }
  .language-link { gap: 4px; }
  .main-nav { gap: 25px; font-size: 12px; }
  .hero { padding-block: 37px 32px; }
  .hero h1 { font-size: clamp(40px, 11vw, 58px); letter-spacing: -2px; margin-block: 20px; }
  html[lang="zh-CN"] .hero h1 { font-size: clamp(37px, 10vw, 54px); }
  .hero-description { font-size: 14px; max-width: 370px; }
  .hero .button { margin-top: 25px; }
  .toolkit { padding: 20px 16px; border-radius: 19px; }
  .toolkit-map { height: 340px; }
  .toolkit .eyebrow { font-size: 8px; }
  .tool-node { gap: 9px; padding: 12px; }
  .tool-node .app-icon { width: 36px; height: 36px; }
  .tool-node strong { font-size: 11px; }
  .tool-node small { font-size: 8px; }
  .node-parallel-agents { left: 0; top: 23px; }
  .node-nexus { right: 0; top: 112px; }
  .node-synchub-for-agents { left: 10px; bottom: 0; }
  .idea-node { top: 57%; left: 45%; font-size: 9px; }
  .collection { padding-top: 30px; }
  .section-heading { margin-bottom: 20px; }
  .section-heading h2 { font-size: 26px; }
  .section-count { font-size: 10px; }
  .product-grid { grid-template-columns: 1fr; }
  .card-copy { padding: 23px; }
  .card-topline { gap: 10px; margin-bottom: 19px; }
  .card-topline .app-icon { width: 40px; height: 40px; }
  .card-copy h3 { font-size: 25px; }
  .card-copy > p { font-size: 13px; }
  .card-image { height: 225px; padding-inline: 18px; }
  .compact-card { grid-column: auto; }
  .compact-card .card-copy { padding-right: 0; }
  .compact-card .category { display: none; }
  .compact-card .card-copy h3 { font-size: 25px; }
  .nexus-art { width: 30%; min-height: 220px; }
  .nexus-art > span { font-size: 80px; }
  .nexus-art .product-emblem { width: 90px; height: 90px; }
  .nexus-art::before { width: 115px; height: 150px; }
  .nexus-art::after { width: 100px; height: 130px; }
  .classics { padding-top: 42px; }
  .classics .section-heading h2 { font-size: 23px; }
  .classic-item { gap: 14px; padding: 20px 0; }
  .classic-item .app-icon { width: 34px; height: 34px; }
  .classic-item strong { font-size: 12px; line-height: 1.5; }
  .classic-item small { font-size: 11px; }
  .classic-item > span:last-child { padding-left: 0; }
  .site-footer { gap: 16px; font-size: 10px; padding-block: 22px 28px; }
  .site-footer > a { margin-left: auto; }
  .breadcrumb { gap: 7px; font-size: 10px; padding-top: 22px; }
  .product-hero { padding-top: 22px; padding-bottom: 28px; }
  .product-hero h1 { font-size: 36px; letter-spacing: -1.1px; }
  .product-identity .app-icon { width: 45px; height: 45px; }
  .product-tagline { font-size: 18px; line-height: 1.5; }
  .product-description { font-size: 13px; }
  .product-actions { gap: 17px 22px; }
  .product-facts { gap: 15px 25px; }
  .product-facts dt { font-size: 10px; }
  .product-facts dd { font-size: 12px; }
  .detail-image { padding: 17px 13px 14px; border-radius: 12px; }
  .detail-image figcaption { font-size: 10px; margin-top: 15px; }
  .screenshot-note { font-size: 10px; }
  .features { padding-block: 37px; }
  .features > h2 { font-size: 24px; }
  .feature-grid { grid-template-columns: 1fr; gap: 25px; }
  .feature-grid p { margin-top: 7px; }
  .getting-started { grid-template-columns: 1fr; gap: 25px; padding: 24px; }
  .getting-started h2 { font-size: 23px; }
  .getting-started li { font-size: 12px; }
  .related { gap: 20px; margin-top: 30px; }
  .related .text-link { font-size: 11px; gap: 6px; flex-shrink: 0; }
  .next-project { gap: 12px; max-width: 62%; }
  .next-project strong { font-size: 12px; line-height: 1.5; display: block; }
  .next-project small { font-size: 9px; }
  .nexus-placeholder .nexus-art { min-height: 190px; }
}
@media (max-width: 370px) {
  .shell { padding-inline: 18px; }
  .brand { font-size: 20px; gap: 5px; }
  .brand img { width: 26px; }
  .header-actions { gap: 10px; font-size: 10px; }
  .language-link > span { display: none; }
  .tool-node strong { font-size: 10px; }
  .tool-node { gap: 7px; padding: 11px; }
  .tool-node .app-icon { width: 32px; height: 32px; }
  .card-copy { padding-inline: 20px; }
  .category { font-size: 9px; }
  .product-hero h1 { font-size: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}